ATRP of N‐Hydroxyethyl Acrylamide in the Presence of Lewis Acids: Control of Tacticity, Molecular Weight, and Architecture,Macromolecular Rapid Communications

当前位置： X-MOL 学术 › Macromol. Rapid Commun. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

ATRP of N‐Hydroxyethyl Acrylamide in the Presence of Lewis Acids: Control of Tacticity, Molecular Weight, and Architecture
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2019-01-16 , DOI: 10.1002/marc.201800877
Yue Sun _{1,

2} , Liye Fu ₂ , Mateusz Olszewski ₂ , Krzysztof Matyjaszewski ₂

Affiliation

Good control of tacticity, molecular weight, and architecture is attained via atom transfer radical polymerization (ATRP) of N‐hydroxyethyl acrylamide (HEAA), in a one‐pot process in the presence of Y(OTf)₃. The effect of temperature, ratio of [Y(OTf)₃]/[HEAA], and ATRP procedure on the tacticity and degree of control over the polymerization is investigated in detail. Under optimal conditions, using photo ATRP and 15% Y(OTf)_3, the content of meso dyads (m) can be increased from 42% to 80% in a homopolymer with a dispersity D = 1.22. Well‐defined stereoblock copolymers, atactic‐ b ‐isotactic poly(HEAA), with D = 1.27, are obtained by adding Y(OTf)₃ at a specific conversion, initially started without Y(OTf)₃.

中文翻译：

路易斯酸存在下的N-羟乙基丙烯酰胺的ATRP：规整度，分子量和结构的控制

在Y（OTf）₃存在的情况下，通过一锅法通过N-羟乙基丙烯酰胺（HEAA）的原子转移自由基聚合（ATRP），可以很好地控制立构规整度，分子量和结构。详细研究了温度，[Y（OTf）₃ ] / [HEAA]的比例以及ATRP程序对聚合反应的立构规整度和控制程度的影响。在最佳条件下，使用光ATRP和15％Y（OTf）_3，在分散度D = 1.22的均聚物中，内消旋二元组（m）的含量可以从42％增加到80％。定义明确的立体嵌段共聚物，无规B等规聚（HEAA），带有D 通过以特定的转换添加Y（OTf）₃来获得= 1.27，该转换最初是在没有Y（OTf）_3的情况下开始的。

更新日期：2019-01-16

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南