Synthesis of amphiphilic polycyclooctene-graft-poly(ethylene glycol) copolymers by ring-opening metathesis polymerization

被引：14
|
作者：
Shi, Hengchong [2 ,3 ]
Shi, Dean [1 ]
Yin, Ligang [2 ]
Luan, Shifang [2 ]
Zhao, Jie [2 ,3 ]
Yin, Jinghua [2 ]
机构：
[1] Hubei Univ, Fac Mat Sci & Engn, Minist Educ Key Lab Green Preparat & Applicat, Wuhan 430062, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2010年 / 70卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Poly(ethylene glycol); ROMP; Blocked isocyanate; Polyolefin; Amphiphilic; POLY(ETHYLENE GLYCOL); BIOCOMPATIBILITY; POLYMERS; BLEND;
D O I：
10.1016/j.reactfunctpolym.2010.04.008
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this paper, a novel monomer of 4-methyl-3-(carbamate)-carbanilic acid-4-cyclooctene ester (MCCCE) was synthesized and characterized by FTIR, NMR and ESI-MS. Polycyclooctene-graft-blocked isocyanate copolymers were prepared by the copolymerization of MCCCE and cyclooctene via ring-opening metathesis polymerization (ROMP). Amphiphilic polycyclooctene-graft-PEG copolymers were prepared by melt mixing the polycyclooctene-graft-blocked isocyanate copolymers with poly(ethylene glycol) (PEG) at 200 degrees C. The blocked isocyanate group on MCCCE can be dissociated to produce free isocyanate group, which will react with the end hydroxyl groups on PEG molecules. The effects of monomer-to-catalyst, monomer-to-chain transfer agent ratios on molecular weight of the copolymer were detailedly studied. The water contact angle of polycyclooctene-graft-PEG copolymer is much smaller than that of polycyclooctene. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：449 / 455
页数：7
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