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Polymers 2016, 8(4), 129; doi:10.3390/polym8040129

Preparation of Esterified Bacterial Cellulose for Improved Mechanical Properties and the Microstructure of Isotactic Polypropylene/Bacterial Cellulose Composites

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Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
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University of Chinese Academy of Sciences, Beijing 100049, China
3
Research and Development Center of Xuyi Attapulgite Applied Technology, Chinese Academy of Sciences, Xuyi 211700, China
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Guangzhou Fibre Product Testing and Research Institute, Guangzhou 510220, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Antonio Pizzi
Received: 29 February 2016 / Revised: 24 March 2016 / Accepted: 31 March 2016 / Published: 12 April 2016
View Full-Text   |   Download PDF [5687 KB, uploaded 12 April 2016]   |  

Abstract

Bacterial cellulose (BC) has great potential to be used as a new filler to reinforce isotactic polypropylene (iPP) due to its high crystallinity, biodegradability, and efficient mechanical properties. In this study, esterification was used to modify BC, which improved the surface compatibility of the iPP and BC. The results indicated that the cellulose octoate (CO) changed the surface properties from hydrophilic to lipophilic. Compared to the pure iPP, the tensile strength, charpy notched impact strength, and tensile modulus of the iPP/BC composites increased by 9.9%, 7.77%, and 15.64%, respectively. However, the addition of CO reinforced the iPP/CO composites. The tensile strength, charpy notched impact strength, and tensile modulus of the iPP/CO composites increased by 14.23%, 14.08%, and 17.82% compared to the pure iPP. However, the elongation at break of both the composites is decreased. The SEM photographs and particle size distribution of the composites showed improvements when the change of polarity of the BC surface, interface compatibility, and dispersion of iPP improved. View Full-Text
Keywords: bacterial cellulose; isotactic polypropylene; composites; mechanical properties; esterification bacterial cellulose; isotactic polypropylene; composites; mechanical properties; esterification
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, B.; Yang, D.; Zhang, H.-R.; Huang, C.; Xiong, L.; Luo, J.; Chen, X.-D. Preparation of Esterified Bacterial Cellulose for Improved Mechanical Properties and the Microstructure of Isotactic Polypropylene/Bacterial Cellulose Composites. Polymers 2016, 8, 129.

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