Tailoring of Nanophase Structure in Epoxy/Epoxidized Poly(styrene)-b-poly(isoprene)-b-poly(styrene) Blend by Tuning of the Molar Ratio of Styrene Block

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2024-03-23 DOI:10.1134/S1560090424600098

C. V. Pious, Poornima Vijayan P., Jesiya Susan George, Nandakumar Kalarikkal, Sabu Thomas

{"title":"Tailoring of Nanophase Structure in Epoxy/Epoxidized Poly(styrene)-b-poly(isoprene)-b-poly(styrene) Blend by Tuning of the Molar Ratio of Styrene Block","authors":"C. V. Pious, Poornima Vijayan P., Jesiya Susan George, Nandakumar Kalarikkal, Sabu Thomas","doi":"10.1134/S1560090424600098","DOIUrl":null,"url":null,"abstract":"In this work, a good degree of epoxidation on poly(styrene)-b-poly(isoprene)-b-poly(styrene) (SIS) block copolymers containing different styrene content (15, 24, and 43%) has been achieved to get epoxidized SIS (eSIS). Thus, obtained eSIS has been blended with epoxy in different compositions. The role of styrene content on eSIS in generating the nanostructure on epoxy matrix has been carefully studied. The morphological findings have also been confirmed by dynamic mechanical analysis. Compared to other blend systems, a composition of 10 wt % eSIS having 24% styrene content is able to form a highly ordered nanostructure in the epoxy network with highest value of glass transition temperature (Tg). As the ratio of PS block in SIS increased, the plasticization effect due to the penetration of ePI block in the blends becomes less, which reflect in their Tg and thermal expansion coefficient (CTE). 10 wt % of eSIS having 43% styrene content largely reduces the CTE of epoxy matrix.","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":"65 6","pages":"803 - 811"},"PeriodicalIF":1.0000,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Science, Series B","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1134/S1560090424600098","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

In this work, a good degree of epoxidation on poly(styrene)-b-poly(isoprene)-b-poly(styrene) (SIS) block copolymers containing different styrene content (15, 24, and 43%) has been achieved to get epoxidized SIS (eSIS). Thus, obtained eSIS has been blended with epoxy in different compositions. The role of styrene content on eSIS in generating the nanostructure on epoxy matrix has been carefully studied. The morphological findings have also been confirmed by dynamic mechanical analysis. Compared to other blend systems, a composition of 10 wt % eSIS having 24% styrene content is able to form a highly ordered nanostructure in the epoxy network with highest value of glass transition temperature (T_g). As the ratio of PS block in SIS increased, the plasticization effect due to the penetration of ePI block in the blends becomes less, which reflect in their T_g and thermal expansion coefficient (CTE). 10 wt % of eSIS having 43% styrene content largely reduces the CTE of epoxy matrix.

Abstract Image

查看原文本刊更多论文

通过调节苯乙烯嵌段的摩尔比调整环氧树脂/环氧化聚（苯乙烯）-b-聚（异戊二烯）-b-聚（苯乙烯）共混物中的纳米相结构

摘要在这项工作中，不同苯乙烯含量（15%、24% 和 43%）的聚（苯乙烯）-b-聚（异戊二烯）-b-聚（苯乙烯）（SIS）嵌段共聚物实现了良好的环氧化，得到了环氧化 SIS（eSIS）。因此，得到的 eSIS 与环氧树脂以不同的成分混合。我们仔细研究了苯乙烯含量对 eSIS 在环氧基质上生成纳米结构的作用。动态机械分析也证实了这些形态学发现。与其他共混体系相比，苯乙烯含量为 24% 的 10 wt % eSIS 能在环氧网络中形成高度有序的纳米结构，并具有最高的玻璃化转变温度 (Tg)。随着 SIS 中 PS 嵌段比例的增加，共混物中 ePI 嵌段的渗透所产生的塑化效果会减弱，这反映在其 Tg 和热膨胀系数（CTE）上。10 wt % 的 eSIS（苯乙烯含量为 43%）在很大程度上降低了环氧基体的 CTE。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Polymer Science, Series B 化学-高分子科学

CiteScore

1.80

自引率

8.30%

发文量

审稿时长

>0 weeks

期刊介绍： Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed