The positive effect of water on photo-induced step transfer-addition & radical-termination (START) polymerization. Issue 29 (24th March 2017)

• Record Type: Journal Article
• Authors: Xu, Tianchi; Zhang, Lifen; Cheng, Zhenping; Zhu, Xiulin
• Is Part Of: RSC advances. Volume 7:Issue 29(2017)
• Page Start: 17988
• Page End: 17996
• Publication Date: 2017-03-24
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra01925d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In photo-induced Step Transfer-Addition & Radical-Termination (START) polymerization, the addition of water greatly enhanced the overall polymerization efficiency and inhibited the function loss (C–I). Abstract : Step-growth radical copolymerization between α, ω-diiodoperfluoroalkanes (A ) and α, ω-unconjugated dienes (B ) proceeds efficiently through a photo-induced Step Transfer-Addition & Radical-Termination (START) strategy in aqueous/organic biphasic system. The addition of water in our polymerization strategy enhanced the overall polymerization efficiency and inhibited the function loss (C–I) significantly, which has been illustrated through UV-vis tests. Therefore, most of the functional groups (C–I) in the polymer chain end have been preserved in the final polymer product (AB ) n based on 19 F NMR analysis. After polymerization, we could erase the iodine atoms in the main chain of (AB ) n, which generates semifluorinated polyolefins with enhanced thermal stability.