| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Preparation of Sodium Alginate/POSS Organic-Inorganic Hybrid HollowMicrocapsules and Their Properties |
| ZHANG Xiaojing, DOU Jingcheng, MIAO Longqiang, CHEN Zhengyang, SHEN Weiwei
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| College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002 |
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Abstract Awater-soluble cationic polyhedral oligomeric silsesquioxane (POSS) instead of the traditional calcium chloride coagulation bath was employed together with sodium alginate (SA) to prepare a series of hybrid organic and inorganic microcapsules (SA/POSS) via dropping method. The structure and properties of the obtained SA/POSS microcapsules were also characterized. It could be found from the results of FT-IR, XRD, SEM, TG and swelling experiment that a strong electrostatic interaction exist between POSS and SA. The introduction of POSS wea-kened the ordered arrangement of SA molecules, and SA/POSS organic-inorganic hybrid microcapsules presented amorphous structure. Speci-fically, the microcapsules possessed a compact outer wall and a hollow interior, with the structure gradually become looser from outside to inside. In addition, SA/POSS microcapsules show superior thermal stability to SA. The SA/POSS hollow microcapsules could reach swelling equilibrium in deionized water and HCl solution quickly, with the equilibrium swelling ratios of 17.2%—33.1% and 15.9%—20.3%, respectively, while they would break in PBS buffer and finally dissolved.
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Published: 31 May 2019
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| Fund:This work was financially supported by the National Natural Science Foundation of China (U1704160,21474092) and Research on the Foundation and Frontier Technology of Henan Science and Technology Department (142300410041) |
| About author:: Xiaojing Zhangreceived her Ph.D. degree in polymer chemistry and physic from Institute of Chemistry (CAS) in 2006. She is currently a professor in Zhengzhou University of Light Industry and participates in the development of organic-inorganic nanocomposites. Her research interests are preparation, characterization and application of nanocomposites based on polyhedral oligomeric silsesquioxane (POSS). |
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2019, Vol. 33 
