Journal of Rubber Research最新文献

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Effect of pottery clay on mechanical and impact absorption properties of natural rubber floor mat 陶土对天然橡胶地垫机械性能和冲击吸收性能的影响
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-29 DOI: 10.1007/s42464-024-00264-4
Laymey Sreng, Phanny Yos, Sirisokha Seang, Azura A. Rashid
{"title":"Effect of pottery clay on mechanical and impact absorption properties of natural rubber floor mat","authors":"Laymey Sreng,&nbsp;Phanny Yos,&nbsp;Sirisokha Seang,&nbsp;Azura A. Rashid","doi":"10.1007/s42464-024-00264-4","DOIUrl":"10.1007/s42464-024-00264-4","url":null,"abstract":"<div><p>Natural rubber (NR) is an invaluable material, in great demand for manufacturing of broad-ranging products. Its performance and properties have been widely studied by incorporating with different ingredients and inorganic fillers including clay minerals to develop many products, one of which is rubber floor mat. Nevertheless, the study on the pottery clay with NR from Cambodia is limited. This study investigated on the mechanical, impact absorption and morphological properties of clay-filled NR at different loadings for floor mat application. It was found that the effect of clay loadings on hardness of rubber composites was insignificant while the value of tensile strength and elongation at break before ageing was reduced to about 10 MPa and 720%, respectively, as clay loadings increased. For tensile properties after ageing, heat resistance property was obtained at clay loading of 20 and 30 phr. The value of tear strength was reduced as clay loading increased by reasons explained through SEM images that revealed agglomeration of clay filler within the rubber matrix accountable for the reduction in mechanical properties. The impact energy absorption showed optimum level at 10 phr of clay loadings at the value of 3.0 Joules. Compared to two types of commercial floor mats, the compounded composites showed superior performance in tensile properties and impact absorption ability.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 2","pages":"215 - 226"},"PeriodicalIF":1.2,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141192203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unravelling fungal diversity in Pestalotiopsis leaf fall disease symptomatic leaves of Hevea brasiliensis in Malaysia 揭示马来西亚巴西红豆杉落叶病症状叶片中真菌的多样性
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-28 DOI: 10.1007/s42464-024-00266-2
Mohamad Zamir Hadi Ismail, Murnita Mohamad Mahyudin, Aizat Shamin Noran, Adam Malik Ahmad Zambri, Nor Afiqah Maiden, Safiah Atan, Rasyidah Mohamad Razar, Mohd Nasaruddin Mohd Aris
{"title":"Unravelling fungal diversity in Pestalotiopsis leaf fall disease symptomatic leaves of Hevea brasiliensis in Malaysia","authors":"Mohamad Zamir Hadi Ismail,&nbsp;Murnita Mohamad Mahyudin,&nbsp;Aizat Shamin Noran,&nbsp;Adam Malik Ahmad Zambri,&nbsp;Nor Afiqah Maiden,&nbsp;Safiah Atan,&nbsp;Rasyidah Mohamad Razar,&nbsp;Mohd Nasaruddin Mohd Aris","doi":"10.1007/s42464-024-00266-2","DOIUrl":"10.1007/s42464-024-00266-2","url":null,"abstract":"<div><p>Pestalotiopsis leaf fall disease (PLFD) has been on the increase in recent years, resulting in diminished latex yield in many rubber producing countries. Thus far, some reports have pointed to the presence of fungal pathogen(s) other than <i>Pestalotiopsis</i> sp. in the diseased leaves. To decipher the diversity of fungal pathogens, a total of 110 early-stage and another 110 late-stage symptomatic leaves were sampled from 12 <i>Hevea</i> clones in seven different areas in Malaysia during wintering and wet seasons at different times of the year. A total of 487 fungal isolates were obtained; 241 were from the early-stage and 246 from the late-stage symptomatic leaves. These isolates were clustered into 11 morphotypes based on colony appearance and microscopic observation of the spore. The diversity analysis revealed significant differences in morphotype richness and evenness when comparing different rubber clones, seasonal effects, and locations by which the fungal isolates were sampled. Five isolates representative of the five predominant morphotypes associated with PLFD were analysed using the Internal Transcribed Spacer (ITS) markers and BLAST analysis. Their closest relative species were identified as <i>Colletotrichum conoides</i>, <i>Neopestalotiopsis surinamensis</i>, <i>Lasiodiplodia theobromae</i>, <i>Phyllosticta fallopiae</i> and <i>Letendraea cordylinicola.</i> This study enhanced our understanding of PLFD, particularly the diversity and distribution of fungal communities associated with the disease across different rubber clones, seasons, and locations in Malaysia. The identification of these fungal isolates associated with PLFD symptoms paves the way for further research into their pathogenicity and the development of targeted management strategies to mitigate the disease.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"501 - 515"},"PeriodicalIF":1.2,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of filler content on non-linear viscoelasticity of high fluorine content fluoroelastomer mixture investigated through large amplitude oscillatory shear tests 通过大振幅振荡剪切试验研究填料含量对高氟含量氟橡胶混合物非线性粘弹性的影响
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-23 DOI: 10.1007/s42464-024-00255-5
Ronghao Song, Rui Yang·, Chen Wang, Zhengtao Su
{"title":"Effects of filler content on non-linear viscoelasticity of high fluorine content fluoroelastomer mixture investigated through large amplitude oscillatory shear tests","authors":"Ronghao Song,&nbsp;Rui Yang·,&nbsp;Chen Wang,&nbsp;Zhengtao Su","doi":"10.1007/s42464-024-00255-5","DOIUrl":"10.1007/s42464-024-00255-5","url":null,"abstract":"<div><p>Non-linear rheological behaviours of high fluorine content fluoroelastomer (HF-FKM) mixtures with varied carbon black (CB) filling amounts were investigated. Non-linear viscoelastic characteristics of HF-FKM mixture are characterised by large amplitude oscillatory shear (LAOS) tests, correlations between rheological behaviour and CB content were then discussed. Each non-linear viscoelastic parameter of HF-FKM mixture presents a three-stage characteristic with increasing CB content, corresponding to ranges of 0–20 phr, 25–30 phr, and 35–45 phr. Three stages of viscoelasticity characteristics for HF-FKM mixtures were considered to depend on the alteration of CB-elastomer network structure with increasing CB content, corresponding to the states where continuous phase of gum, CB-elastomer mesophase and excessive CB agglomerates predominate in mixture compound, respectively. After vulcanisation, samples with 30 phr CB content show the best resilience performance against thermal ageing, contributing to the existence of CB-elastomer mesophase. Samples with 25 phr CB content possess the second lowest compression sets at 225 and 250 °C ageing conditions but perform no better than those with 35 phr at 275 °C. The reason is presumed to be that the presence of excessive CB agglomerates in HF-FKM vulcanisate reduced irreversible deformation of the CB-elastomer network under compression at elevated temperatures.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"399 - 413"},"PeriodicalIF":1.2,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141105578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A critical analysis of soil fertility parameters of rubber plantations with long-term fertilizer use in the western ghats of south India from a global sustainability perspective 从全球可持续性角度对印度南部西高止山长期使用化肥的橡胶种植园土壤肥力参数进行批判性分析
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-22 DOI: 10.1007/s42464-024-00262-6
Jebin Joseph, Joseph George Ray
{"title":"A critical analysis of soil fertility parameters of rubber plantations with long-term fertilizer use in the western ghats of south India from a global sustainability perspective","authors":"Jebin Joseph,&nbsp;Joseph George Ray","doi":"10.1007/s42464-024-00262-6","DOIUrl":"10.1007/s42464-024-00262-6","url":null,"abstract":"<div><p>It is well known that long-term chemicalised agricultural practices harmfully affect soil health and prevent sustainable management of fertility in crop fields, including that of plantation crops. Accordingly, an investigation was carried out to check how soil fertility characteristics such as soil pH, soil mineral nutrient and organic carbon content are altered in long-term chemicalised rubber plantations of Kerala, located in the ecologically sensitive Western Ghats of South India. Soil fertility status concerning soil types in the Rubber fields (USDA soil orders - suborders) such as Inceptisols - Oxic Dystrudepts (IOD), Ultisols - Ustic Haplohumults (UUH), Ultisols - Typic Kandiustults (UTK) and Mollisols - Pachic Argiustolls (MPA) involving six soil series are critically analysed. A negative impact of long-term chemicalised agriculture was visible in low soil pH and nutrient levels. In general, rubber fields in the region, even in the generally alkaline Mollisols, showed a pH of 6.23. The soils showed reduced nutrient and carbon content and a comparatively poor soil fertility index specific to soil types. The soil available NPK and soil total cations were found to be comparatively low and soil specific. However, rubber fields in Mollisols were significantly higher in STK, STMg, STCa, and STNa while those in Ultisols were significantly higher in SAP and SAK than other soil orders. The Inceptisols were significantly higher in SAN, STP, and soil organic carbon than others. Therefore, balanced fertilizer application concerning soil types per proper soil fertility monitoring has become significant to sustainable soil productivity management in rubber plantations.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"459 - 475"},"PeriodicalIF":1.2,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141111160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Linear mixed model approach in the evaluation of temporal stability of rubber yield of rubber tree genotypes under water stress 线性混合模型法评估水分胁迫下橡胶树基因型橡胶产量的时间稳定性
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-22 DOI: 10.1007/s42464-024-00263-5
Lígia Regina Lima Gouvêa, Juliano Quarteroli Silva, Erivaldo José Scaloppi Junior, Marcela Aparecida de Moraes, Mario Luíz Teixeira de Moraes
{"title":"Linear mixed model approach in the evaluation of temporal stability of rubber yield of rubber tree genotypes under water stress","authors":"Lígia Regina Lima Gouvêa,&nbsp;Juliano Quarteroli Silva,&nbsp;Erivaldo José Scaloppi Junior,&nbsp;Marcela Aparecida de Moraes,&nbsp;Mario Luíz Teixeira de Moraes","doi":"10.1007/s42464-024-00263-5","DOIUrl":"10.1007/s42464-024-00263-5","url":null,"abstract":"<div><p>This study aimed to identify stable and productive genotypes of rubber tree [<i>Hevea brasiliensis</i> (Willd. ex. Adr. de Juss. Müell-Arg.)] in water stress using the linear mixed model approach and to compare genetic parameters estimates of different genotypes groups in different years. The experiment was composed of 58 test clones and control clones (RRIM 600, GT 1 and PB 235) distributed across four trials evaluated in the Centro Avançado de Pesquisa e Desenvolvimento de Seringueira e Sistemas Agroflorestais, Votuporanga, São Paulo<i>,</i> Brazil. Rubber yield was evaluated over four years. The crop water stress index (CWSI) was used to evaluate water conditions over the period. The rubber yield data were analysed by the Restricted Maximum Likelihood model and Best Linear Unbiased Prediction (REML/BLUP) procedure. The plant development conditions were inadequate throughout the period. The effect of genotypes was significant in all analyses, indicating conditions favourable to the selection. The superior clones were V 051, V 006, and V 123 (Trial 1); V 227, V 263, and V 288 (Trial 2); V 744, V 619, and V 582 (Trial 3) and C 311, C 344, and C 33 (Trial 4). These genotypes can be used as parental clones in future breeding cycles. There are clones capable of maintaining yield stability in water deficit periods. The annual genetic variability estimated for rubber yield varies from year to year but is maintained during the breeding cycle. This contributes to the maintenance of the genetic variability among productive genotypes.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"477 - 487"},"PeriodicalIF":1.2,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141107646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of phenylurea-based antimicrobial agent in natural rubber latex dipped film as an application for medical gloves 评估天然橡胶乳胶浸渍薄膜中的苯基脲基抗菌剂在医用手套中的应用
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-22 DOI: 10.1007/s42464-024-00261-7
M.Y. Norhanifah, M. Asrul,  M.S. Shabinah Filza, C.A. Ruslimie, A. Nurulhuda
{"title":"Evaluation of phenylurea-based antimicrobial agent in natural rubber latex dipped film as an application for medical gloves","authors":"M.Y. Norhanifah,&nbsp;M. Asrul,&nbsp; M.S. Shabinah Filza,&nbsp;C.A. Ruslimie,&nbsp;A. Nurulhuda","doi":"10.1007/s42464-024-00261-7","DOIUrl":"10.1007/s42464-024-00261-7","url":null,"abstract":"<div><p>This paper describes the effects of incorporating the commercially available phenylurea-based antimicrobial agent S89 to pre-vulcanised natural rubber latex (NRL). The physical properties of the dipped film derived from the S89 incorporated into pre-vulcanised NRL such as antimicrobial efficacy, wettability properties, surface characteristics, surface morphology and tensile strength were further evaluated. The antibacterial activity of S89 in NRL films was tested using the agar disc diffusion method and S89 had been demonstrated to suppress and prevent bacterial growth even at low loading levels. Moreover, the minimum inhibitory concentration (MIC) of S89 was obtained by fitting the inhibition zone diameter and loading of S89 using two mathematical diffusion models, free and dissipative models. In this work, the dissipative model is shown to be the best-described diffusion model for S89. The leaching behaviour of S89 in an artificial sweat was investigated where the leachate of S89 is observed after 20 min of immersion at a very low concentration (0.039 ug/mL). Interestingly, NRL films incorporated with S89 displayed better wettability properties on air facing (AF) surface indicating that the AF surface of the film had been altered to be more hydrophilic. Nonetheless, there were no changes observed to the former facing (FF) surface. In addition, the polarity of the surface was also reduced which corresponds to the contact angle results. Further analysis of the Field Emission Scanning Electron Microscopy (FESEM) surface morphology on the NRL film incorporated with S89 exhibited sufficient miscibility and homogeneity during latex compounding with no agglomeration observed on both surfaces (air and former) and at the cross-sectional surface. Meanwhile, comparative tensile strength (of more than 20Mpa) of NRL films incorporated with S89 was observed for low dosage at 1 phr and 3 phr. In conclusion, antimicrobial natural rubber (NR) films for glove application with satisfactory tensile properties, adequate wettability properties, non-agglomerated surface morphology and good antimicrobial properties were achieved by employing a low loading of S89 in the NRL.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"447 - 458"},"PeriodicalIF":1.2,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141112926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conceptual modeling of determining factors in the assessment of sustainability and resilience of the supply chain: a study of rubber industry suppliers in Iran 供应链可持续性和复原力评估中决定因素的概念模型:对伊朗橡胶业供应商的研究
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-18 DOI: 10.1007/s42464-024-00257-3
Mehdi Ajalli
{"title":"Conceptual modeling of determining factors in the assessment of sustainability and resilience of the supply chain: a study of rubber industry suppliers in Iran","authors":"Mehdi Ajalli","doi":"10.1007/s42464-024-00257-3","DOIUrl":"10.1007/s42464-024-00257-3","url":null,"abstract":"<div><p>Evaluating the suppliers of an industry based on the sustainability and resilience of the supply chain (SC) has become one of the most attractive research topics in the world today. Meanwhile, the rubber industry is of fundamental importance due to the environmental effects and strengthening the resilience of its supply chain against disruptions. The main goal of the upcoming research is to design, extract and calculating of weight the determining factors in the sustainability and resilience of the supply chain and finally to select the best sustainable and resilient suppliers of the rubber industry by simultaneously applying the confirmatory factor analysis (CFA) approach and the decision-making techniques of SWARA (Step-wise Weight Assessment Ratio Analysis) and MOORA (Multi-Objective Optimization on the Basis of Ratio Analysis). For this purpose, in this research, a conceptual and integrated model of the supplier evaluation system based on sustainability and resilience factors has been extracted first by extensively reviewing the literature and research background. Further, in order to investigate the final determining factors in the integrated performance evaluation of suppliers, the confirmatory factor analysis (CFA) approach and the opinions of 40 experts in the rubber industry in Iran were used. The output of this approach showed that all the identified factors have a positive effect on the evaluation of suppliers. Then, by using the SWARA technique and using the opinions of 40 industry experts, the weight of the factors was calculated. The output of this technique showed that the third factor of supply chain sustainability, (S3: Strategy, support and commitment of company managers) with the highest weight is ranked first in terms of importance. Also, the 7th factor of sustainability (S7: Green warehouse) with the least weight in terms of importance in the integrated performance evaluation system of suppliers was placed in the 16th ranks. At the end of the research, 7 rubber industry suppliers were evaluated using the opinions of 40 experts and using MOORA's technique. The final result of this technique showed that the fifth supplier is ranked first, and the fourth supplier is ranked last. In this way, an integrated and comprehensive approach was proposed in order to measure and evaluate the suppliers of the rubber industry in Iran.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 2","pages":"259 - 274"},"PeriodicalIF":1.2,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141064069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Michelia macclurei intercropping on soil properties and microbial population in young rubber plantation 间作米茜草对幼年橡胶园土壤特性和微生物数量的影响
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-17 DOI: 10.1007/s42464-024-00256-4
Dongling Qi, Fang Zhang, Zhixiang Wu, Xiaobo Yang, Guoyu Lan, Chuan Yang
{"title":"Effect of Michelia macclurei intercropping on soil properties and microbial population in young rubber plantation","authors":"Dongling Qi,&nbsp;Fang Zhang,&nbsp;Zhixiang Wu,&nbsp;Xiaobo Yang,&nbsp;Guoyu Lan,&nbsp;Chuan Yang","doi":"10.1007/s42464-024-00256-4","DOIUrl":"10.1007/s42464-024-00256-4","url":null,"abstract":"<div><p>The rubber tree is an economically important tree planted in many tropical countries. While rubber planting has improved the livelihoods of growers, it has also resulted in soil degradation. However, systematic studies on assessment of soil health and its management in rubber plantations are limited. The present study explored whether intercropping of <i>Michelia macclurei</i> (an ornamental evergreen tree) in rubber plantation could help conserve soil health compared to traditional monoculture practice with randomised complete block design. The rubber tree density was the same in monoculture and intercropping, with the addition of <i>Michelia macclurei</i> in intercropping. The effects of soil properties and microbial communities was used to analyse two different planting patterns of rubber monoculture and rubber intercropping using soil sampling from field plots. The study investigated variation in soil physical structure, soil moisture, soil nutrients, soil microbes, and enzyme activities in two types of rubber plantations viz. a monoclonal plantation without intercrop (RM) and a plantation with <i>Michelia macclurei as an intercrop</i> (RAS). The results from above study showed an increase in soil organic carbon (SOC), total nitrogen (TN), ammonium nitrogen (AN), available phosphorus (AP), nitrate nitrogen (NN) and total potassium (TK) in plantation with intercrop as compared to monoclonal plantation without intercrop. When comparing the corresponding values of RM to RAS, bacteria and total microbial abundance of RAS increased on average by 75.51% and 48.42%, respectively. In addition, after the transition from rubber monoculture to rubber agroforestry, the annual average of SOC, TN, AP, TK nutrients and pH in soil increased by 10.94%, 4.25%, 14.53%, 1.34% and 9.74%, respectively. Soil water content, soil bulk density and soil porosity were not significantly different between RM and RAS treatments. Sucrase activity and cellulase activity also increased in the RAS intercropping system. These results show that intercropping promotes soil organic matter and microbial communities and enhances soil enzyme activities. These findings indicate that rubber intercropping creates healthy soil environments conducive to tree growth and improves the ecosystem sustainability of rubber plantations. Healthier and stronger rubber trees may increase rubber production and provide sustainable management of plantations in the future.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"415 - 427"},"PeriodicalIF":1.2,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the effect of rubber powder on concrete properties using various characterization methods 利用各种表征方法分析橡胶粉对混凝土性能的影响
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-17 DOI: 10.1007/s42464-024-00258-2
Te Li, Laire Tier
{"title":"Analysis of the effect of rubber powder on concrete properties using various characterization methods","authors":"Te Li,&nbsp;Laire Tier","doi":"10.1007/s42464-024-00258-2","DOIUrl":"10.1007/s42464-024-00258-2","url":null,"abstract":"<div><p>A large number of waste tires are discarded every year. These waste tires will have a great impact on the environment. If they can be recycled, environmental and economic benefits can be obtained. In this paper, rubber powder is added to concrete, and a variety of analytical methods are used to study the effect of rubber powder on the performance of concrete. Experiments show that the slump of concrete decreases with the increase of rubber powder substitution rate, and the rheological performance results show that the friction force increases with the increase of rubber powder substitution rate. The compressive strength of concrete decreases with the increase of substitution rate. The results of ICP show that rubber powder will adsorb cations to affect cement hydration. Nanoindentation shows that the addition of rubber powder leads to the decrease of high-density hydration products. The results of SEM-EDS show that rubber powder will affect the Si/Ca of hydration products. The results of UPV and MIP are similar. The hydrophobicity of rubber powder and the poor compatibility with hydration products are the key factors affecting the durability of concrete. Because the rubber powder only needs to be ground to avoid the related process of cement, it can obtain good economic and environmental benefits. In practical engineering, rubber powder can be added appropriately.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"429 - 436"},"PeriodicalIF":1.2,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140962238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and development of a system based on transient hot wire technique to determine dry rubber content in natural rubber latex 设计和开发基于瞬态热线技术的系统,以确定天然胶乳中的干胶含量
IF 1.2 4区 化学
Journal of Rubber Research Pub Date : 2024-05-15 DOI: 10.1007/s42464-024-00259-1
Sumit Infent Thomas, Jacob Philip
{"title":"Design and development of a system based on transient hot wire technique to determine dry rubber content in natural rubber latex","authors":"Sumit Infent Thomas,&nbsp;Jacob Philip","doi":"10.1007/s42464-024-00259-1","DOIUrl":"10.1007/s42464-024-00259-1","url":null,"abstract":"<div><p>This paper introduces an innovative methodology for evaluating the dry rubber content (DRC) of natural rubber latex (NRL) through the utilisation of transient hot wire (THW) technique. To accomplish this objective, an instrumentation system has been devised and implemented, which operates based on this underlying principle. The proposed approach capitalizes on the significant disparity in thermal conductivity between rubber particles (0.13 W/m-K) and water (0.58 W/m-K). A series of NRL samples obtained from the field were assessed using the developed instrument and their corresponding DRC values determined using conventional weighing-drying technique. The outcomes reveal a strong correlation between measured temperature increments for each sample within a predefined time frame and their respective DRC values. Furthermore, the proposed method offers the advantage of a significantly reduced measurement time, requiring only approximately 10 min to determine the DRC, in contrast to the existing weighing-drying technique, which necessitates around 18 h. Both techniques yield a measurement accuracy of ± 2%.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"27 3","pages":"437 - 445"},"PeriodicalIF":1.2,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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