title: Synthesis of antibacterial film CTS/PVP/TiO2/Ag for drinking water system.
abstract: A CTS/PVP/TiO2/Ag functional film was prepared as an antibacterial composite used in storing drinking water. The orthogonal experiment showed that the optimal conditions for preparing membranes with best antibacterial activity and tensile strength are c(AgNO3)=0.08%, c(TiO2)=0.20%, c(CTS)=2.25%, and c(PVP)=3.00%. The FT-IR spectrum implies that hydrogen bands are formed between acetyl in PVP and hydroxyl in CTS molecule, and -NH and -OH of CTS have some interactions with sliver nano-particles (nano-Ags) which were reduced in situ. The SEM images show that the TiO2 particles are displayed on the surface and embedded in the film. And nano-Ags are further proved through XRD and SEM images. The DSC curves show that the film has a favorable compatibility and heat stability. In application study, it is proved that this film has sustainable antibacterial activity and is safe in use.
authors.affiliation: Department of Chemistry, College of Science, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.forename: Xue
authors.initials: X
authors.lastname: Bai
authors.forename: Hua
authors.initials: H
authors.lastname: Tian
authors.forename: Lvling
authors.initials: L
authors.lastname: Zhong
authors.forename: Cailian
authors.initials: C
authors.lastname: Ma
authors.forename: Yuanzhen
authors.initials: Y
authors.lastname: Zhou
authors.forename: Shuangli
authors.initials: S
authors.lastname: Chen
authors.forename: Dongliang
authors.initials: D
authors.lastname: Li
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D060766:Drinking Water / Q000737:chemistry / Q000382:microbiology*; D004926:Escherichia coli / Q000254:growth & development*; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry*; D011759:Pyrrolidines / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013449:Sulfonamides / Q000737:chemistry*; D013830:Thiadiazoles / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: C448308:2-(3-chloropropionylamino)-1,3,4-thiadiazole-5-sulfonamide; D000900:Anti-Bacterial Agents; D060766:Drinking Water; D008567:Membranes, Artificial; D011145:Polyvinyls; D011759:Pyrrolidines; D013449:Sulfonamides; D013830:Thiadiazoles; C505150:poly(N-vinylpyrrolidine); C009495:titanium dioxide; D012834:Silver; D014025:Titanium