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.
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页码：621 / 624
页数：4
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