PHEA-g-PDMAEA well-defined graft copolymers: SET-LRP synthesis, self-catalyzed hydrolysis, and quaternization

2016 ◽  
Vol 7 (45) ◽  
pp. 6973-6979 ◽  
Author(s):  
Fangxu Sun ◽  
Chun Feng ◽  
Haoyu Liu ◽  
Xiaoyu Huang

This article reports the synthesis of well-defined graft copolymers containing a PHEA backbone and degradable PDMAEA side chains, by the combination of RAFT polymerization, SET-LRP, and the grafting-from strategy.

2014 ◽  
Vol 5 (17) ◽  
pp. 4915-4925 ◽  
Author(s):  
Xiuyu Jiang ◽  
Xue Jiang ◽  
Guolin Lu ◽  
Chun Feng ◽  
Xiaoyu Huang

This paper reports the first synthesis of well-defined amphiphilic graft copolymers, consisting of a hydrophilic poly(2-hydroxyethyl acrylate) (PHEA) backbone and hydrophobic polystyrene side chains, by the combination of RAFT polymerization, ATRP, and the grafting-from strategy.


2016 ◽  
Vol 7 (18) ◽  
pp. 3156-3164 ◽  
Author(s):  
Yinan Cui ◽  
Xiuyu Jiang ◽  
Chun Feng ◽  
Guangxin Gu ◽  
Jie Xu ◽  
...  

This article reports the first synthesis of well-defined double hydrophilic graft copolymers with a PHEA backbone, by the combination of RAFT polymerization, SET-LRP, and a grafting-from strategy.


e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Fatima Zohra Sebba ◽  
Seghier Ould Kada ◽  
Mohamed Benaicha ◽  
Nerjesse Nemiche

AbstractIn this study, 2-oxopropylmethacrylate-terminated poly(N-vinyl-2- pyrrolidone) is produced by cationic polymerization using HClO4 as an initiator. Termination (end capping) step is accomplished using 2- hydroxypropylmethacrylate (2HPMA) and the polymer product has different chain lengths of molecular weight averages ranging from 672 to 3049 g/mol. The study also synthesised amphipathic graft copolymers having hydrophobic poly(α- methylstyrene) as a backbone chain and hydrophilic poly(N-vinyl-2-pyrrolidone) (PVP) as side chains of various lengths. The copolymer synthesis was accomplished by free radical copolymerization of ω-oxopropylmethacrylate PVP in the presence of α-methyl styrene initiated with benzoyl peroxide. Measurements of the dynamic viscosity of the polymer solution (20% weight of macromonomers in ethanol) show that the viscosity is proportional to the average molecular weights M̅n . However, a reverse behaviour of the viscosity variation with regard to M̅n is observed for graft copolymer samples. The viscosity variation with respect to the graft copolymer mass must be due to steric effects, which are strongly pronounced in grafted copolymer chains. Appearance of the number of side chains attached to poly(α-methylstyrene) backbone reveals that the grafting reaction has occurred with good efficiency.


1986 ◽  
Vol 31 (7) ◽  
pp. 2303-2314 ◽  
Author(s):  
Takeaki Miyamoto ◽  
Shin-Ichi Takahashi ◽  
Sin-Ichi Tsuji ◽  
Hiraku Ito ◽  
Hiroshi Inagaki ◽  
...  

2018 ◽  
Vol 136 (6) ◽  
pp. 47051 ◽  
Author(s):  
Yongjun Guo ◽  
Rutong Song ◽  
Rusen Feng ◽  
Gang Dai ◽  
Yan Liang ◽  
...  
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