上海大学学报（英文版）
上海大學學報（英文版）
상해대학학보（영문판）
JOURNAL OF SHANGHAI UNIVERSITY (ENGLISH EDITION)
2005年
5期
466-470
,共5页
裴勇%陈捷%杨黎明%施丽莉%罗浩杰
裴勇%陳捷%楊黎明%施麗莉%囉浩傑
배용%진첩%양려명%시려리%라호걸
hydrogel%lower critical solution temperature (LCST)%poly (N-isopropylacrylamide)%poly (N-isopropylacrylamide-co-acrylamide)%ionic strength%pH sensitive
The thermosensitive poly ( N-isopropylacrylamide ) (PNIPAAm) and poly ( N-isopropylacrylamide-co-acrylamide ) [ poly (NIPAAm-co-AAm) ] hydrogels with different acrylamide molar percentage are prepared by radiation polymerization using Co60 γ-ray.Their swelling equilibrium data in the media of deionized water, NaCl aqueous solutions and different pH buffer solutions are determined. It appears that lower critical solution temperature (LCST) of the hydrogels will drop with the increase of ionic strength and increase with the rising of acrylamide content. A semi-empirical formula is set up with the experimental results. Moreover, it also indicates that this copolymer is pH-sensitive, which is similar to the homopolymer of PNIPAAm.
