Synthesis and characterization of UV-curable castor oil-based polyfunctional polyurethane acrylate via photo-click chemistry and isocyanate polyurethane reaction

被引：65

作者：

Chen, Guangxue ^{[1
]}

Guan, Xiaoyuan ^{[1
]}

Xu, Ruixin ^{[2
]}

Tian, Junfei ^{[1
]}

He, Minghui ^{[1
,4
]}

Shen, Wei ^{[4
]}

Yang, Jianwen ^{[3
]}

机构：

[1] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Shenzhen Polytech, Sch Media & Commun, Shenzhen 518055, Peoples R China

[3] Sun Yat Sen Univ, Sch Chem & Chem Engn, Inst Polymer Sci, DSAPM Lab, Guangzhou 510275, Guangdong, Peoples R China

[4] Monash Univ, Dept Chem Engn, Australian Pulp & Paper Inst, Clayton Campus, Vic 3800, Australia

来源：

PROGRESS IN ORGANIC COATINGS | 2016年 / 93卷

基金：

中国国家自然科学基金;

关键词：

Castor oil; Thiol-ene click reaction; Polyurethane acrylate; UV-curable; DIELS-ALDER REACTION; VEGETABLE-OILS; RESINS;

D O I：

10.1016/j.porgcoat.2015.12.015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this paper, UV-curable castor oil-based polyfunctional polyurethane acrylate (COME-PUA) was synthesized via photo-click chemistry and isocyanate polyurethane reaction. Facile and highly efficient side-chain functionalization of castor oil (CO) was first achieved via thiol-ene photo-click chemistry with beta-mercaptoethanol (ME). H-1 NMR result indicated that almost 100% conversion of double-bond in CO was observed within 10 min, and the average hydroxyl functionality of the obtained polyol COME was about 6. Next, COME was modified by isocyanate polyurethane reaction with hydroxypropyl acrylate (HPA), isophorone diisocyanate (IPDI) and PEG-200 as the chain extender in order to prepare the resin COME-PUA. Results of both H-1 NMR and FTIR revealed that the targeted COME and COME-PUA were successfully synthesized. Furthermore, UV-curing kinetic of COME-PUA was revealed by real-time FTIR, showing a higher UV-curing rate than the common CO-PUA. Finally, some physical properties of curing films were studied. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：11 / 16

页数：6

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