Synthesis of 12,12-Ammonium Ionenes with Functionality for Chain Extension and Cross-Linking via UV Irradiation
✍ Scribed by Sharlene R. Williams; Zsófia Barta; Sean M. Ramirez; Timothy E. Long
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 510 KB
- Volume
- 210
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A novel synthetic methodology for preparing chain‐extended and cross‐linked ionenes using UV irradiation is described. 12,12‐Ammonium ionenes were functionalized with either cinnamate or styrenic functionality at the chain ends and were subsequently exposed to UV irradiation. In addition, a novel copolymer (poly(cinDMPC‐co‐bocDMPC)) was mixed with the cinnamate‐functionalized 12,12‐ammonium ionene to prepare photo‐cross‐linked networks. The UV irradiation process was monitored via UV–Vis spectroscopy after each exposure. The chain‐extended 12,12‐ammonium ionene possessed superior tensile properties compared to the original 12,12‐ammonium ionene. Successful cross‐linking was confirmed with solubility testing of the thin films in methanol. The results indicated that photo‐cross‐linked 12,12‐ammonium ionenes offer potential in membrane technology applications.
magnified image