壳聚糖水凝胶溶胀性能的研究

• 作 者: 王金环 杜声亮 王士奎 张友中 杨永
• 机 构: 廊坊师范专科学校,廊坊师范专科学校,廊坊师范专科学校,廊坊师范专科学校,廊坊师范专科学校 廊坊 102849,廊坊 102849,廊坊 102849,廊坊 102849,廊坊 102849
• 出 处: 化学世界
• 发表日期: 1993年03期
• 关键词: 壳聚糖水凝胶 溶胀性能

壳聚糖水凝胶在pH7.0,0.2%甘氨酸缓冲溶液中的最高溶胀比R为637.5,溶胀体积比Rv为12.75;当pH≤7.0时,表现强的吸水性;pH>8.5时脱水收缩;在<1%NaCl溶液中,表现出不同程度的吸胀性;在≥1%NaCl溶液中,无吸胀性,随着环境温度的升高,吸胀性下降;甲醇作为成胶介质,凝胶的吸胀性最强;交链度与壳聚糖水凝胶的Rv成反比。因此认为,壳聚糖水凝胶在农业、医药、化工和生物学的应用及研究中将表现重要作用。

The highest swelling ratio R of chitosan hydrogel in pH7.0, 0.2% glycine buffer solution is 637.5, the swelling volume ratio Rv is 12.75; when pH≤7.0, it shows strong water absorption; dehydration shrinks when pH> 8.5; In <1% NaCl solution, showed different degree of swelling; in ≥ 1% NaCl solution, no swelling, with the increase of ambient temperature, swelling decreased; methanol as a plasticizing medium, condensation The swelling of the gel is strongest; the degree of cross-linking is inversely proportional to the Rv of the chitosan hydrogel. Therefore, it is considered that chitosan hydrogel will play an important role in the application and research of agriculture, medicine, chemistry and biology.