Journal of Polymer Engineering最新文献_第9页

Effect of polypyrrole surface modification on antifouling performance of PTFE microfiltration membrane 聚吡咯表面改性对PTFE微滤膜防污性能的影响

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-01-30 DOI: 10.1515/polyeng-2022-0162

Jiazhu Li, Yanqing Liu, Liwei Qu, Xian Cao, Xianning Li

{"title":"Effect of polypyrrole surface modification on antifouling performance of PTFE microfiltration membrane","authors":"Jiazhu Li, Yanqing Liu, Liwei Qu, Xian Cao, Xianning Li","doi":"10.1515/polyeng-2022-0162","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0162","url":null,"abstract":"Abstract In this study, polypyrrole was prepared by in situ chemical oxidation polymerization and deposited on the surface of the PTFE membrane. The surface morphology of the membrane shown that the membrane fouling degree of the modified membrane was much lower than that of the original membrane. Besides, the contact angle value decreased from 107.20° to 72.62°, and its hydrophilicity was significantly enhanced. It took humic acid (HA) as a typical representative membrane foulants, and static and dynamic HA adsorption experiments were carried out on the membranes before and after modification. In the static adsorption experiment of HA, the adsorption capacity of an original membrane was 1.28 times that of a modified membrane. In the dynamic antifouling experiment of HA, the rejection of the modified membrane to HA was 62.99%, while that of the original membrane was only 39.82%. In addition, the experimental results showed that the modified membrane had a higher flux recovery rate, which was 1.18 times that of the original membrane. This study proves that the modified membrane has an extraordinary antifouling effect.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"231 - 242"},"PeriodicalIF":2.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43640249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Integrating stabilizer efficiency of secondary antioxidants to thermal, rheological, optical characterization and filterability study of polypropylene 将二级抗氧剂的稳定效率与聚丙烯的热、流变、光学表征及过滤性能研究相结合

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-01-26 DOI: 10.1515/polyeng-2022-0100

Priyanka Singh, V. P. Singh, Madhu Prajapati, Ashwith Melkar, Ravi Kumar, Saikat Banerjee, Satyajit Samanta

{"title":"Integrating stabilizer efficiency of secondary antioxidants to thermal, rheological, optical characterization and filterability study of polypropylene","authors":"Priyanka Singh, V. P. Singh, Madhu Prajapati, Ashwith Melkar, Ravi Kumar, Saikat Banerjee, Satyajit Samanta","doi":"10.1515/polyeng-2022-0100","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0100","url":null,"abstract":"Abstract The framework of the present study is based on investigation of different types of phosphorus based secondary antioxidants and their role in stabilization of polypropylene. Three different chemical entities i.e., Tris (2,4-di-tert-butylphenyl) phosphite, Tetrakis (2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite and Bis (2,6-di-tert-butyl-4-methylphenyl pentaerythritol-diphosphite) have been studied for its efficiency as a secondary antioxidants or processing stabilizer. Thermal stability of polymer is predicted using degradation kinetics study and correlated with it’s optical, thermal and rheological response. To further evaluate performance of secondary antioxidants, thermogravimetry analysis was performed for polypropylene at three different heating rates and processed for iso-conversional analysis to get the kinetic parameters. Oxidation induction data and kinetic parameters have been related with efficiency of the stabilizers. Filtration study was also carried out to understand the efficacy of stabilizers during secondary process. Die pressure build up in filtration study is quantified and related with performance of secondary antioxidants.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"265 - 276"},"PeriodicalIF":2.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43066256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Icing behavior of supercooled droplets on superhydrophobic polymercoatings between lotus effect and petal effect 荷花效应与花瓣效应之间过冷液滴在超疏水聚合物涂层上的结冰行为

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-01-25 DOI: 10.1515/polyeng-2022-0164

Xiaoru Hao, Jun Xie, Yu Zhang, Wei Sheng, Haikun Zheng

{"title":"Icing behavior of supercooled droplets on superhydrophobic polymercoatings between lotus effect and petal effect","authors":"Xiaoru Hao, Jun Xie, Yu Zhang, Wei Sheng, Haikun Zheng","doi":"10.1515/polyeng-2022-0164","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0164","url":null,"abstract":"Abstract This paper investigated anti-icing behavior and wettability of droplets on superhydrophobic polymercoatings between lotus effect and petal effect, which were prepared on surfaces of 2021 aluminum alloy with 1H, 1H, 2H, 2H-heptafluorodecyl (FAS-17). The prepared surfaces displayed excellent hydrophobicity with contact angles of 154.9° ± 1.5°and 139.8° ± 1.3°, while rolling angles are 4° ± 1.0° (lotus effect) and 30° ± 1.5° (petal effect). Thus, the present study focused on the different characterizations and the anti-icing potential of the superhydrophobic polymersurfaces were analyzed based on three parameters including the icing delay time, the crystallization temperature of water droplets, and contact time of impinging droplets on the cold superhydrophobic polymer coatings (−15 °C). Furthermore, the anti-icing of superhydrophobic coatings between lotus effect and petal effect with freezing time and crystallization temperature experimental phenomena were consistent with the thermodynamic analysis. It is also proved that the droplets have different bounce behavior on different polymercoating surfaces by droplet impact experiment. The study offers a comprehensive perspective on polymercoatings of different wetttablility for anti-icing behavior applications.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"277 - 286"},"PeriodicalIF":2.0,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46115279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and memory properties of a series of novel asymmetric soluble polyimides 一系列新型不对称可溶性聚酰亚胺的合成及其记忆性能

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-01-03 DOI: 10.1515/polyeng-2022-0128

Yang Gao, Fangyuan Chen, Kaitai Hu, Jun‐Yi Nan, Yingzhong Shen

引用次数: 0

Effect of spraying polyvinyl alcohol solution on the surface of liquid film on the structure and antifouling properties of polyvinylidene membrane 液膜表面喷涂聚乙烯醇溶液对聚偏二乙烯膜结构及防污性能的影响

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-28 DOI: 10.1515/polyeng-2022-0198

Lang Xu, Chenyang Wang, Qi Shuai, Hongjun Li, Hongwei Zhang, Danying Zuo

{"title":"Effect of spraying polyvinyl alcohol solution on the surface of liquid film on the structure and antifouling properties of polyvinylidene membrane","authors":"Lang Xu, Chenyang Wang, Qi Shuai, Hongjun Li, Hongwei Zhang, Danying Zuo","doi":"10.1515/polyeng-2022-0198","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0198","url":null,"abstract":"Abstract Polyvinylidene fluoride (PVDF) membrane was prepared by a two-step method of surface gelation-immersion precipitation. The surface of the scraping solution film was sprayed with polyvinyl alcohol (PVA) aqueous solution to gel the film surface first, and then the liquid film was immersed in a coagulation bath for phase transformation to obtain the surface modified PVDF membrane. The effects of PVA solution with different mass fraction on the structure and properties of PVDF membrane were studied. The results showed that with the increase of spraying PVA mass fraction, the contact angle of the upper surface of PVDF membranes gradually decreased, the porosity and mean pore size of PVDF membranes gradually increased, and the crystallinity of PVDF membranes gradually decreased. The pores on upper surface of the membranes first increased and then decreased, and the finger-like macropore structure appeared inside the membranes, the water flux first increased and then decreased, and the rejection rate increased. Dynamic cycle filtration experiment of bovine serum protein (BSA) solution showed an increase in membrane flux recovery from 68.31 to 95.08% and a decrease in the irreversible fouling rate from 31.69 to 4.92%, indicating an improvement in the hydrophilicity and antifouling properties of the modified PVDF membrane.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"254 - 264"},"PeriodicalIF":2.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46011570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural characterization of fillers of inorganic materials in bismaleimide resins 双马来酰亚胺树脂中无机材料填料的结构表征

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-23 DOI: 10.1515/polyeng-2022-0171

R. Dash, P. Kommu, N. Kumari, A. Bhattacharyya

引用次数: 0

Sorption of hazardous industrial organic liquids with environmentally friendly functionalized cellulosic sorbents 用环保功能化纤维素吸附剂吸附危险的工业有机液体

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-20 DOI: 10.1515/polyeng-2022-0168

Seulgi Ji, C. Park, Young Bum Lee, S. Kim, K. An, S. Lee

{"title":"Sorption of hazardous industrial organic liquids with environmentally friendly functionalized cellulosic sorbents","authors":"Seulgi Ji, C. Park, Young Bum Lee, S. Kim, K. An, S. Lee","doi":"10.1515/polyeng-2022-0168","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0168","url":null,"abstract":"Abstract The performances of five cellulosic polymers with different functional groups (cellulose, cellulose acetate, cellulose phosphate, chitosan, and chitin) as sorbents of seven frequently used hazardous polar organic liquids (acrolein, butanone peroxide, epichlorohydrin, formaldehyde, furfuryl alcohol, propylene oxide, and vinyl acetate) are investigated in this study. Amongst the cellulosic sorbents, cellulose phosphate exhibited enhanced sorption properties (as high as 3.09–7.03 g/g) against all seven polar organic liquids investigated, and chitosan and chitin also demonstrated comparable sorption efficiencies (2.28–7.72 g/g and 2.55–5.86 g/g, respectively) to those of cellulose phosphate. According to our investigation, the enhanced sorption efficiency could be achieved due to low powder density of cellulose phosphate, which is caused by the weak intramolecular interaction amongst the polymer chains. In addition, cellulose phosphate, chitosan, and chitin also showed enhanced absorbed solvent recovery percents (71.4, 60.6, and 61.1%, respectively, in average) compared with that of pristine cellulose (43.8%). With excellent sorption efficiency, enhanced solvent recovery rate, and reusability after drying, these functionalized cellulosic sorbents can be excellent candidates to replace the conventional carbon and vermiculites-based sorbents, especially for liquid polar organic spill sorption.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"243 - 253"},"PeriodicalIF":2.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42779072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Artificial intelligence based prediction models for rubber compounds 基于人工智能的橡胶化合物预测模型

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-12 DOI: 10.1515/polyeng-2022-0166

Zeynep Uruk, Alper Kiraz

{"title":"Artificial intelligence based prediction models for rubber compounds","authors":"Zeynep Uruk, Alper Kiraz","doi":"10.1515/polyeng-2022-0166","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0166","url":null,"abstract":"Abstract In the rubber industry, rheometric properties are critical in defining processing times and temperatures. These parameters of rubber compounds are determined by time-consuming and expensive laboratory studies performed in a rheometer. Artificial intelligence approaches, on the other hand, may be used to estimate rheometric properties in seconds without the need for any samples or laboratory experiments. In this research, artificial neural network, Gaussian process regression, and support vector regression techniques are used to predict minimum and maximum torque, 30% and 60% cure time of a rubber compound using both process parameters and raw material composition as input. The dataset comprises 1128 batches of the selected rubber compound. A detailed sensitivity analysis is performed to determine the best performing hyperparameters and the prediction performances are expressed as mean absolute percentage error (MAPE). Minimum, maximum, and average MAPE values are presented for each artificial intelligence technique. Besides this research contributes to fill the gap in rubber industry literature, the results obtained also strongly improve the existing literature results.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"113 - 124"},"PeriodicalIF":2.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42989754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of production process-induced surface topologies at varying roughness depths on the tribological properties of polyamide steel contact 不同粗糙度深度下生产工艺诱导的表面拓扑对聚酰胺钢接触摩擦学性能的影响

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-09 DOI: 10.1515/polyeng-2022-0231

D. Schubert, A. Rohrmoser, C. Herzog, M. Wolf, H. Hagenah, M. Merklein, D. Drummer

{"title":"Influence of production process-induced surface topologies at varying roughness depths on the tribological properties of polyamide steel contact","authors":"D. Schubert, A. Rohrmoser, C. Herzog, M. Wolf, H. Hagenah, M. Merklein, D. Drummer","doi":"10.1515/polyeng-2022-0231","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0231","url":null,"abstract":"Abstract Friction and wear in a tribological system are directly dependent on the surface structure and roughness of the friction partners involved. In this article, a clear interaction between surface topologies and their roughness depth was identified for the material pairing polyamide 66 – steel. The typical correlation between roughness and wear, initially decreasing and increasing after a wear minimizing roughness, was found for all surface topologies, albeit at different levels. The effect of the surface topology is negligible at low roughness (S z < 2.0 µm) with adhesive wear processes determining the wear behaviour. At higher roughness depths (S z > 2.0 µm), the ability of the surface topology to form a stable transfer film determines the tribological behaviour by limiting the effect of abrasive wear processes. A stable transfer film is formed with sufficient roughness and undercuts in the direction of motion, which can be characterised by the average roughness depth, R z , in the direction of motion. Based on these empirical results, an explanatory model for the observed behaviour is presented.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"187 - 197"},"PeriodicalIF":2.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41726775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing component stress during encapsulation of electronics: a simulative examination of thermoplastic foam injection molding 降低电子元件封装过程中的元件应力:热塑性泡沫注塑成型的模拟试验

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2022-12-07 DOI: 10.1515/polyeng-2022-0150

C. Ott, D. Drummer

{"title":"Reducing component stress during encapsulation of electronics: a simulative examination of thermoplastic foam injection molding","authors":"C. Ott, D. Drummer","doi":"10.1515/polyeng-2022-0150","DOIUrl":"https://doi.org/10.1515/polyeng-2022-0150","url":null,"abstract":"Abstract The direct encapsulation of electronic components is an effective way of protecting components against external influences. In addition to achieving a sufficient protective effect, there are two other big challenges for satisfying the increasing demand for encapsulated circuit boards. The encapsulation process should be both suitable for mass production and offer a low component load. Injection molding is a method with good suitability for large series production but also with typically high component stress. In this article, two aims were pursued: first, the development of a calculation model that allows an estimation of the occurring forces based on process variables and material parameters. Second, the evaluation of a new approach for stress reduction by means of thermoplastic foam injection molding. For this purpose, simulation-based process data was generated with the Moldflow simulation tool. Based on this, component stresses were calculated with the calculation model. The suitability of the new approach was clearly demonstrated and a significant reduction in shear forces during overmolding was achieved. It was possible to demonstrate a process development that makes it possible to meet the two main requirements of direct encapsulation in addition to a high protective effect.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":"43 1","pages":"179 - 186"},"PeriodicalIF":2.0,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48110405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0