Preparation of a cellulose acetate/organic montmorillonite composite porous ultrafine fiber membrane for enzyme immobilization |
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| Authors: | Jinning Zhang Mingyu Song Xiaoyu Wang Jieru Wu Zhanping Yang Jianhua Cao Yun Chen Qufu Wei |
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| Affiliation: | 1. Key Laboratory of Eco‐Textiles (Ministry of Education), Jiangnan University, Wuxi, Jiangsu, People's Republic of China;2. Technical Center, Nantong Cellulose Fiber Company, Nantong, Jiangsu, People's Republic of China |
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| Abstract: | Four types of fibrous membranes based on cellulose acetate (CA)—CA membranes with nonporous fibers, CA/organic montmorillonite (O‐MMT) membranes with nonporous fibers, CA membranes with porous fibers, and CA/O‐MMT membranes with porous fibers—were prepared by electrospinning, and then, they were used for enzyme immobilization. The surface morphologies of the composite fibrous membranes were investigated with scanning electron microscopy and transmission electron microscopy. The optimum pH was 3.5 for all of the immobilized enzymes, and the optimum temperature was 50 °C. Compared with the free enzyme, the immobilized enzyme showed better stability for pH and temperature changes. Moreover, the addition of O‐MMT and the pores on the fibers improved the storage stability and the operational stability. Among the four kinds of fibrous membranes, the CA/O‐MMT membranes with porous fibers showed the best stability for the immobilized enzymes. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43818. |
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| Keywords: | adsorption clay fibers membranes porous materials |
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