Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5189528 | Polymer | 2006 | 6 Pages |
Abstract
Poly(l-lactide) (PLLA) was melt blended with poly(methyl methacrylate) (PMMA) using a two-roll mill. The miscibility and hydrolytic degradation of the blend films were characterized. It was found that PLLA/PMMA blend has high miscibility in the amorphous state because only single Tg was observed in the DSC and DMA measurements. In alkaline solution, the hydrolytic degradation rate of the blends whose PMMA content is higher than 30Â wt% was decelerated while the rate of the blends whose PMMA content is lower than 30Â wt% was accelerated. That is, the hydrolytic degradation rate of the blends could be widely controlled by PMMA content in the blend. It was also found that only PLLA was hydrolyzed and eluted into alkaline solution, while PMMA remained during alkaline hydrolysis.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Tomoko Shirahase, Yoichi Komatsu, Yoichi Tominaga, Shigeo Asai, Masao Sumita,