Imaging Science and Photochemistry ›› 2019, Vol. 37 ›› Issue (5): 445-455.DOI: 10.7517/issn.1674-0475.190710

• Review and Articles • Previous Articles     Next Articles

Synthesis and Photopolymerization of Benzophenone Macromolecular Photoinitiators

HAO Yajuan1,2, LI Jingfang2, LI Dongbing1, YANG Jinliang1, NIE Jun2   

  1. 1. Changzhou Photosensitive Materials Co., Ltd., Changzhou 213127, Jiangsu, P. R. China;
    2. Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Changzhou 213164, Jiangsu, P. R. China
  • Received:2019-07-12 Online:2019-09-15 Published:2019-09-15

Abstract: Two macromolecular photoinitiators PPI 1 and PPI 2 were synthesized and characterized. The results showed that the UV absorption behavior of PPI 1 and PPI 2 are similar to that of 4-BP, the molar extinction coefficient are higher,the rate of photodegradation are faster. Without the addition of EDAB,compared to PPI 1 and PPI 2, as the molecular weight (functionality) of photoinitiator increased, the polymerization rate increased and the final double bond conversion rate of HDDA increased. The extraction amount of film cured by PPI 1 was 44.5% than that of 4-BP,PPI 2 was 40% than that of 4-BP respectively,after immersed in CH2Cl2 solution for 5 days.

Key words: photopolymerization, photoinitiator, macromolecular