a.Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.The CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
c.State Key Laboratory of Organic-inorganic Composites, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
Zhi-Hua Gan, E-mail zhgan@mail.buct.edu.cn
收稿:2017-09-02,
录用:2017-10-26,
网络首发:2018-01-19,
纸质出版:2018-06
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Xu-Dong Shi, Pei-Jian Sun, Zhi-Hua Gan. Preparation of Porous Polylactide Microspheres and Their Application in Tissue Engineering[J]. Chinese Journal of Polymer Science, 2018,36(6):712-719.
Xu-Dong Shi, Pei-Jian Sun, Zhi-Hua Gan. Preparation of Porous Polylactide Microspheres and Their Application in Tissue Engineering[J]. Chinese Journal of Polymer Science, 2018, 36(6): 712-719.
Xu-Dong Shi, Pei-Jian Sun, Zhi-Hua Gan. Preparation of Porous Polylactide Microspheres and Their Application in Tissue Engineering[J]. Chinese Journal of Polymer Science, 2018,36(6):712-719. DOI: 10.1007/s10118-018-2079-x.
Xu-Dong Shi, Pei-Jian Sun, Zhi-Hua Gan. Preparation of Porous Polylactide Microspheres and Their Application in Tissue Engineering[J]. Chinese Journal of Polymer Science, 2018, 36(6): 712-719. DOI: 10.1007/s10118-018-2079-x.
In this study
porous polylactide (PLA) microspheres with different structures were prepared through the multiple emulsion solvent evaporation method. By changing organic solvents (ethyl acetate and chloroform) and adding effervescent salt NH
4
HCO
3
in the inner water phase
microspheres with porous capsular
matrix
microcapsular and multivesicular structures were prepared. The protein encapsulation and release
and the cell growth behavior of porous microspheres were further explored. Under the same inner water phase
microspheres prepared with chloroform had higher protein encapsulation efficiency and less protein release rate as compared with those prepared with ethyl acetate. Cell experiments showed that the relatively rough surface of microspheres prepared with chloroform was more favorable for the cell growth in comparison with the smooth surface of microspheres prepared with ethyl acetate. This study shows a simple and effective method to control the protein release and cell growth behaviors of polymer microspheres by tuning their porous structure.
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