Improved Livingness and Control over Branching in RAFT Polymerization of Acrylates: Could Microflow Synthesis Make the Difference?

被引：67
作者：
Derboven, Pieter [1 ]
Van Steenberge, Paul H. M. [1 ]
Vandenbergh, Joke [2 ]
Reyniers, Marie-Francoise [1 ]
Junkers, Thomas [2 ]
D'hooge, Dagmar R. [1 ,3 ]
Marin, Guy B. [1 ]
机构：
[1] Univ Ghent, Chem Technol Lab, B-9052 Zwijnaarde, Ghent, Belgium
[2] Univ Hasselt, Inst Mat Res IMO Imomec, Polymer React Design Grp, B-3590 Diepenbeek, Belgium
[3] Univ Ghent, Dept Text, B-9052 Zwijnaarde, Ghent, Belgium
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2015年 / 36卷 / 24期
关键词：
acrylates; branching; microreactors; polymer kinetics; reversible addition-fragmentation chain transfer; RAFT; N-BUTYL ACRYLATE; FREE-RADICAL POLYMERIZATION; CHAIN TRANSFER; EMULSION POLYMERIZATION; NMR-SPECTROSCOPY; 2-ETHYLHEXYL ACRYLATE; COMPETITIVE PROCESSES; FLOW; MICROREACTOR; POLYMERS;
D O I：
10.1002/marc.201500357
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The superior capabilities of structured microreactors over batch reactors are demonstrated for reversible addition-fragmentation chain transfer (RAFT) solution polymerization of n-butyl acrylate with the aid of simulations, explicitly accounting for the chain length distribution of all macrospecies types. Since perfect isothermicity can be established in a microreactor, less side products due to backbiting and beta-scission are formed compared to the batch operation in which ineffective heat removal leads to an undesirable temperature spike. For a given RAFT chain transfer agent (CTA), additional microstructural control results under microflow conditions by optimizing the reaction temperature, lowering the dilution degree, or decreasing the initial molar ratio of monomer to RAFT CTA.
引用
收藏
页码：2149 / 2155
页数：7
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