文献类型：期刊文献

英文题名：CO2-induced crystal phase transition from form II to I in isotactic poly-1-butene

作者：Li, Lei[1]; Liu, Tao[1]; Zhao, Ling[1]; Yuan, Wei-Kang[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2009

卷号：42

期号：6

起止页码：2286

外文期刊名：Macromolecules

收录：EI(收录号：20092412130224)

语种：英文

外文关键词：Elastomers - Pressure vessels - Plastic products - Hydrostatic pressure

摘要：The high-pressure DSC and WAXD measurements taken in the study suggests that the application of pressurized CO2 was capable of promoting the phase transition of form II to I in iPB-1, which was much more effective in comparison with hydrostatic pressure. The transition of form II into I substantially enhances the mechanical, thermal and physical properties so that iPB-1 with form I is most widely used. Treatments of iPB-1 with form II using CO2 were performed in a high-pressure vessel placed in a homemade oil bath with a temperature controller, and DSC was used to characterize the melting behaviors of of iPB-1 under ambient N2 and high pressure CO2. The kinetics of the CO2-induced phase transition from form II to I, detected by high pressure FTIR indicated that the phase transition rate increased with increasing the CO2 treatment pressure, while decreased with increasing the temperature.