title: Layer-by-layer immobilization of quaternized carboxymethyl chitosan/organic rectorite and alginate onto nanofibrous mats and their antibacterial application.
abstract: Quaternized carboxymethyl chitosan (QCM-chitosan) and organic rectorite (OREC) immobilized nanofibrous mats are fabricated via layer-by-layer (LBL) technique in a self-assembly manner. The negatively charged cellulose nanofibrous mats hydrolyzed from electrospun cellulose acetate (CEL) mats are alternately modified with the positively charged QCM-chitosan and OREC intercalated composites and the negatively charged sodium alginate (ALG) via LBL technique. The morphology and antibacterial activity of the resultant mats are studied by changing the number of deposition bilayers, the compositions of dipping solutions and outermost layer. X-ray photoelectron spectroscopy results imply that QCM-chitosan and OREC are coated on cellulose mats. Besides, wide angle X-ray diffraction and small angle X-ray diffraction are applied to investigate the crystalline of the composite mats and the interlayer distance of OREC, respectively. The antibacterial activity of the mats increases with the incorporation of OREC into LBL films.
authors: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China; School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors: Linbin
authors: L
authors: Jiang
authors: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China; School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors: Yuan
authors: Y
authors: Lu
authors: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China.
authors: Xingyun
authors: X
authors: Liu
authors: School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, China.
authors: Hu
authors: H
authors: Tu
authors: School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors: Jianwei
authors: J
authors: Zhang
authors: School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors: Xiaowen
authors: X
authors: Shi
authors: School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China. Electronic address: hbdeng@whu.edu.cn.
authors: Hongbing
authors: H
authors: Deng
authors: School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors: Yumin
authors: Y
authors: Du
mesh_terms: D000464:Alginates / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D048271:Chitosan / Q000031:analogs & derivatives* / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects; D008903:Minerals / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D058105:Polymerization; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000464:Alginates; D000538:Aluminum Silicates; D000900:Anti-Bacterial Agents; D008903:Minerals; C514968:carboxymethyl-chitosan; C546376:rectorite; D048271:Chitosan
keywords: Antibacterial activity; Layer-by-layer; Organic rectorite; Quaternized carboxymethyl chitosan; Sodium alginate