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Graphitic carbon nitride colloid as one photoinitiator for two-step polymerization.
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Oct2022, Vol. 650, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Graphitic carbon nitride (g-C 3 N 4), as a metal-free semiconductor, has been widely investigated in energy and photoelectric fields. In recent years, its excellent capacity as visible light-driven initiator for photopolymerization has also aroused increasing interests. In this work, g-C 3 N 4 was explored to act as the sole photoinitiator in a two-step polymerization to prepare functional hybrid hydrogel. Firstly, poly(N-isopropylacrylamide) (PNIPAM) hydrogel was facilely obtained by free radical polymerization in the presence of g-C 3 N 4 colloid and visible light. After adsorbing aniline monomer, the oxidative polymerization took place to get polyaniline (PAN) polymer in the network of g-C 3 N 4 /PNIPAM hydrogel, and the original g-C 3 N 4 acted as the oxidative agents in the presence of oxygen. The obtained interpenetrating double network, g-C 3 N 4 /PNIPAM/PAN hydrogel, displayed an excellent photothermal effect irradiated by near-infrared (NIR) laser and good electrical conductivity. This work presents a green method to prepare functional hybrid hydrogel avoiding usage of excessive traditional molecular initiator in radical polymerization. [Display omitted] [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 650
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 158862202
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2022.129615