【摘要】 本文合成了以甲基丙烯酸为基础的各类pH敏感型水凝胶，并研究它们的溶胀行为．初步探索了水凝胶的组成与其pH敏感的关系，比较了阴离子型水凝胶、阳离子型水凝胶和两性水凝胶的溶胀热力学和动力学行为，得出了两性水凝胶在整个pH范围内都有一定的溶胀比，且在pH个性时，其溶胀速度要高于相应的阴离子型和阳离子型水凝胶。更多还原

【Abstract】 Several kinds of pH-sensitive hydrogels based on acrylic acid were synthesized andstudies on their swelling behaviors were also undertaken. Influence of composition of hydrogelson their swelling behaviors was studied. Comparisons on swelling behaviors of cationic, anionicand amphoteric hydrogels were made. Compared with the cationic and anionic hydrogels,amphoteric hydrogels had a certain degree of swelling (DS) at the whole range of pH and a morerapid swelling speed than its counterparts at pH=7.00.更多还原