Polystyrene modifications. II. Ring-substituted polystyrenes
โ Scribed by K. R. Dunham; J. W. H. Faber; J. Vandenberghe; W. F. Fowler Jr.
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- English
- Weight
- 566 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
โฆ Synopsis
Poly( 3,pdimethylstyrene) Insoluble 107, 111
TABLE IV Glass Transition Temperatures of Poly( dihaloetyrenes) Compound (9)
T,, "C. Poly( 4-chloro-3-fluorostyrene) Insoluble 122 Poly(3,Pdichlorostyrene) 0.92 128 Poly( 2,5dichlorcmtyrene) 1.36 106 Poly( 2,Pdichlorostyrene) 1.02 135 TABLE V Glass Transition Temperatures of Disubstituted Polystyrenes ~~ Compound (11 1 T,, "C. Poly( 4-chloro-3-methylstyrene) 2.27 114 Poly( Pehlorc-Zmethylstyrene) 0.58 145 Poly( 2-methyl-5-tert-butylst.yrene) 1.54 87
R6snm6
Ces p o l y m b ~ ont en gBn6ral des temp6ratures de transition vitreuse plus BlevpeS que le polystyrbne, quoiqu'on ait trouv6 quelques exceptions. Dam certains sysames disubstitub, la T, C t a i t une fonction additive des g r o u p individuels. Les cristallinitee des polymhres S substituant mbthyle vsriaient suivant les positions occup6es dam le noyau. Les tendances au fendillement superficiel Btaient Cquivalentes S celles du polyatyrhe.
On a preparb et polym6ris6 des styrbnes substitub dam le noyau.
Ringmbstituierte Styrole wurden dargeatellt und polymerisiert. Die Polymeren
๐ SIMILAR VOLUMES
## Abstract Proton magnetic resonance spectra of nine substituted polystyrenes: polymers of __o__โmethyl, __m__โmethyl, __p__โmethyl, __p__โchloroโ, 2,4โdimethylโ, ฮฑ,ฮฒ,ฮฒโฒโtrideuteroโ, ฮฒโ deuteroโ, 2,6โdimethylโ4โ__tert__โbutylโ, and __pโtert__โbutylstyrene, in addition to five polystyrene samples d