核壳结构三维有序水凝胶的制备

摘要

Monodisperse core-shell (polystyrene/DAAM-EA-AM) emulsions were prepared by two-step seed polymerization,and crosslinked films were obtained by ambient drying the copolymerization emulsions accompanying a interfacial crosslinking between DAAM/ADDH.The crosslinking degree increased with thermal treatment temperature and time.After alkaline hydrolysis of ester and amide groups resulting carboxylic groups,the films were transformed to be mesostructured hydrogels.The chemical composition and ordered morphologies were experimentally confirmed by FT-IR,SEM and POM.Water uptake of the hydrogels decreased with the thermal treatment time of the films,implying the crosslinking degree also increased.