The role of crystallinity on the crazing micromechanism in poly(L-lactic acid) thin film

Y. Y. Lin, C. Y. Kuo, M. H. Liu, Arnold C M Yang, S. Y. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Poly(l-lactic acid)(PLLA) is a kind of semi-crystalline polymers that could be hydrolyzed through hydrolytic scission of the ester groups. Because of its biocompatibility and biodegradability, it is used widely in medical applications, which degradation and change in mechanical properties during hydrolyzing were the key factors. A.C. Renouf-Glauser et al. had investigated the effect of crystallinity on the deformation mechanism of bulk PLLA, but few studies focused on the mechanism of thin films. In the study we aimed to comprehend how various crystallinities affected the mechanical properties of PLLA and the effect of hydrolysis on PLLA. "String-of-pearls" structures revealed in the pristine and high-crystallinity PLLA, proving external tensile stress would lead to the disentanglement of lamellae. By using a simple calculation we found the diameter of lamellae would domain crazes propagation. In hydrolyzed test we found that the micromechanism of PLLA would be affected.

Original languageEnglish
Title of host publication2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
PublisherIEEE Computer Society
Pages901-904
Number of pages4
ISBN (Print)9781424417483
DOIs
Publication statusPublished - 2008
Event2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008 - Shanghai, China
Duration: May 16 2008May 18 2008

Other

Other2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
CountryChina
CityShanghai
Period5/16/085/18/08

Keywords

  • "String-of-pearls"Structures
  • Component:PLLA
  • Hydrolysis

ASJC Scopus subject areas

  • Biotechnology
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'The role of crystallinity on the crazing micromechanism in poly(L-lactic acid) thin film'. Together they form a unique fingerprint.

  • Cite this

    Lin, Y. Y., Kuo, C. Y., Liu, M. H., Yang, A. C. M., & Lee, S. Y. (2008). The role of crystallinity on the crazing micromechanism in poly(L-lactic acid) thin film. In 2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008 (pp. 901-904). [4535101] IEEE Computer Society. https://doi.org/10.1109/ICBBE.2008.221