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SYNTHESIS AND PROPERTIES OF TEMPERATURE-SENSITIVE N-ISOPROPYLACRYLAMIDE COPOLYMER MICROGELS WITH TUNABLE PHASE TRANSITION TEMPERATURE
Author(s): 
Pages: 897-902
Year: Issue:  7
Journal: ACTA POLYMERICA SINICA

Keyword:  微凝胶温度响应性体积相转变N-异丙基丙烯酰胺甲基丙烯酸异丙酯;
Abstract: 选用甲基丙烯酸异丙酯(iPMA)与N-异丙基丙烯酰胺(NIPAM)共聚,制备了一系列疏水改性、相转变温度可调的温敏性P(NIPAM-co-iPMA)微凝胶.利用透射电子显微技术(TEM)、浊度法、动态光散射(DLS)技术及示差扫描量热(DSC)技术对所得微凝胶的形态及去溶胀行为进行了表征.TEM与DLS结果表明,所制备的微凝胶具有规则的球型形态.浊度、DLS及DSC结果表明,疏水性单体iPMA的引入能有效调节共聚物微凝胶的相转变温度;在所考察的范围内,微凝胶的相转变温度随iPMA投料比的增加几乎呈线性降低.
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