期刊
EXPRESS POLYMER LETTERS
卷 7, 期 4, 页码 320-328出版社
BUDAPEST UNIV TECHNOL & ECON
DOI: 10.3144/expresspolymlett.2013.29
关键词
polymer composites; biodegradable polymers; thermal properties; graphene
资金
- National Research Foundation of Korea (NRF)
- Korea government (MEST) through GCRC-SOP [2011-0030668]
- Industrial Strategic Technology Development Program [10038606]
- Ministry of Knowledge Economy (MKE, Korea)
- Korea Evaluation Institute of Industrial Technology (KEIT) [10038606] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Novel biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [PHBV]/graphene nanocomposites were prepared by solution casting. The thermal properties, crystallization behavior, microstructure, and fracture morphology of the composites were investigated. Scanning electron microscope (SEM) results show that graphene layers are homogeneously dispersed in the polymer matrix. X-ray diffraction (XRD) and dynamic scanning calorimetry (DSC) studies show that the well dispersed graphene sheets act as nucleating agent for crystallization. Consequently, the mechanical properties of the composites have been substantially improved as evident from dynamic mechanical and static tensile tests. Differential thermal analysis (DTA) showed an increase in temperature of maximum degradation. Soil degradation tests of PHBV/graphene nanocomposites showed that presence of graphene doesn't interfere in its biodegradability.
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