摘要
通过微乳液聚合制备了未交联及交联的聚N 异丙基丙烯酰胺 (L PNIPAM及CL PNIPAM)超细微粒 .CL PNIPAM的聚合动力学方程为 :Rp=k[M]1 1 6 [E]- 1 2 0 [I]0 5 3.测得其平均微粒粒径约 10 0nm .用SEM ,迎头色谱法测得交联的CL PNIPAM超细微粒的内比表面积为 49 0 48m2 g ,孔径大小为 1～ 10nm .气体吸附量为1784 8cm3 g .用浊度法及目视法研究了其在水介质中的温敏特性 ,测得其相变温度为 31
The ultrafine particles of linear and cross-linked poly(N-isopropyl acrylamide) were prepared by microemulsion polymerization. The polymerization kinetic equation was derived: R-p = K[M](1.16) [E](-1.20) [I](0.53). The average diameter of ultrafine particles was 100 nm. The structures of the ultrafine particle were studied by SEM and front chromatography techniques. The specific surface area, pore size and adsorbent maximum were 49.048 m(2)/g, 1 similar to 10 nm and 1784.8 cm(3)/g, respectively. The sensitive temperature in water medium was found to be 31.5 degreesC by turbidimetric method and visual method.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2001年第4期489-493,共5页
Acta Polymerica Sinica
关键词
微乳液聚合
超细微粒
聚N-异丙基丙烯酰胺
温度敏感性
相变温度
microemulsion polymerization
ultrafine particle
poly(N-isopropy acrylamide)
temperature sensitivity
phase transition temperature
