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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 320Research on Preparation and Hydrolysis Resistance...

Research on Preparation and Hydrolysis Resistance of Poly(lactic acid) Modified by MDI

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Abstract:

The poly(lactic acid) (PLA) was modified by 4,4'-diphenylmethane diisocyanate (MDI) successfully prepared to improve the stability of PLA. The MDI and the hydroxyl terminated PLA could form PLA modified by MDI (MDI-PLA) via addition reaction. The structure of MDI-PLA was confirmed by FTIR and its degradation properties were investigated. The results showed that the pH of the aqueous media and the ion strength together played an important role in the degradation behavior of the PLA and MDI-PLA. Both of the PLA and MDI-PLA had the highest degradation rate in 0.01 M NaOH. It offers the best stability to hydrolysis resistance by adding the 0.6 wt% of MDI to the PLA materials，and have a more stable of 15 times than unmodified PLA.

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Periodical:

Advanced Materials Research (Volume 320)

Pages:

112-117

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.320.112

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Online since:

August 2011

Authors:

Jian Jiang Shang, Jian Ning Wu, De Qiang Li, Ya Xi Huang, Ling Ming Zhao, Jun Wang, Zhi Yong Liu

Keywords:

Biodegradable Polymer, Hydrolysis Resistance, Isocyanate, Modified, Poly(lactic acid) (PLA)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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