Long Wavelength Cationic Photopolymerization in Aerated Media: A Remarkable Titanocene/Tris(trimethylsilyl)silane/Onium Salt Photoinitiating System.

被引：49
作者：
Tehfe, M. A. [1 ]
Lalevee, J. [1 ]
Allonas, X. [1 ]
Fouassier, J. P. [1 ]
机构：
[1] Univ Haute Alsace, Ecole Natl Super Chim Mulhouse, CNRS, Dept Photochem, F-68093 Mulhouse, France
来源：
MACROMOLECULES | 2009年 / 42卷 / 22期
关键词：
VISIBLE-LIGHT; TRIARYLSULFONIUM SALTS; FREE-RADICALS; POLYMERIZATION; REACTIVITY; DIARYLIODONIUM; EPOXIDES; ABILITY;
D O I：
10.1021/ma9016696
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 new system for visible light induced polymerization of cationic resins working through it free radical promoted process under air is presented, This system is based on a fluorinated titanocene free radical initiator bis(cyclopentadienyl)bis[2,6-difluoro-3-(1-pyrryl)phenyl]titanium Ti, a silane (tris(trimethyl-Isilyl)silane TTMSS) together with ail onium salt (diphenyliodonium hexafluorophosphate). The polymerization process is highly efficient, and better under aerated than under laminated conditions; it appears as a suitable system for long wavelength cationic photopolymerization under air. This system could also be efficient for the polymerization under sunlight irradiation. The involved mechanisms investigated by laser flash photolysis and ESR spin trapping experiments are detailed.
引用
收藏
页码：8669 / 8674
页数：6
相关论文
共 45 条
[1]  
Alfassi Z., 1997, PEROXYL RADICALS
[2]  
[Anonymous], 1995, PHOTOINITIATION PHOT
[3]  
ARSU N, 1995, MACROMOL REP, P1257
[4]  
AYDOGAN B, 2006, PHOTOCHEMISTRY UV CU, P187
[5]  
BAUMANN H, 1984, Z CHEM, V24, P18
[6]   A VISIBLE-LIGHT INITIATING SYSTEM FOR FREE-RADICAL PROMOTED CATIONIC POLYMERIZATION [J].
BI, YB ;
NECKERS, DC .
MACROMOLECULES, 1994, 27 (14) :3683-3693
[7]  
Castellanos F, 1996, J APPL POLYM SCI, V60, P705, DOI 10.1002/(SICI)1097-4628(19960502)60:5<705::AID-APP7>3.0.CO
[8]  
2-U
[9]  
Chatgilialoglu C., 2004, ORGANOSILANES RADICA
[10]   Electron Spin Resonance Spin Trapping Technique: Application to the Cleavage Process of Photoinitiators [J].
Criqui, Adrien ;
Lalevee, Jacques ;
Allonas, Xavier ;
Fouassier, Jean-Pierre .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 2008, 209 (21) :2223-2231
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