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Microfiltration membrane prepared by starch / cellulose-based materials via crossed-Claisen condensation reaction

Authors： ZHANG Ruifeng1,2， HUANG Shaobin1,2*， WU Wenqing1,2， ZHU Guangfu3

Units： 1.College of Environment Science and Engineering, South China University of Technology, Guangzhou 510006, China; 2.The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China; 3.Guangdong Shangjiu Biodegradable Plastics Co., Ltd. DongGuan 523128, China)

KeyWords： starch acetate; tributyl citrate; sodium ethoxide; crossed-Claisen condensation; microfil

ClassificationCode：TQ321.22

year,volume(issue):pagination： 2013,33(2):29-36

Abstract：

Use starch acetate which prepared in the laboratory and cellulose acetate as raw materials, then make them blended and dissolved in acetone, under the effect of tributyl citrate and sodium ethoxide to conduct the crossed-Claisen condensation reaction, and finally prepared some microfiltration membranes by phase separation method. Those prepared microfiltration membranes were characterized and tested by FT-IR, XRD, TGA, SEM and cup-type ultrafilter. The results shows that starch acetate have better performance of dissolve and reaction in this cross-linking system, tributyl citrate conduct efficacious ester condensation reaction with starch acetate and Cellulose Acetate in this cross-linking system, and this type of reaction can also greatly reduce the degree of crystallinity of Starch Acetate. Those prepared microfiltration membranes have good performance of mechanical and steady thermal performance below the temperature of 200℃, and have abundant sponge-like porous structure, their average porosity between 70% to 80%, the retention rate of microfiltration membranes about pseudomonas putida which prepared in the laboratory can reach 95%.

Funds：

广东省经济和信息化委员会项目（20100106-3）、广东省科技厅－省部产学研结合项目（2011B090400284）和国家自然科学基金项目（20777019）

AuthorIntro：

张瑞峰（1985-），男，江苏仪征人，硕士研究生，主要从事纤维素醚改性和高分子微孔滤膜制备与改性研究，< 371217623@qq.com>。*通讯联系人，< chshuang@scut.edu.cn >

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