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In-site mineralization of amorphous calcium carbonate particles: A facile and efficient approach to fabricate poly(l-lactic acid) based hybrids |
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| Authors: | Linghao HeLu Yao Jing SunWei Wu Jie YangLifang Cai Rui Song Yongmei HaoZhi Ma Wei Huang |
| Institution: | a Key Lab of Surface and Interface Sciences of Henan Provincial, Zhengzhou University of Light Industry, Zhengzhou 450002, China b College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China c Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China d Laboratory of Advanced Polymer Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | The aim of this investigation is to obtain a polymer-based hybrid material with biodegradability, biocompatibility, and good mechanical properties and this object was realized via. in-situ introduction of the unmodified calcium carbonate (CaCO3) into a poly(l-lactic acid) (PLLA) matrix. As verified by the measurements from scanning electron microscopy (SEM), optical microscopy, dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA), the hybrid films which possesses a uniform dispersion of calcium carbonate CaCO3 in nano-meter scale, mechanically robustness and thermal stability could be fabricated by a mineralization-alike process. For example, the storage modulus increases from 441 MPa of neat PLLA to 1034 MPa of hybrid film containing 2% (w/w) CaCO3. In addition, the hybrid films display a significant improvement in its UV-exposure resistance. |
| Keywords: | l-lactic acid)" target="_blank">Poly(l-lactic acid) Calcium carbonate Biomineralization Hybrids UV-resistance |
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