Analysis of the molecular weight distribution of polystyrene

被引：6
|
作者：
Radicevic, R
Kisin, S
Krakovsky, I
机构：
[1] Univ Novi Sad, Fac Technol, YU-21000 Novi Sad, Serbia Monteneg, Serbia
[2] Eindhoven Univ Technol, Dept Solid State & Mat Chem, NL-5600 MB Eindhoven, Netherlands
[3] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague 8, Czech Republic
来源：
CHROMATOGRAPHIA | 2004年 / 59卷 / 9-10期
关键词：
column liquid chromatography; size-exclusion chromatography; polystyrenes from free radical polymerization; molecular weight distribution;
D O I：
10.1365/s10337-004-0259-z
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
In this paper are reported molecular weight distributions (MWD) of polystyrenes obtained by bulk free-radical polymerization of styrene under isothermal conditions. MWD of polystyrenes were determined by gel-permeation chromatography. From analysis of the results it is apparent that samples synthesized at 80 degreesC and 90 degreesC have a bimodal MWD whereas those obtained at 100 degreesC and 110 degreesC have unimodal MWD. By two-peak deconvolution of experimental curves (at 80 degreesC and 90 degreesC) it is possible to separate the contribution of polystyrene obtained before and after onset of the gel effect.
引用
收藏
页码：621 / 624
页数：4
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