ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
In our recent overview of liquid crystalline polyesters of trans-4,4′-stilbenedicarboxylic acid (SDA) and aliphatic glycols,1 we reported that “… the 1,3-propanediol polyester did not exhibit thermotropic liquid crystallinity (no stir opalescence or DSC endotherm above Tm), perhaps because of the relatively high Tm (303°C) for a polymer of a glycol having an odd number of carbon atoms.” We now have studied the melting characteristics of another sample of this polymer more carefully and have concluded that it does exhibit a liquid crystalline mesophase over a very narrow temperature range. In this Note we give the thermal properties of this polymer and the thermal and mechanical properties of an SDA/1,3-propanediol copolyester which we also injection molded. These properties are compared and contrasted with those of the similar polyester and copolyester prepared with 1,4-butanediol instead of 1,3-propanediol.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1987.080250211
