文章基本信息

标题：A New Equation between Surface Tension and Solubility Parameters of Cellulose Derivatives depending on DS: Application on Cellulose Acetate
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作者：S. El Barkany ; S. El Barkany ; I. Jilal 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：s
页码：4830-4839
出版社：University of Mohammed Premier Oujda
摘要：Generally, grafting alkylated chains onto cellulose backbone modifies itsphysicochemical properties strongly, and the variation in the hydrophobicity of thecellulose causes significant modifications of these superficial characteristics. In thissense, this study highlighted the effect of the hydrophobicity-hydrophilic balancebrought by the level of grafting chains on the surface tension, and relationship betweenthe surface tension measurements and the solubility parameters of activated surface.The results obtained from FTIR and 13C NMR analysis confirmed the molecularstructure of acetylated compounds with substitution occurring preferably at C-6, C-2and C-3 hydroxyl positions, respectively. The surface active properties wereinvestigated by the density of elaborated polymers and its relationship with theParachors based on the Group Contribution Method. This study may help to increase theusing natural and biodegradable fibers as surface-activity industrial materials. Thecalculations of Parachors (P) and densities of cellulose acetates samples (CA) atdifferent substitution degree (DS) make to find a new relationship between the surfacetension and the DS. These equations show that the surface tension variation dependingon DS can be linearly or polynomial which explains that the surface tension of thecellulose acetate is highly depends on its DS.
关键词：Surface tension;!!Solubility Parameters;!!Degree of substitution;DS;!!Cellulose Acetate;!!Physicochemical;properties.