title: Preparation and antibacterial property of waterborne polyurethane/Zn-Al layered double hydroxides/ZnO nanocomposites.
abstract: In this work, a novel environmental-friendly waterborne polyurethane/ZnAl-layered double hydroxides/ZnO nanoparticles composite (WPU/ZnAl-LDHs/ZnO) was synthesized via in-situ polymerization. ZnAl-LDHs and ZnAl-LDHs/ZnO were synthesized by refluxing in an oil bath. In order to disperse ZnAl-LDHs/ZnO homogeneously into WPU matrix, ZnAl-LDHs/ZnO was firstly functionalized by isophorone diisocyanate. The incorporated content of ZnAl-LDHs/ZnO in the composite has profound effect on such physical properties as mechanical strength, thermal stability and water swelling. It is demonstrated that appropriate amount of ZnAl-LDHs/ZnO with good dispersion in the WPU matrix significantly improves the physical performance of the composites. Finally, the antibacterial activity of the composite was tested against G(-) Escherichia coli and G(+) Staphylococcus aureus. The results indicate that WPU incorporated with ZnAl-LDHs/ZnO shows strong antibacterial activity upon contact.
authors: School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, People's Republic of China.
authors: Wei-De
authors: WD
authors: Zhang
authors: Yun-Min
authors: YM
authors: Zheng
authors: Yang-Sen
authors: YS
authors: Xu
authors: Yu-Xiang
authors: YX
authors: Yu
authors: Qing-Shan
authors: QS
authors: Shi
authors: Lihong
authors: L
authors: Liu
authors: Hong
authors: H
authors: Peng
authors: Yousheng
authors: Y
authors: Ouyang
mesh_terms: D000536:Aluminum Hydroxide / Q000008:administration & dosage* / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000528:radiation effects; D018407:Bacterial Physiological Phenomena / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D008422:Materials Testing; D053758:Nanoparticles / Q000008:administration & dosage* / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D015034:Zinc Oxide / Q000008:administration & dosage* / Q000737:chemistry
chemical_list: D000900:Anti-Bacterial Agents; D011140:Polyurethanes; D014867:Water; D000536:Aluminum Hydroxide; D015034:Zinc Oxide