Preparation and characterization of poly(L-lactic acid)/hollow silica nanospheres nanocomposites |
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| Authors: | Yanlan Zheng Kelu Yan Yongliang Zhao Xiaomin Zhu Martin Möller Chunyan Hu |
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| Affiliation: | 1.College of Chemistry, Chemical Engineering and Biotechnology,Donghua University,Shanghai,China;2.National Engineering Research Center for Dyeing and Finishing of Textiles,Shanghai,China;3.DWI-Leibniz Institute for Interactive Materials and Institute for Technical and Macromolecular Chemistry of RWTH Aachen University,Aachen,Germany;4.State Key Laboratory of Molecular Engineering of Polymers,Fudan University,Shanghai,China |
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| Abstract: | This paper-reports the development of a unique nanocomposite material based on poly(L-lactic acid) and hollow silica nanospheres. The composites were produced by melt blending in a twin-screw extruder and then spun into fibers. In order to improve the compatibility between the polymer and the inorganic additive, the surface of the hollow silica nanospheres was modified by a silane coupling agent, acetoxypropyltrimethoxysilane. It was demonstrated by electron microscopy that the modified silica nanospheres were well-dispersed in the polymer matrix. The resulting nanocomposites exhibited slightly improved thermal stability, crystallinity and softness. Remarkably, the hollow spheres, which could encapsulate any active substances, remain intact after the melt processing, allowing promising applications in biomedical fields. |
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