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Effect of Chemical Composition on the Response of Zwitterionic Glucose Sensitive Hydrogels Studied by Design of Experiments

机译:实验设计研究化学组成对两性离子葡萄糖敏感水凝胶响应的影响

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摘要

A stimuli-responsive hydrogel that contains the anionic monomer 3-acrylamidophenylboronic acid and the cationic monomer N-[3-(dimethylamino)propyl]acrylamide binds with cis-diol groups of glucose molecules selectively and reversibly. Even though such hydrogels have good selectivity for glucose, there are still remaining thresholds that should be overcome to enhance the sensitivity (swelling pressure response magnitude) and to reduce the response time (inverse of 1st order rate constant). In this study, the sensitivity and response time of zwitterionic glucose sensitive hydrogels (GSHs) were studied with three factor DOE analysis. The DOE results show that the molar ratio of 3-acrylamidophenylboronic acid/N-[3-(dimethylamino)propyl]acrylamide and the wt % of monomer in the pregel solution are the most important factors for enhancing the hydrogel sensitivity. In addition, fast response times can best be achieved by decreasing the molar ratio of cross-linker. The results of this study will be useful as guidelines for the optimal synthesis of glucose sensitive hydrogels.
机译:包含阴离子单体3-丙烯酰胺基苯基硼酸和阳离子单体N- [3-(二甲基氨基)丙基]丙烯酰胺的刺激响应水凝胶与葡萄糖分子的顺式-二醇基选择性和可逆地结合。即使这样的水凝胶对葡萄糖具有良好的选择性,仍然存在必须克服的剩余阈值,以提高灵敏度(膨胀压力响应幅度)并减少响应时间(与一阶速率常数成反比)。在这项研究中,两性离子葡萄糖敏感水凝胶(GSHs)的敏感性和响应时间通过三因素DOE分析进行了研究。 DOE结果表明,预凝胶溶液中3-丙烯酰胺基苯基硼酸/ N- [3-(二甲基氨基)丙基]丙烯酰胺的摩尔比和单体的wt%是提高水凝胶敏感性的最重要因素。另外,可以通过降低交联剂的摩尔比来最佳地实现快速响应时间。这项研究的结果将作为葡萄糖敏感水凝胶的最佳合成指导。

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