You are not logged in Total: 7journals, 20,171articles Online
AccountAccount
Login / Register
Forgot Login?
 
Main menuMain menu
What's new
Journal list
Visiting ranking
Phrase ranking
Polls
About us
 
SearchSearch
 
Journal Site
Advanced Search
 

Home  >  Journal list  >  Polymer Journal  >  Vol.26  No.7 (1994)  >  pp.822-827

Polymer Journal
<<Previous article Vol.26  No.7 (1994)   pp.822 - 827 Next article>>

Thermal Analysis of Selectively-Brominated Polystyrene

K. Pielichowski1), A. Puszynski2) and J. Pielichowski1)
1) Institute of Organic Chemistry and Technology, Technical University of Kraków
2) Institute of Organic and Polymer Technology, Technical University of Wrocìaw


ABSTRACT:  In the present work thermogravimetric analysis (TGA) and differential thermal analysis (DTA) of selectively brominated polystyrene (PS) were carried out. The samples of PS were selectively brominated in the chain, on the ring, and also in both chain and ring. The effect of bromine content on the thermal stability was studied both in air and in inert atmosphere. Kinetic parameters of the degradation process (apparent activation energy, pre-exponential factor and order of reaction) were established using an efficient numerical procedure. Localization of bromine influenced the initial decomposition temperature (IDT) and the integral procedural decomposition temperature (IPDT). Samples containing bromine in the chain appeared to be the least stable. A possible explanation is given and mechanisms of degradation are suggested.


Keyword:
Brominated Polystyrene/ Thermal Analysis/ Kinetics of Degradation

Published online: April 03, 2005
© Copyright, 2005 by The Society of Polymer Science, Japan

PDFPDF file (J-STAGE)J-STAGEJ-STAGE


SPARC Japan

Terms of Use | Privacy Policy