College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi''an Shaanxi Province 710021 China;
College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi''an Shaanxi Province 710021 China;
College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi''an Shaanxi Province 710021 China;
College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi''an Shaanxi Province 710021 China;
College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and Technology Xi''an Shaanxi Province 710021 China;
cellulose; chitosan; composite materials; water treatment; drug release;