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Thermosensitive and photosensitive polymers (PNIPAM-Azo) were synthesized by thiol-ene click reaction with PNIPAM with terminal thiol groups (PNIPAM-SH) and azobenzene compounds containing a double bond. Different catalysts were used in… Click to show full abstract
Thermosensitive and photosensitive polymers (PNIPAM-Azo) were synthesized by thiol-ene click reaction with PNIPAM with terminal thiol groups (PNIPAM-SH) and azobenzene compounds containing a double bond. Different catalysts were used in the reaction to investigate their catalytic effect and a photocatalyst was found to have the best effect. The aggregation behavior of PNIPAM-Azo in aqueous solution was studied, which showed that PNIPAM-Azo had good surface activity in aqueous solution, and could form different aggregates at different concentration. Meanwhile PNIPAM-Azo exhibited good light response and thermal response, only the LCST of PNIPAM-Azo increased a little after long time ultraviolet irradiation.
Journal Title: Journal of Polymer Research
Year Published: 2020
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