PREPARATION OF STAR-SHAPED POLYLACTIDE WITH PENTAERYTHRITOL AND STANNOUS OCTOATE
SCIE
- Title
- PREPARATION OF STAR-SHAPED POLYLACTIDE WITH PENTAERYTHRITOL AND STANNOUS OCTOATE
- Authors
- AHN, KD; CHANG, T; HAN, YK; KIM, SH; KIM, YH
- Date Issued
- 1993-12
- Publisher
- ACADEMIC PRESS INC
- Abstract
- The ring-opening polymerization of L-lactide with stannous octoate was investigated in the presence of pentaerythritol. By this way it was possible to prepare higher molecular weight star-shaped poly(L-lactide)s compared with the linear ones obtained by stannous octoate only. The weight-average molecular weights of linear and star poly(L-lactide)s were measured by light scattering analysis from hexafluoro-2-propanol solution, and the respective Mark-Houwink equations were derived. The second virial coefficient and the intrinsic viscosity of the star polymers were lower than those of the linear ones, which confirms the star-shaped architecture.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22027
- ISSN
- 1022-1352
- Article Type
- Article
- Citation
- MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS, vol. 194, no. 12, page. 3229 - 3236, 1993-12
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