ISSN:
0887-6266
Keywords:
polymethylmethacrylate (PMMA)
;
syndiotactic
;
isotactic
;
orientation
;
relaxation
;
infrared dichroic ratio
;
entanglements
;
monomeric friction coefficient (ε)
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Orientation and relaxation behavior in uniaxially stretched stereoregular polymethyl-methacrylate (PMMA) was investigated. When compared at a reference temperature T = Tg + constant, isotactic PMMA orients more readily and relaxes slightly faster than the conventional or syndiotactic polymers. Orientation relaxation of the different PMMAs can be reduced to a unique master curve, whatever the tacticity, when the results are compared at same monomeric friction coefficient. © 1996 John Wiley & Sons, Inc.
Additional Material:
11 Ill.
Type of Medium:
Electronic Resource
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