title: Structure and properties of silk fibroin grafted carboxylic cotton fabric via amide covalent modification.
abstract: A novel eco-friendly production of silk fibroin-grafted carboxylic cotton fabrics without using any crosslinking agents was developed via the reaction of silk fibroin with oxidized cotton. The effect of reaction parameters on mechanical properties of oxidized fabrics and graft add-on of silk fibroin in grafted fabrics was examined. The results showed that appropriate oxidation time of HNO3/H3PO4-NaNO2mixture and grafting time of fibroin were 45min and 2h respectively. FTIR analysis of grafted sample indicated that the CN amido bond was generated through the reaction between primary amines in silk fibroin and carboxyl groups in oxidized cotton, which was further confirmed by XPS spectra. The grafted fabrics were also evaluated for physical properties like tensile strength, wrinkle recovery angle, moisture regain and yellowness index. Cactus flavonoid coated on grafted fabric through treatment with flavonoid extract of cactus, such treated fabric exhibited a highly inhibitory effect against both Staphylococcus aureus and Escherichia coli bacteria.
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China. Electronic address: xuyunhui@ahau.edu.cn.
authors.forename: Yunhui
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Biotechnology Center, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Dingding
authors.initials: D
authors.lastname: Chen
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Zhaofang
authors.initials: Z
authors.lastname: Du
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Jifeng
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei, Anhui 230036, China.
authors.forename: Fengxia
authors.initials: F
authors.lastname: Peng
mesh_terms: D000577:Amides / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D032561:Cotton Fiber; D004926:Escherichia coli / Q000187:drug effects; D005349:Fibroins / Q000737:chemistry* / Q000494:pharmacology; D047011:Silk / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects; D013784:Textiles
chemical_list: D000577:Amides; D000900:Anti-Bacterial Agents; D047011:Silk; D005349:Fibroins
keywords: Antibacterial activity; Cactus flavonoid extract; Carboxylic cotton fabric; Grafting; Silk fibroin