Zhang Xiao-Yun, Liu Dong-Ming, Lv Xin-Hu, Sun Miao, Sun Xiao-Li, Wan Wen-Ming
State Key Laboratory of Heavy Oil Processing, Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China.
Institute of Chemical Engineering and Materials, Yantai University, Yantai, 264005, China.
Macromol Rapid Commun. 2016 Nov;37(21):1735-1741. doi: 10.1002/marc.201600422. Epub 2016 Sep 20.
A one-pot method is introduced for the successful synthesis of narrow-distributed (Đ = 1.22) vinyl polymer with both ultrahigh molecular weight (UHMW) (M = 1.31 × 10 g mol ) and micro-/nanomorphology under mild conditions. The method involves the following four stages: homogeneous polymerization, polymerization-induced self-assembly (PISA), PISA and reorganization, and PISA and multiple reorganizations. The key points to the production of UHMW polystyrene are to minimize radical termination by segregating radicals in different nanoreactors and to ensure sufficient chain propagation by promoting further reorganizations of these reactors in situ. This method therefore endows polymeric materials with the outstanding properties of both UHMW and tunable micro-/nanoparticles under mild conditions in one pot.
本文介绍了一种一锅法，可在温和条件下成功合成具有超高分子量（UHMW）（M = 1.31×10 g/mol）和微/纳米形态的窄分布（Đ = 1.22）乙烯基聚合物。该方法包括以下四个阶段：均相聚合、聚合诱导自组装（PISA）、PISA和重组，以及PISA和多次重组。制备超高分子量聚苯乙烯的关键在于通过将自由基隔离在不同的纳米反应器中使自由基终止最小化，并通过促进这些反应器的原位进一步重组来确保足够的链增长。因此，该方法可在温和条件下于一锅法中赋予聚合物材料超高分子量和可调微/纳米颗粒的优异性能。
