Enhancing covalent mechanochemistry in bulk polymers using electrospun ABA triblock copolymers

被引：21
作者：
Ramirez, A. L. Black [1 ]
Schmitt, A. K. [2 ]
Mahanthappa, M. K. [2 ]
Craig, S. L. [1 ]
机构：
[1] Duke Univ, Dept Chem, Durham, NC 27708 USA
[2] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
来源：
FARADAY DISCUSSIONS | 2014年 / 170卷
关键词：
FORCE; MECHANOPHORES; ACTIVATION; REACTIVITY; EXTENSION; BACKBONE; BONDS;
D O I：
10.1039/c4fd00001c
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The mechanochemical activation of covalent bonds in bulk polymers is often characterized by low conversions. Here we report that the activation of gem-dibromocyclopropane (gDBC) mechanophores embedded in a poly(1,4-butadiene) (PB) is enhanced when a central gDBC-PB block is flanked by two polystyrene (PS) end blocks in an ABA-type triblock architecture. Electrospinning the PS-(gDBC) PB-PS leads to even greater activation in aligned fiber mats under tension.
引用
收藏
页码：337 / 344
页数：8
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