Radiation synthesis and characterization of polyacrylic acid hydrogels |
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| Authors: | YANG Mingcheng SONG Hongyan ZHU Chengshen HE Suqin |
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| Affiliation: | 1. Department of Control and Instrumentation Engineering, Korea University, Jochiwon, 339-700, Korea;2. Department of Electrical and Electronic Engineering, Kangwon National University, Chuncheon 200-701, Korea |
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| Abstract: | The pH-sensitive polyacrylic acid (PAA) hydrogels were synthesized by gamma-ray irradiation at an ambient temperature. The influences of dose, monomer concentration, cross-linking agent content, pH, and ionic strength on the swelling ratio (SR) of the PAA hydrogels were investigated in detail. The results show that the SR of the hydrogel decreases with an increase in the dose, monomer concentration, and cross-linking agent content. In alkaline solution, the SR of the hydrogels is much higher than that in acid solution. Also, the ionic strength can influence the SR of the hydrogels. The more the concentration, the lower the SR. |
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| Keywords: | pH-sensitive behavior Polyacrylic acid hydrogels Radiation synthesis hydrogels polyacrylic acid characterization synthesis lower influences acid solution alkaline solution results show decreases increase ionic strength swelling concentration agent content monomer dose synthesized |
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