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Properties of biodegradable poly(butylene carbonate) (PBC) composites with fumed silica nanoparticles

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Abstract

Biodegradable poly(butylene carbonate)/fumed silica (PBC/SiO2) nanocomposites were prepared by melt compounding. The PBC/SiO2 nanocomposites exhibited a good dispersion of aggregates of SiO2 in the PBC matrix, and an improvement in mechanical properties. Nanoparticles affect, also, the thermal properties of PBC and especially the crystallization rate, which in all nanocomposites is faster than that of pure PBC. Due to ongoing crystallization and the crystal perfection during heating process, the melting peak of PBC shifted to higher temperature when heating from amorphous state with decreasing heating rate. With increasing cooling rate, the non-isothermal crystallization exotherms became wider and shifted to lower temperature. At a given cooling rate, the crystallization peak temperature of neat PBC was lower than that of its nanocomposite. Non-isothermal crystallization kinetic procedure, the method of Ozawa, was applied to the first deconvoluted DSC peak only by processing the data related to DSC peak. The average value of Ozawa exponent m of pure PBC is 3.04, while the one of its nanocomposite is about 2.98. Moreover, the thermal stability of the nanocomposites was increased. The T d enhancement of the nanocomposite was remarkable.

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Authors and Affiliations

  1. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China

    Xuemei Wang, Yugang Zhuang & Lisong Dong

  2. Graduate School of the Chinese Academy of Sciences, Beijing, 10080, China

    Xuemei Wang

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  1. Xuemei Wang
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  2. Yugang Zhuang
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  3. Lisong Dong
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Correspondence to Lisong Dong.

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Wang, X., Zhuang, Y. & Dong, L. Properties of biodegradable poly(butylene carbonate) (PBC) composites with fumed silica nanoparticles. J Therm Anal Calorim 114, 77–84 (2013). https://doi.org/10.1007/s10973-012-2862-9

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  • DOI: https://doi.org/10.1007/s10973-012-2862-9

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