应用化学2017，Vol.34Issue(5)：512-518,7.DOI:10.11944/j.issn.1000-0518.2017.05.160333
三醋酸纤维素纳米纤维膜的制备及其油水分离应用
Fabrication of Triacetate Cellulose Nanofiber Membranes and Their Application for Oil-Water Separation
摘要
Abstract
Oil pollution caused by oil exploitation and oil carrier transportation leakage have become increasingly prominent, so lightweight, hydrophilic and oleophobic materials for oil-water separation have attracted increasing attention.In this paper, triacetate cellulose(TCA) nanofiber membranes were prepared by thermally induced phase separation method from dimethylacetamide solution without the assistance of other additives.The effects of variables such as polymer concentration, quenching temperature and time on the morphology of TCA nanofiber membranes were studied.The morphology, porosity, and specific surface area of TCA nanofiber membranes were characterized by SEM, ethanol method, and N2 adsorption-desorption.The results show that the optimum experiment conditions are as follow: quenching time is 180 min, quenching temperature is-20 ℃, and concentration is 5% mass fraction, producing the uniform nanofiber membranes with diameters of (110±28) nm.Compared with the monolithic TCA solvent-cast film, the water contact angle of TCA nanofibers membranes increases from 86.2° to 137.5°, which is contributed to its high porosity, specific surface area and particular nano-/micro-dual scale structures.Owing to the high hydrophobicity and oleophilicity and massive capillary action, the TCA nanofiber membranes display oil absorption capacity up to 21.5 g/g.Additionally, it can absorb oil quickly in preference to water in an oil-water mixture.The TCA nanofiber membranes may find practical application as a biodegradable oil-spill cleanup material.关键词
热致相分离/三醋酸纤维素/纳米纤维/油水分离Key words
thermally induced phase separation/triacetate cellulose/nanofibers/oil water separation分类
化学化工引用本文复制引用
刘俊劭,刘瑞来,赵瑨云,饶瑞晔..三醋酸纤维素纳米纤维膜的制备及其油水分离应用[J].应用化学,2017,34(5):512-518,7.基金项目
国家自然科学基金(51406141)、福建省教育厅JK类项目(2014052,2012055)和南平市科技局自然科学基金(2011DJ10)资助 （51406141）
Supported by the National Natural Science Foundation of China(No.51406141), JK Project of Fujian Educational Bureau(No.2014052, No.2012055), Natural Science Foundation of Nanping Science and Technology Bureau(No.2011DJ10) （No.51406141）
