Journal of Elastomers & Plastics最新文献_第3页

Optimized titanium dioxide loading for properties of natural rubber latex and acrylic emulsion blends 针对天然橡胶胶乳和丙烯酸乳液混合物的性能优化二氧化钛添加量

Journal of Elastomers & Plastics Pub Date : 2024-04-10 DOI: 10.1177/00952443241247201

Anuwat Worlee, Nabil Hayeemasae, Abdulhakim Masa

{"title":"Optimized titanium dioxide loading for properties of natural rubber latex and acrylic emulsion blends","authors":"Anuwat Worlee, Nabil Hayeemasae, Abdulhakim Masa","doi":"10.1177/00952443241247201","DOIUrl":"https://doi.org/10.1177/00952443241247201","url":null,"abstract":"Blends of prevulcanized natural rubber (PVNR) and acrylic emulsion (AC) were prepared at the fixed PVNR/AC ratio of 30/70. Effects of titanium dioxide (TiO2) addition were optimized across the contents 0, 10, 20 and 30 parts per hundred parts of polymer (php) with respect to various properties. Morphological analysis revealed a two-phase system in which the PVNR particles were dispersed in the AC matrix. Incorporation of TiO2 induced a finer blend morphology in which a part of the TiO2 was located at the interfaces of blend components. The tensile strength increased with initial TiO2 loading and reached its maximum at 10 php loading, with an improvement by about 127% over the blend without filler. However, further increase in filler loading reduced the tensile strength, and the filler tended to agglomerate at those higher loadings. Thermal stability and storage modulus in rubbery region of the blends containing TiO2 were also improved over the unfilled blend, due to the improved morphology and the hydrogen bonds between TiO2 filler and polymer matrix. TiO2 improved water wettability and adhesion of the blend. The maximum peel strengths on wood and metal substrates were about 120% and 26% larger than for the reference unfilled blend. Such drastic improvements suggest that the filled blends may find applications as coating materials.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ epoxidation of canola oil via peracetic acid mechanism-optimization and kinetic study 过乙酸机制原位环氧化菜籽油--优化和动力学研究

Journal of Elastomers & Plastics Pub Date : 2024-04-03 DOI: 10.1177/00952443241243376

Ahmad Shauqi Abrar Shahrizan, Nurul Hazwani Hanib, Intan Suhada Azmi, Mar’atul Fauziyah, Mohd Jumain Jalil

{"title":"In situ epoxidation of canola oil via peracetic acid mechanism-optimization and kinetic study","authors":"Ahmad Shauqi Abrar Shahrizan, Nurul Hazwani Hanib, Intan Suhada Azmi, Mar’atul Fauziyah, Mohd Jumain Jalil","doi":"10.1177/00952443241243376","DOIUrl":"https://doi.org/10.1177/00952443241243376","url":null,"abstract":"Canola oil can serve as a substitute for polyol in the production of eco-friendly polyurethane. The aim of this study is to investigate the optimal conditions for the epoxidation of canola oil via the Taguchi optimization method. To date, there is no published work on optimization of process parameters for epoxidized canola oil production using the Taguchi method. In this study, the epoxidation of canola oil was performed using in situ-generated peracetic acid. Peracetic acid was formed by the reaction between acetic acid and hydrogen peroxide in the presence of a catalyst. The highest conversion to oxirane of 85% was achieved at a ratio of 2:1 of hydrogen peroxide to canola oil, a temperature of 65°C, and a stirring speed of 400 rpm. The Fourier-transform infrared spectroscopy (FTIR) characterization reveals the presence of the oxirane ring group, identified at a wavenumber of 1150 cm−1. Employing particle swarm numerical simulations, the results exhibit excellent agreement with the experimental data, thereby confirming the accuracy and validity of the kinetic model.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers 估算粘弹性阻尼器用丁腈橡胶的保质期和降解机制

Journal of Elastomers & Plastics Pub Date : 2024-03-27 DOI: 10.1177/00952443241243378

Syam Prasad Ammineni, Dumpala Lingaraju, Cherukuri Nagaraju

{"title":"Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers","authors":"Syam Prasad Ammineni, Dumpala Lingaraju, Cherukuri Nagaraju","doi":"10.1177/00952443241243378","DOIUrl":"https://doi.org/10.1177/00952443241243378","url":null,"abstract":"This study investigates the shelf life of nitrile butadiene rubber (NBR) based on age and temperature factors. Natural aging of nitrile butadiene rubber samples is performed under laboratory conditions for 2 years, followed by thermogravimetric analysis to evaluate Arrhenius parameters. Toop’s equation is used to predict shelf life at 5% conversion rate. Model-free kinetic methods, including Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), and Kissinger, estimate shelf life at different temperatures for both virgin and naturally aged nitrile butadiene rubber. Results show close correlation between KAS and Kissinger methods, with slight variations in activation energy impacting shelf life. Fourier-transform infrared spectroscopy (FTIR) tests assess functional group changes with age. Virgin nitrile butadiene rubber activation energy: OFW-73.33 kJ/mol, KAS-68.43 kJ/mol. Aged nitrile butadiene rubber activation energy: OFW-72.57 kJ/mol, KAS-67.88 kJ/mol. Shelf life at 40°C: Virgin nitrile butadiene rubber - OFW-111.29 years, KAS-26.31 years. Aged nitrile butadiene rubber - OFW-89.01 years, KAS-22.37 years. These findings provide valuable insights for predicting and assessing nitrile butadiene rubber viscoelastic damper performance in engineering applications.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compatibility study of high density polyethylene grade 80 gas pipe with synthetic polyglycol-based brake oil 高密度聚乙烯 80 级燃气管与合成聚乙二醇基制动油的兼容性研究

Journal of Elastomers & Plastics Pub Date : 2024-03-18 DOI: 10.1177/00952443241238451

Latifa Alimi, Kamel Chaoui

{"title":"Compatibility study of high density polyethylene grade 80 gas pipe with synthetic polyglycol-based brake oil","authors":"Latifa Alimi, Kamel Chaoui","doi":"10.1177/00952443241238451","DOIUrl":"https://doi.org/10.1177/00952443241238451","url":null,"abstract":"High Density Polyethylene (HDPE) is one attractive technical option for the transportation and distribution of natural gas and hydrocarbons given the advantages in long-term mechanical strength, lifespan, maintenance costs and resistance to chemical aging. This study investigates the compatibility of extruded pipe material from copolymerized HDPE-80 with DOT 3 brake fluid. Machined standard specimens from inner (IL) and outer (OL) pipe layers are aged in commercial synthetic polyglycol-based oil for 7 days at laboratory conditions. The percent mass changes are +2.2% and +1.9% respectively for IL and OL pipe surfaces. These results are in the same range of published sorption data for other oils and fuels. Stress-strain parameters (E, σ y, σ CD, σ f, ε y, Δ ε CD, ε f) and fracture work are established and thoroughly discussed for both pipe sides. For IL, the reduction of E, σ y and ε f are respectively 28.0%, 13.9% and 22.7%, while for OL they are 22.6%, 7.7% and 25.1%. Globally, it is concluded that strength properties degradation in DOT 3 oil is more important for IL compared to OL. There is an important loss of ductility for both pipe sides. Ageing caused IL crystallinity ( Xc) to increase while OL showed inverse results probably because of frozen anti-oxidants in the outer surface layers following water quenching during extrusion. Before and after ageing, the as-received OL is found to be more resilient to oxidation than corresponding IL, as higher OIT parameters are also shown in the case of crude oil compatibility investigations. DOT 3 brake oil seem to accelerate the degradation of HDPE-80 thermal stability with a higher intensity for IL.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"2014 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140170532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible highly conductive melamine foam/copper sulfide has both electrical heating and pressure sensing properties 柔性高导电性三聚氰胺泡沫/硫化铜具有电加热和压力传感性能

Journal of Elastomers & Plastics Pub Date : 2024-03-16 DOI: 10.1177/00952443241240076

Jiarui Zhao, Wei Pan, Mingli Jiao, Chaohua Su, Jintao Zhang, Yu Qi

引用次数: 0

Ecofriendly quince peel powder incorporated Polylactic acid biocomposite film 加入聚乳酸的生态友好型桲皮粉生物复合膜

Journal of Elastomers & Plastics Pub Date : 2024-03-06 DOI: 10.1177/00952443241238235

İbrahim Şen, Murat Eroğlu, Olcay Severgün, Demet Kızıl

{"title":"Ecofriendly quince peel powder incorporated Polylactic acid biocomposite film","authors":"İbrahim Şen, Murat Eroğlu, Olcay Severgün, Demet Kızıl","doi":"10.1177/00952443241238235","DOIUrl":"https://doi.org/10.1177/00952443241238235","url":null,"abstract":"This study aims to develop sustainable, renewable and biodegradable biocomposite films from environmentally friendly materials. For this purpose, completely biodegradable polymer composites were prepared by mixing polylactic acid (PLA) with a new source, quince peel (QP), by solvent casting method, and their structural, mechanical and thermal properties were examined. The tensile strengths of the composites prepared using QP in proportions varying between 5% (P5Q) and 30% (P30Q) by weight vary between 21.13 ± 0.80 and 12.01 ± 0.10 MPa, and their elongations at break vary between 11.33 ± 0.38 and 4.08 ± 1.06 %. As the QP contribution increased, the tensile strength and breaking elongation of these composites generally decreased, while the elastic modulus also increased. Among these composites, whose elastic modulus varies between 1040.00 ± 140.01 and 811.33 ± 13.31 MPa, it was determined that the elastic modulus (1040.00 ± 140.01 MPa) of the 20% QP added composite (P20Q) was higher than the others. When the thermal analysis of PLA/QP films were examined, it was observed that the glass transition temperatures (Tg) were between 58.54 and 51.45°C and the melting temperatures (Tm) were between 167.71 and 164.28°C, and these temperatures generally decreased with increasing QP doping. When the T50 values, which represent the temperature at which 50% of the composite materials decompose, were examined, it was found that the QP-added ones were higher than the pure composites. While this value was 317.96°C in pure PLA composite, T50 values varied between 327.92 and 340.80°C depending on the varying QP ratios. According to the XRD results performed to evaluate the crystalline properties of PLA composites containing quince bark, the crystallinity of pure PLA was determined as 19.5% and the crystallinity of composites containing 5, 10, 20 and 30 wt % QP additives was determined as 19.3, 18.3, 16.4 and 14.6%, respectively.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140055805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical, thermal and film properties of metal cross-linking fluorinated polyacrylate colloid prepared via semi-continuous seeded emulsion polymerization 通过半连续种子乳液聚合法制备的金属交联含氟聚丙烯酸酯胶体的化学、热和薄膜特性

Journal of Elastomers & Plastics Pub Date : 2024-02-27 DOI: 10.1177/00952443241235377

Lijun Chen, Shusen Cao

引用次数: 0

The impact of chemical treatment and gamma-ray irradiation on the okra hessian cloth reinforced high-density polyethylene composites 化学处理和伽马射线辐照对秋葵麻布增强高密度聚乙烯复合材料的影响

Journal of Elastomers & Plastics Pub Date : 2024-02-26 DOI: 10.1177/00952443241236913

Mohammed Hossan Shahid Shohrawardy, Md Forhad Mina, AKM Moshiul Alam, Ruhul Amin Khan

{"title":"The impact of chemical treatment and gamma-ray irradiation on the okra hessian cloth reinforced high-density polyethylene composites","authors":"Mohammed Hossan Shahid Shohrawardy, Md Forhad Mina, AKM Moshiul Alam, Ruhul Amin Khan","doi":"10.1177/00952443241236913","DOIUrl":"https://doi.org/10.1177/00952443241236913","url":null,"abstract":"Okra hessian cloth-reinforced high-density polyethylene (HDPE) thermoplastic composites were prepared and characterized with both raw and alkali-treated fibers. The fiber contents were optimized for both the raw Okra thermoplastic composites and the alkali-treated Okra thermoplastic composites, and the optimum value of fiber content was 55 wt%. Samples that were alkali-treated and had 55 wt% fibers were subsequently exposed to gamma radiation at doses of 2.5, 5, and 7.5 kGy. Only the sample subjected to 5 kGy showed improved performance. Treated composites exhibited higher crystallinities than the untreated samples as observed by X-Ray diffraction analysis. The rupture surface micrographs of the composites exposed to 5 kGy gamma radiation revealed more compact than others. By using Fourier transform infrared spectroscopy analysis of composites, it was found that 5 kGy dose sample showed enhanced cross-linking between Okra fibers and HDPE matrix. The irradiated composite showed less water intake than the alkali-treated samples. Composites subjected to 5 kGy gamma rays showed improved tensile strength and Young’s modulus of values 66 MPa and 1925 MPa, respectively. Compared to raw and treated composites, the irradiated composites with a radiation dose of 5 kGy showed improved structural, mechanical, and thermal properties.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"137 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139977679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 phthalate-free plasticizer addition on thermal, mechanical, and aging properties of nitrile rubber (NBR) 添加不含邻苯二甲酸盐的增塑剂对丁腈橡胶（NBR）热性能、机械性能和老化性能的影响

Journal of Elastomers & Plastics Pub Date : 2024-02-23 DOI: 10.1177/00952443241236912

Fernanda Menezes, Fabio Roberto Passador, Sandra Aparecida Coelho de Mello

{"title":"Effect of phthalate-free plasticizer addition on thermal, mechanical, and aging properties of nitrile rubber (NBR)","authors":"Fernanda Menezes, Fabio Roberto Passador, Sandra Aparecida Coelho de Mello","doi":"10.1177/00952443241236912","DOIUrl":"https://doi.org/10.1177/00952443241236912","url":null,"abstract":"Nitrile rubber (NBR) is widely used in the automotive, aerospace, and chemical sectors due to its resistance to fuels, oil, thermal aging, and fatigue. A typical NBR compound is prepared with several components that are added to obtain a product to meet specific industry requirements. Plasticizer is one of the main components used in NBR compounds. Typically, phthalates like DBP (dibutyl phthalate) or DOP (dioctyl phthalate) are used for NBR plasticization. However, these phthalates-based plasticizers are associated with toxicity and often prohibited by international regulatory standards. In this way, in the pursuit of a non-toxic NBR compound, the use of phthalate-free plasticizer, namely dioctyl terephthalate (DOTP), has been proposed. In this work, NBR compounds with DOTP, DBP, or DOP were processed in an open mill and vulcanized in hydraulic press. The unvulcanized samples were tested in a moving die rheometer (MDR). Subsequently, thermal, mechanical, and aging analyses were conducted for the vulcanized samples. The lowest torque observed in the rheometric curve, the displacement value of glass transition temperature (Tg), the smaller Shore A hardness, and the high elongation at break indicate that the addition of DOTP results in higher plasticization. The better-aging properties indicate lower migration of the DOTP plasticizer. Thus, the use of DOTP as a plasticizer holds promise as a viable alternative to replace the phthalates-based plasticizer in NBR compounds.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139956004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal, mechanical, electrical properties of poystyrene/poly (styrene-b-isobutylene-b-styrene/carbon nanotube nanocomposites 聚苯乙烯/聚异丁烯-苯乙烯/碳纳米管纳米复合材料的热、机械和电气性能

Journal of Elastomers & Plastics Pub Date : 2024-02-22 DOI: 10.1177/00952443241236915

Sinan Şen, Melek Irmak Cengiz, Emre Tekay

{"title":"Thermal, mechanical, electrical properties of poystyrene/poly (styrene-b-isobutylene-b-styrene/carbon nanotube nanocomposites","authors":"Sinan Şen, Melek Irmak Cengiz, Emre Tekay","doi":"10.1177/00952443241236915","DOIUrl":"https://doi.org/10.1177/00952443241236915","url":null,"abstract":"In this study, high impact polystyrene (HIPS) materials was prepared by using a styrenic elastomer (10, 20, 30 wt%) and carbon nanotube (CNT) (3, 5, 7, 10 phr) by melt blending technique as alternative to commercial HIPS including polybutadiene rubber. The poly (styrene- b-isobutylene- b-styrene) (SIBS) was used as thermoplastic elastomer with polystyrene (PS) to improve its poor impact resistance and CNT was added to PS/SIBS blend matrix to maintain its strength and stiffness. The modulus, tensile strength and toughness values of the blends decreased while those of impact resistance increased in comparison to neat PS. The impact strength of PS20SIBS blend containing 20 wt% SIBS was found to be approximately 530% higher than pure PS. The nanocomposites of the PS20SIBS exhibited a decrease in the size of SIBS particles with increasing CNT compared to PS20SIBS. This was ascribed to the increased viscosity of PS matrix via CNT filler, preventing the coalescence of the elastomer domains. Compared to the PS20SIS, its nanocomposites showed higher strength, modulus and toughness, but lower impact strength. The toughness of the nanocomposite containing 5 phr CNT (PS20SIBS-5CNT), increased by 117% while its creep deformation decreased by approximately 40%, in comparison with PS20SIBS blend. Although PS20SIBS-5CNT exhibited lower impact strength than the PS20SIBS blend due to the dispersion of smaller SIBS particles in the PS matrix, it still increased the impact strength of pure PS by 188%. The PS20SIBS-5CNT nanocomposite, which improved impact strength and creep resistance with optimal toughness and tensile modulus can be used as a novel HIPS material that tunes the hardness-toughness/impact balance effectively. Moreover, the same nanocomposite was found to reach the conductivity threshold by exhibiting 106 times lower electrical resistance in comparison with that containing 3 phr CNT, leading to a conductive filer network with 5 phr loading of the nanotubes into the system.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139955638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0