Low migration and high performance thioxanthone based photoinitiators

被引：11
作者：
Jin, Jingyu [1 ]
Lu, Guoqiang [1 ]
Nie, Jun [1 ]
Zhu, Xiaoqun [1 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
EUROPEAN POLYMER JOURNAL | 2024年 / 202卷
关键词：
Thioxanthone; Low migration; One component; Molecular weight; ONE-COMPONENT; POLYMERIC PHOTOINITIATOR; VISIBLE PHOTOINITIATORS; COMPRISING BENZOPHENONE; LIGHT; PHOTOPOLYMERIZATION; UV;
D O I：
10.1016/j.eurpolymj.2023.112625
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Photopolymerization technology has been limited in the application of the field of food packaging and biomedicine due to the high migration of the small molecule which are mostly from the photoinitiators. To improve migration stability of photoinitiators, polymerizable 2-vinyl thioxanthone (ETX) was synthesized by thiosalicylic acid and 4-fluorobenzaldehyde. Moreover, to further reduce the migration of photo- or cophotoinitiator, two macromolecular photoinitiators (PPI1, PPI2) were prepared by copolymerization of ETX with dimethylaminoethyl methacrylate (DMAEMA). The initiation activity of the prepared photoinitiators was studied by real-time FTIR spectroscopy. The results indicated ETX/triethanolamine (TEOA) system exhibited higher initiation performance than ITX/TEOA system by irradiation of 405 nm LED lamp, PPI2 as a one component photoinitiator displayed favorable initiation ability. In addition, the migration of ETX, PPI1 and PPI2 in the photocured film was declined obviously. ETX, PPI1 and PPI2 with low migration have potential application in the field of food package and biological materials.
引用
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页数：10
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