Synthesis and Redispersibility of Poly(styrene-block-n-butyl acrylate) Core–Shell Latexes by Emulsion Polymerization with RAFT Agent–Surfactant Design

2015 ◽  
Vol 48 (5) ◽  
pp. 1313-1319 ◽  
Author(s):  
Feizhou Wang ◽  
Yingwu Luo ◽  
Bo-Geng Li ◽  
Shiping Zhu
Keyword(s):  
Emulsion Polymerization ◽  
Butyl Acrylate ◽  
Core Shell ◽  
Raft Agent

Toughening of an epoxy thermoset with poly[styrene-alt-(maleic acid)]-block-polystyrene-block-poly(n-butyl acrylate) reactive core–shell particles

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35621-35627 ◽  
Author(s):  
Ren He ◽  
Xiaoli Zhan ◽  
Qinghua Zhang ◽  
Fengqiu Chen
Keyword(s):  
Emulsion Polymerization ◽  
Maleic Acid ◽  
Butyl Acrylate ◽  
Chain Transfer ◽  
Core Shell ◽  
Reversible Addition ◽  
Raft Agent ◽  
Shell Particles

Reactive core–shell particles for epoxy toughening were synthesized via reversible addition–fragmentation chain transfer emulsion polymerization mediated by an amphiphilic macro-RAFT agent followed by core-crosslinking to increase stability.

Preparation of Self-Crosslinking Core-Shell Latex at Ambient Temperature

2010 ◽  
Vol 174 ◽  
pp. 466-469
Author(s):  
Tang Wei Wang ◽  
Song Ya Zhang ◽  
Zhong Xiao Li ◽  
Jia Ling Pu
Keyword(s):  
Butyl Acrylate ◽  
Chain Transfer ◽  
Average Diameter ◽  
Degree Of Polymerization ◽  
Latex Film ◽  
Cross Linking ◽  
Core Shell ◽  
Reversible Addition ◽  
Raft Agent ◽  
Calculated Average

A reversible addition fragmentation chain transfer (RAFT) agent, 2- (dodecylthiocarbonothioylthio)propanoic acid (RAFT-1), was synthesized and characterized. Equimolar doses of acrylic acid (AA) and n-butyl acrylate were successively polymerized in the presence of RAFT-1 to give an amphiphilic macro RAFT agent (RAFT-2), which had a calculated average degree of polymerization of ten. Core-shell poly (butyl acrylate-co-diacetoneacrylamide) latex was prepared by using RAFT-2 as a reactive surfactant. The latex was narrowly distributed and very stable, which had a solid concentration as high as 45 wt.% and an average diameter of about 50 nm, Latex films were prepared with the core-shell emulsion and small amount of cross-linking agent, adipic dihydrazide. Results showed that cross-linking reaction occurred with the evaporation of water. The resulting cross-linked latex film was tough and transparent.

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