摘要
采用自由基胶束水溶液聚合方法制备了疏水改性聚N-异丙基丙烯酰胺水凝胶(P(NIPA-co-MA/EA/BA/DA)),研究了该类水凝胶和PNIPA水凝胶在去离子水及NaCl、Na2SO4、乙醇水溶液中的溶胀行为及与温度的关系。结果表明,聚合物水凝胶在水溶液中的行为与凝胶化学结构、温度、水溶液中的溶质的种类和含量有关。
In order to prepare the polymer material more sensitive to the stimulated signal, and explore the relation between polymer structure and properties at different environmental condition, hydrophobically modified poly-N-isopropylacrylamide(PNIPA) hydrogels: poly(N-isopropylacrylamide-co-methyl acrylate/ethyl acrylate/butyl acrylate/dodecyl acrylate) was synthesized by free micellar copolymerization in aqueous solutions. The swelling behavior of the hydrophobically modified PNIPA hydrogels and the PNIPA hydrogels in the various aqueous solution such as deioned water, sodium chloride, sodium sulfate and grain alcohol at different temperature were studied. The results show that the swelling behaviors of the polymer hydrgels in the aqueous solution are related to the chemical structure of the hydrogels, temperature and the category and content of solute in the aqueous solution. Poly(N-isopropylacrylamide-co-methyl acrylate) hydrogels have excellent sensitivity of temperature and sensitivity of solute concentration in the hydrogels studied. When the inorganic salt is added to the deioned water, the swelling ratio of hydrogels decreases, and the sensitivity of temperature reduces; When a little grain alcohol is added to the deioned water, the swelling ratio of hydrogels decreases obviously; However, when a great deal of grain alcohol is added to the deioned water, the swelling ratio increases in reverse.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第4期160-163,167,共5页
Polymer Materials Science & Engineering
基金
四川省青年科技基金
四川大学青年基金资助项目
