文献类型：期刊文献

英文题名：Characterization of poly(ε-caprolactone) via size exclusion chromatography with online right-angle laser-light scattering and viscometric detectors

作者：Huang, Y; Xu, ZD; Huang, YP; Ma, DZ; Yang, JC; Mays, JW

机构：[1]Univ Alabama Birmingham, Dept Chem, Birmingham, AL 35294 USA;[2]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China;[3]Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Peoples R China

年份：2003

卷号：8

期号：6

起止页码：383

外文期刊名：INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000187109400002)】；

语种：英文

外文关键词：multi-detector SEC; poly(epsilon-caprolactone); Mark-Houwink-Sakurada (MHS) equation; radius of gyration; molecular weight; Flory's characteristic ratio C-infinity

摘要：Poly(epsilon-caprolactone) was characterized by size exclusion chromatogrophy on-line with a right-angle laser-light scattering photometer and a four-capillary bridge design differential viscometer (SEC/RI/RALLS/ DV) in tetrahydrofuran (THF) at 25degreesC. The dependence of intrinsic viscosity and radius of gyration of poly(epsilon-caprolactone) on molecular weight was established, and Flory's characteristic ratio C-infinity was calculated for this polymer from these data. The results show that THF is a good solvent fir poly (epsilon-caprolactone). Poly(epsilon-caprolactone) exhibits a random-coil conformation in THF, and SEC with online RALLS and DV detectors offer an easy way to obtain information on chain flexibility. The C-infinity results are in good accord with previously reported values for this polymer.