ISSN:
0323-7648
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Racemic and optically active 3-phenoxy-1,2-epoxypropane (phenylglycidylether, PGE) were polymerized in an ethereal solvent by an initiator system formed by combination of aluminum isopropoxide with one of four different zinc salts (chloride, bromide, iodide and acetate) in several ratios. Conversions and molecular weights of the isotactic polymer fraction are clearly related to the coordinating ability as a Lewis acid of the salts. Using water as co-initiator, the non-stereoselective sites are inactivated and therefore conversions and molecular weights of isotactic polymer increase. Both racemic and enantiomerically pure PPGEs show similar X-ray patterns but some differences in the DSC plots are observed. Conversions, molecular weights and degrees of crystallinity of the isotactic polymer fraction obtained were studied and related to the polymerization conditions and the reaction mechanism.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/actp.1996.010470604
