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Polyesters from Lactones

المؤلف:  A. Ravve

المصدر:  Principles of Polymer Chemistry

الجزء والصفحة:  p428-430

2026-02-07

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Polyesters from Lactones

Polyesters that are obtainable by ring opening polymerization of lactones are not produced commercially on a large scale. Judging from the patent literature, however, there is a continuing interest in these materials, particularly in Japan. Because of fairly good hydrolytic stability, polypivalyllactone is at the most advanced stages of commercial development:

The polymer can be spun into an elastic yarn of very fine denier. It is also claimed to exhibit good mechanical properties for molding and compares favorably with commercial polyesters and nylons. Also, polycaprolactone was reported to be used in some medical applications in biodegradable surgical sutures and postoperative support pins and splints [39]. Similar uses are also found for two other polyesters, poly (lactic acid) and poly-(glycolic acid) [40]. The two polymers form from their cyclic dimers by cationic ring opening polymerizations with the aid of Lewis acids: