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《Polymer Materials Science & Engineering》 2009-02
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Influence of Phase Coversion Conditions on Performance Structure of the Cellulose Membrane and It′s Mechanism

WU Jun,ZENG Feng-cai(Laboratory of Printing and Packaging Material and Technology-Beijing Area Major Laboratory,Beijing Institute of Graphic Communication,Beijing 102600,China)  
Cellulose membrane was obtained by a method of phase coversion.The phragmoid effects such as the kind of filmogen,concentration,viscosity,temperature,concerntration of coagulation bath on the structure and performance of cellulose film were analysed.The mechanism of phase inversion film formed method was deeply discussed.Experimental results show that the phragmoid process of natural cellulose relies on diffusion dynamics and differential concentration of phase equilibrium.The performance and structure of cellulose film is largely determined by the diffusion velocity of the solvent in forming solution and non-solvent in coagulation bath.And the kind and concentration of phragmoid solution and the case of coagulation bath also have an influence on the performance and structure of cellulose film.
【Fund】: 北京市自然科学基金资助项目(2063026)
【CateGory Index】: TB383.2
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