Spectroscopic study on water diffusion in poly(lactic acid) film

文献情報

出版日 2012-06-18

DOI 10.1039/C2PY20259J

インパクトファクター 5.582

著者

Ying Jin, Wei Wang, Zhaohui Su

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要旨

The diffusion of water in biocompatible semicrystalline poly(lactic acid) (PLA) is investigated using time-resolved ATR-FTIR. There are three different states of water molecules diffusing into the film. Using a 2D correlation analysis, the diffusion process and the role of different functional groups on diffusion is obtained. First, the moderately strongly bound water forms a hydrogen bond with –CO. Then, the water diffuses into free volume (microvoids) and strong hydrogen bonds are formed between two –CO groups and water. The conformations of semicrystalline PLA change during the diffusion process and recover after re-drying. In addition, water first interacts with amorphous segments and then interacts with crystalline segments.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Spectroscopic study on water diffusion in poly(lactic acid) film

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