Static and Dynamic Mechanical Properties of Cross-Linked Poly (Tripropyleneglycoldiacrylate)/Liquid Crystal Blends

A. Berrayah, U. Maschke
{"title":"Static and Dynamic Mechanical Properties of Cross-Linked Poly (Tripropyleneglycoldiacrylate)/Liquid Crystal Blends","authors":"A. Berrayah, U. Maschke","doi":"10.15866/IREBIC.V1I3.1499","DOIUrl":null,"url":null,"abstract":"This investigation reports on static and dynamic mechanical properties of cross-linked Poly(tripropyleneglycoldiacrylate) (Poly-TPGDA) networks, elaborated via radical polymerization processes induced by Ultraviolet (UV) radiation. The presence of low molecular weight liquid crystal (LC) molecules in the polymer matrix modifies the dynamic and static mechanical behavior of the obtained composite materials. The storage modulus decreases with increasing LC content in the temperature range from T=25°C to -15°C, due to the plasticizing effect induced by the presence of low molecular weight LC in the polymer matrix. In the case of polymer/LC blends with more than 30 weight (wt.)-% LC and for temperatures lower than -15°C, a reinforcement effect could be seen, leading to a change of the shape of the decreasing curves. This phenomenon interferes with the plasticizing effect which himself governs the whole mechanical behavior of the cured polymer/LC system. A sort of competition takes place especially for temperatures lower than -75°C, so that the storage modulus increases or remains constant between 20 and 60 wt.-% LC","PeriodicalId":14377,"journal":{"name":"International Review of Biophysical Chemistry","volume":"45 1","pages":"90-94"},"PeriodicalIF":0.0000,"publicationDate":"2010-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Review of Biophysical Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15866/IREBIC.V1I3.1499","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

This investigation reports on static and dynamic mechanical properties of cross-linked Poly(tripropyleneglycoldiacrylate) (Poly-TPGDA) networks, elaborated via radical polymerization processes induced by Ultraviolet (UV) radiation. The presence of low molecular weight liquid crystal (LC) molecules in the polymer matrix modifies the dynamic and static mechanical behavior of the obtained composite materials. The storage modulus decreases with increasing LC content in the temperature range from T=25°C to -15°C, due to the plasticizing effect induced by the presence of low molecular weight LC in the polymer matrix. In the case of polymer/LC blends with more than 30 weight (wt.)-% LC and for temperatures lower than -15°C, a reinforcement effect could be seen, leading to a change of the shape of the decreasing curves. This phenomenon interferes with the plasticizing effect which himself governs the whole mechanical behavior of the cured polymer/LC system. A sort of competition takes place especially for temperatures lower than -75°C, so that the storage modulus increases or remains constant between 20 and 60 wt.-% LC
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
交联聚(三丙基乙二醇二丙烯酸酯)/液晶共混物的静态和动态力学性能
本研究报告了交联聚(三丙基乙二醇二丙烯酸酯)(聚tpgda)网络的静态和动态力学性能,阐述了自由基聚合过程在紫外线(UV)辐射诱导下。低分子量液晶(LC)分子在聚合物基体中的存在改变了复合材料的动态和静态力学行为。在T=25°C至-15°C的温度范围内,由于低分子量LC在聚合物基体中的存在引起了塑化作用,存储模量随着LC含量的增加而降低。对于重量(wt.)-% LC大于30且温度低于-15℃的聚合物/LC共混物,可以看到增强效应,导致减少曲线的形状发生变化。这种现象干扰了塑化效应,而塑化效应本身决定了固化聚合物/LC体系的整体力学行为。在低于-75°C的温度下,会发生一种竞争,因此存储模量增加或保持在20至60 wt.-% LC之间
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 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Biocoagulants for Water and Waste Water Purification: a Review Optimisation of Poly(γ-Glutamic Acid) Production by Bacillus velezensis NRRL B – 23189 in Liquid Fermentation with Molasses as the Carbon Source without Addition of Glutamic Acid Effects of Transesterification Parameters on the Biodiesel Produced from Crude Groundnut Oil Effect of Filling Kinetic of Sequencing Batch Reactor on the Poultry Wastewater Treatment Technology and Engineering of Biodiesel Production: a Comparative Study between Microalgae and Other Non-Photosynthetic Oleaginous Microbes
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1