Water-Soluble and Polymerizable Thioxanthone Photoinitiator Containing Imidazole

被引：22
作者：
Qiu, Jun [1 ]
Wei, Jun [1 ]
机构：
[1] Yancheng Inst Technol, Sch Mat Engn, Key Lab Ecol Environm Mat Jiangsu Prov, Dept Polymer Mat & Engn, Yancheng City 224051, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2014年 / 131卷 / 16期
关键词：
photochemistry; photopolymerization; radical polymerization; PHOTOPOLYMERIZATION; MACROPHOTOINITIATORS; PHOTOCHEMISTRY; CYCLODEXTRINS; METHACRYLATE; DERIVATIVES; ACRYLAMIDE; COMPLEXES; KINETICS; CHAIN;
D O I：
10.1002/app.40659
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A novel free radical photoinitiator, 3-allyl-1-[2-hydroxy-3-(thioxanthen-9-one-2-yl)oxypropyl]imidazolium chloride ([AIPTX]Cl), is synthesized by the addition reaction of 2-(2,3-epoxy)propoxylthioxanthone (ETX) with a heterocyclic compound imidazole firstly, and the achieved intermediate 1-[2-hydroxy-3-(thioxanthen-9-one-2-yl)oxypropyl]imidazole (IPTX) is then reacted with allyl chloride. IPTX is chosen to evaluate the photoefficiency of [AIPTX]Cl. FTIR and H-1-NMR confirm the structures of [AIPTX]Cl and IPTX. UV-Vis spectra of the two photoinitiators are similar and both exhibit the maximal absorption about 400 nm. Fluorescence spectra show [AIPTX]Cl/IMZ has slightly higher fluorescence intensity than IPTX system. Photopolymerization studies indicate that [AIPTX]Cl/IMZ is more efficient for the polymerization of water-soluble monomer than IPTX. Moreover, due to its advantages of water solubility and polymerizability, [AIPTX]Cl is an environmental-friendly photoinitiator and has potential for application in UV-curing systems. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40659.
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页数：6
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