Completely biodegradable composites of poly(propylene carbonate) and short, lignocellulose fiber Hildegardia populifolia

Authors

  • X. H. Li,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, P.O. Box 1122, Guangzhou 510650, China
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  • Y. Z. Meng,

    Corresponding author
    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, P.O. Box 1122, Guangzhou 510650, China
    2. Institute of Energy and Environment Materials, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
    • Guangzhou Institute of Chemistry, Chinese Academy of Sciences, P. O. Box 1122, Guangzhou 510650, China
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  • S. J. Wang,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, P.O. Box 1122, Guangzhou 510650, China
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  • A. Varada Rajulu,

    1. Department of Polymer Science and Technology, S.K. University, Anantapur-515003, India
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  • S. C. Tjong

    1. Department of Physics and Materials Sciences, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
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Abstract

The composites of biodegradable poly(propylene carbonate) (PPC) reinforced with short Hildegardia populifolia natural fiber were prepared by melt mixing followed by compression molding. The mechanical properties, thermal properties, and morphologies of the composites were studied via static and dynamic mechanical measurements, thermogravimetric analysis, and scanning electron microscopy (SEM) techniques, respectively. Static tensile tests showed that the stiffness and tensile strength of the composites increased with an increasing fiber content. However, the elongation at break and the energy to break decreased dramatically with the addition of short fiber. The relationship between the experimental results and the compatibility or interaction between the PPC matrix and fiber was correlated. SEM observations indicated good interfacial contact between the short fiber and PPC matrix. Thermogravimetric analysis revealed that the introduction of short Hildegardia populifolia fiber led to a slightly improved thermooxidative stability of PPC. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 666–675, 2004

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