Pub Date : 2023-01-01DOI: 10.3144/expresspolymlett.2023.54
Arshad Rahman Parathodika, T. K. Sreethu, Purbasha Maji, Markus L. Susoff, K. Naskar
{"title":"Influence of molecular and crosslink network structure on vulcanizate properties of EPDM elastomers","authors":"Arshad Rahman Parathodika, T. K. Sreethu, Purbasha Maji, Markus L. Susoff, K. Naskar","doi":"10.3144/expresspolymlett.2023.54","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2023.54","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69801877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.3144/expresspolymlett.2023.63
A. Krainoi, K. Boonkerd
{"title":"Mechanical/electrical properties and strain sensibility of epoxidized natural rubber nanocomposite filled with carbon nanotube: Effect of sodium alginate as a surfactant on latex technology process","authors":"A. Krainoi, K. Boonkerd","doi":"10.3144/expresspolymlett.2023.63","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2023.63","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69803429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.3144/expresspolymlett.2023.94
Lucas Gomes Rabello, Maira Rievrs Nogueira Alvares, Roberto Carlos da Conceição Ribeiro, Paula Mendes Jardim, Rossana Mara da Silva Moreira Thiré
{"title":"Correlation between solution relative viscosity and the microstructural properties of the poly(3-hydroxybutyrate-co-3-hydroxyvalerate) – PHBV solution blow spun mats","authors":"Lucas Gomes Rabello, Maira Rievrs Nogueira Alvares, Roberto Carlos da Conceição Ribeiro, Paula Mendes Jardim, Rossana Mara da Silva Moreira Thiré","doi":"10.3144/expresspolymlett.2023.94","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2023.94","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136048782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3144/expresspolymlett.2022.14
Mauricio Sánchez-Luna, M. Otmar, L. Kobera, J. Zitka, V. Escobar-Barrios
. The indirect sulfonation, via chloromethylation, of poly(styrene-(ethylene-butylene)-styrene) (polySEBS), under mild conditions, is here reported as an alternative route for the conventional use of chlorosulfonic acid. This indirect sulfonation reaction is an effective route to insert sulfonic groups in the aromatic rings of SEBS to impart a proton exchange capability. The chloromethylated polySEBS was chemically modified by the isothiouronium grouPp, afterward hydrolyzed and oxidized to generate sulfonic acid groups selectively into the aromatic portion (polystyrene) of the polySEBS, to a great extent. The chloromethylated and sulfonated polymeric membranes were characterized by NMR, FT-IR, water uptake, TGA, ion exchange capacity (IEC), and ion conductivity. The obtained results show that as the oxidation time increased in performic acid, the water uptake achieved up to 79.6% due to the conversion of isothiouronium to the sulfonic acid groups into the polymer structure. Furthermore, the sample after 7 hours of oxidation reaction (sSEBS-7H) showed 59% of sulfonation, determined by RMN, and had an IEC value of 1.46 meq/g and also an ion conductivity value of 18.7 mS/cm at RT , which are 46 and 75% higher than those of Nafion 115, a commercial polymer conventionally used for proton exchange membranes (PEM). Thus, the as-prepared sSEBS-7H membrane, via chloromethylation, can be used for PEM since it exhibits good ionic conductivity and structural stability.
{"title":"Indirect sulfonation of telechelic poly(styrene-ethylene-butylene-styrene) via chloromethylation for preparation of sulfonated membranes as proton exchange membranes","authors":"Mauricio Sánchez-Luna, M. Otmar, L. Kobera, J. Zitka, V. Escobar-Barrios","doi":"10.3144/expresspolymlett.2022.14","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2022.14","url":null,"abstract":". The indirect sulfonation, via chloromethylation, of poly(styrene-(ethylene-butylene)-styrene) (polySEBS), under mild conditions, is here reported as an alternative route for the conventional use of chlorosulfonic acid. This indirect sulfonation reaction is an effective route to insert sulfonic groups in the aromatic rings of SEBS to impart a proton exchange capability. The chloromethylated polySEBS was chemically modified by the isothiouronium grouPp, afterward hydrolyzed and oxidized to generate sulfonic acid groups selectively into the aromatic portion (polystyrene) of the polySEBS, to a great extent. The chloromethylated and sulfonated polymeric membranes were characterized by NMR, FT-IR, water uptake, TGA, ion exchange capacity (IEC), and ion conductivity. The obtained results show that as the oxidation time increased in performic acid, the water uptake achieved up to 79.6% due to the conversion of isothiouronium to the sulfonic acid groups into the polymer structure. Furthermore, the sample after 7 hours of oxidation reaction (sSEBS-7H) showed 59% of sulfonation, determined by RMN, and had an IEC value of 1.46 meq/g and also an ion conductivity value of 18.7 mS/cm at RT , which are 46 and 75% higher than those of Nafion 115, a commercial polymer conventionally used for proton exchange membranes (PEM). Thus, the as-prepared sSEBS-7H membrane, via chloromethylation, can be used for PEM since it exhibits good ionic conductivity and structural stability.","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69794024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3144/expresspolymlett.2022.29
A. Antunes, A. Popelka, A. S. Luyt, Abdelrahman Mahmoud, Omar Aljarod, Mohamed Hassan, P. Kasák
{"title":"Impact of corona and radio-frequency plasma treatment on the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)","authors":"A. Antunes, A. Popelka, A. S. Luyt, Abdelrahman Mahmoud, Omar Aljarod, Mohamed Hassan, P. Kasák","doi":"10.3144/expresspolymlett.2022.29","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2022.29","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69794371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3144/expresspolymlett.2022.26
Clément Freymond, A. Guinault, M. Gervais, M. Pluta, T. Makowski, E. Piorkowska, C. Sollogoub
{"title":"Crystallization behavior and morphological features of ethylene-vinyl alcohol 44 copolymer","authors":"Clément Freymond, A. Guinault, M. Gervais, M. Pluta, T. Makowski, E. Piorkowska, C. Sollogoub","doi":"10.3144/expresspolymlett.2022.26","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2022.26","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69794539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3144/expresspolymlett.2022.49
Mengyu Zhou, Jun Liu, Liqun Zhang
{"title":"Multiscale modeling and simulations in elastomer materials: Opportunities and challenges","authors":"Mengyu Zhou, Jun Liu, Liqun Zhang","doi":"10.3144/expresspolymlett.2022.49","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2022.49","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69795884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3144/expresspolymlett.2022.54
Andiswa Kaleni, S. Magagula, M. T. Motloung, M. Mochane, T. Mokhena
{"title":"Preparation and characterization of coal fly ash reinforced polymer composites: An overview","authors":"Andiswa Kaleni, S. Magagula, M. T. Motloung, M. Mochane, T. Mokhena","doi":"10.3144/expresspolymlett.2022.54","DOIUrl":"https://doi.org/10.3144/expresspolymlett.2022.54","url":null,"abstract":"","PeriodicalId":12327,"journal":{"name":"Express Polymer Letters","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69797101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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