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Synthesis, characterization and antibacterial properties of novel cellulose acetate sorbate.
Wei, Liying; Song, Jun; Cheng, Bowen; Yang, Zhanping.
Afiliación
  • Wei L; State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
  • Song J; State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Material Science and Engineering, Tiangong University, Tianjin 300387, China. Electronic address: sjhb2000@163.com.
  • Cheng B; State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China. Electronic address: bowen15@tjpu.edu.cn.
  • Yang Z; Nantong Cellulose Fibers Co., Ltd., Nantong 226008, China.
Carbohydr Polym ; 243: 116416, 2020 Sep 01.
Article en En | MEDLINE | ID: mdl-32532385
In this paper, cellulose acetate (CA) with different degree of substitution (DS) of 2.17∼1.75 were obtained through hydrolysis of cellulose diacetate (CDA). Furthermore, novel cellulose acetate sorbate (CASA) were synthesized by esterification of CA and sorbic acid (SA). The DS of sorbyl groups varied within 0.12-1.20 by adjusting composition ratio, reaction time and temperature. Fourier transform infrared spectroscopy (FTIR), Nuclear magnetic resonance spectroscopy (NMR) and elemental analysis were used to determine the chemical structure. Scanning electron microscopy (SEM) indicated CASA showed denser surface morphology than CA. Thermal properties and crystallization of CASA were slightly decrease but did not affect their service performance. Specifically, all CASA showed excellent antibacterial ability, the maximum relative bactericidal rate reached 81.5 % for Escherichia coli (E. coli) and 95.4 % for Staphylococcus aureus (S. aureus), respectively. Moreover, the obtained CASA films using casting technique possessed good mechanical properties. These antibacterial CASA exhibited potential application in healthcare fields.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ácido Sórbico / Materiales Biocompatibles / Celulosa / Nanofibras / Antibacterianos Idioma: En Revista: Carbohydr Polym Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ácido Sórbico / Materiales Biocompatibles / Celulosa / Nanofibras / Antibacterianos Idioma: En Revista: Carbohydr Polym Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido