文献类型：期刊文献

英文题名：Analysis and modeling of moisture sorption behavior for antimicrobial composite protein films

作者：Lei, Qiao[1,2];Pan, Jiazhen[1];Bao, Jianqiang[2];Huang, Zhiying[2];Zhang, Yuting[2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China

年份：2014

卷号：24

期号：6

起止页码：1969

外文期刊名：BIO-MEDICAL MATERIALS AND ENGINEERING

收录：;EI(收录号：20144000077843);WOS:【SCI-EXPANDED(收录号:WOS:000343005700009)】；

基金：This work was financed by the Shanghai University Knowledge Service Platform and Shanghai Ocean University aquatic animal breeding center (ZF1206), and it was also supported by the Industry-Academy-Research cooperation project from the Shanghai City Board of Education. The authors gratefully acknowledge their support.

语种：英文

外文关键词：WPI-NaCas-GLY antimicrobial film; Peleg model; moisture adsorption isotherm; water activity

摘要：The WPI-NaCas-GLY antimicrobial film takes full advantage of the controlled release of active or antimicrobial agents as well as demonstrates a great potential for functioning as an alternative biodegradable polymer in practical applications. The moisture sorption kinetics of the film as an important carrier of active agents was investigated at various relative humidities (RH). The results indicated that the moisture sorption characterization and procedure of this film can be described well by the empirical Peleg model with higher confidence and concordance. The model could predict the film's moisture content at any time (M-t), the time to reach any given level of R (t(R)), the equilibrium moisture at any RH condition (M-e), and isotherm trend based upon experimental data and modeled constants k(1), k(2), a, b, c, and d without giving consideration to their physical meaning. The water vapor transmission rate of the WPI-NaCas-GLY antimicrobial film increased exponentially with increasing RH due to its hydrophilicity, which was primarily caused by the presence of glycerol in a higher content. The results also suggested that a(w) predominately affects the film's M-e values compared with the temperature factor by fixed nonlinear multiple regression analyses.