Practical aspects of polymerization of  D , L ‐Lactide initiated with tetraphenyltin | Zendy

Mehta Sanjay | Zendy; Raghuvanshi R. S. | Zendy; Misra A. | Zendy; Ganga S. | Zendy; Talwar G. P. | Zendy

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Practical aspects of polymerization of D , L ‐Lactide initiated with tetraphenyltin

Author(s) -

Mehta Sanjay,

Raghuvanshi R. S.,

Misra A.,

Ganga S.,

Talwar G. P.

Publication year - 1995

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1995.070580911

Subject(s) - polymerization , polymer , polymer chemistry , lactide , molar mass distribution , degree of polymerization , chemistry , ring opening polymerization , materials science , organic chemistry

Melt polymerization conditions for D , L ‐Lactide initiated with tetraphenyltin were studied with regard to polymer molecular weight. The combined effect of time and temperature on polymer molecular weight and degree of conversion of D , L ‐Lactide is described. Polymerization at constant initiator concentrations resulted in a narrow scattering of reproducible molecular weight values. The presence of air/moisture and other impurities during the melt polymerization most likely have a deterimental effect on molecular weight. After a short induction period the rather slow polymerization of D , L ‐Lactide resulted in a maximal molecular weight followed by an almost constant value of molecular weight. © 1995 John Wiley & Sons, Inc.

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