Swelling behaviors of thermoresponsive hydrogels cross-linked with acryloyloxyethylaminopolysuccinimide |
| |
Authors: | Yue-qin Yu Yang Xu Hansheng Ning Shu-sheng Zhang |
| |
Institution: | (1) Key laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People’s Republic of China |
| |
Abstract: | Based on a biodegradable cross-linker, acryloyloxyethylaminopolysuccinimide (AEA-PSI), a series of looser cross-linked poly(N-isopropylacrylamide-co-acrylic acid) P(NIPAAm-co-AAc)] hydrogels were prepared, and their water content, swelling/deswelling
kinetics, and the morphology of the gels were investigated. The swelling behaviors of AEA-PSI-cross-linked P(NIPAAm/AAc) hydrogels
were investigated in Dulbecco’s phosphate-buffered saline (pH = 7.4), in the distilled water, and in the simulated gastric
fluids (pH = 1.2), respectively. The water contents of the hydrogels were controlled by the monomer molar ratio of NIPAAm/AAc,
swelling media, and the temperature. In the swelling kinetics, all the dried hydrogels exhibited fast swelling behavior, and
the swelling ratios were influenced significantly by the amounts of AEA-PSI and AAc content. The deswelling kinetics of the
hydrogel were independent of the content of AAc and cross-linker. Lastly, the morphology of the hydrogels was estimated by
the field scan electron microscopy. |
| |
Keywords: | Thermoresponsive hydrogel Water content Swelling kinetics Deswelling kinetics Morphology |
本文献已被 SpringerLink 等数据库收录! |
|