CJCU

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (1): 185.

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Polymorphic Crystals from Different Thermal Treatments and Its Effect on Biodegradation Behavior of Poly(butylene adipate)

ZHAO Li-Fen1,2, JIANG Ni1, GAN Zhi-Hua1*   

  1. 1. CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2. College of Materials, Shandong University of Science and Technology, Qingdao 266510, China
  • Received:2010-03-03 Revised:2010-05-07 Online:2011-01-10 Published:2010-12-11
  • Contact: GAN Zhi-Hua E-mail:zhgan@iccas.ac.cn
  • Supported by:

    国家自然科学基金(批准号: 20474072, 20634050)资助.

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Abstract: On the basis of characteristic polymorphic crystals of poly(butylene adipate) (PBA), the PBA films with α crystal structure were prepared by two methods of melt crystallization and annealing treatment. The polymorphic crystal structure, crystal size and crystalline morphology of PBA α crystals with different thermal history were studied by wide angle X-ray diffraction (WAXD), atomic force microscope (AFM) and differential scanning calorimeter (DSC). The biodegradation behavior of PBA α crystals from different thermal treatments was investigated by following the weight loss with time. The results of this work indicated that the difference of PBA α crystals in spatial orientation of polymer chains in the same crystal lattice due to the different thermal history is the essential reason which results in the different biodegradation rates.

Key words: Poly(butylene adipate), Polymorphic crystal structures, Annealing treatment, Enzymatic biodegradation

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