Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5203574 | Polymer Degradation and Stability | 2011 | 7 Pages |
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 441Â MPa of neat PLLA to 1034Â MPa of hybrid film containing 2% (w/w) CaCO3. In addition, the hybrid films display a significant improvement in its UV-exposure resistance.
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Authors
Linghao He, Lu Yao, Jing Sun, Wei Wu, Jie Yang, Lifang Cai, Rui Song, Yongmei Hao, Zhi Ma, Wei Huang,