论文部分内容阅读
利用水溶液聚合法,丙烯酸(AA)接枝共聚到聚天冬氨酸(PASP)和羧甲基壳聚糖(CMCS)杂化基体上,与皂土复合,合成了可生物降解的PASP/CMCS-g-PAA/皂土电响应性水凝胶。采用FT-IR、SEM表征了凝胶的结构及形貌,并研究了复合凝胶的电刺激响应行为。结果表明,平衡溶胀度随NaCl溶液离子强度的增加而减小,在pH=8的磷酸缓冲溶液中有最大溶胀度;在非接触直流电场中,复合凝胶的弯曲方向和平衡弯曲角度受AA和皂土用量以及溶液的pH和离子强度的影响。
The biodegradable PASP / CMCS was synthesized by water solution polymerization, acrylic acid (AA) graft copolymerization onto polyaspartic acid (PASP) and carboxymethyl chitosan (CMCS) -g-PAA / bentonite responsive hydrogel. The structure and morphology of the gel were characterized by FT-IR and SEM, and the electrical stimulation response of the composite gel was also studied. The results showed that the equilibrium swelling degree decreased with the increase of the ionic strength of NaCl solution and the maximum swelling degree in the phosphate buffer solution with pH = 8. In the non-contact DC electric field, the bending direction and equilibrium bending angle of the composite gel were affected by AA And the amount of bentonite and the solution pH and ionic strength.