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Journal of Nanomaterials
Volume 2017 (2017), Article ID 9689035, 9 pages
https://doi.org/10.1155/2017/9689035
Research Article

Functional Surface Coating on Cellulosic Flexible Substrates with Improved Water-Resistant and Antimicrobial Properties by Use of ZnO Nanoparticles

1School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510640, China
2Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
3State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
4Collaborative Innovation Center for Guangxi Sugar Industry, Guangxi, Nanning 530004, China

Correspondence should be addressed to Zhiwei Wang; nc.ude.uxg@iewihzgnaw

Received 28 October 2016; Accepted 14 December 2016; Published 19 January 2017

Academic Editor: Siya Huang

Copyright © 2017 Xiaofei Tian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

It is of significant interest to create functional flexible surfaces that simultaneously exhibit high water-resistance and antimicrobial performances for medical or packaging applications. This study reported a synthesis of functional surface coating on flexible cellulose materials (filter papers) with ZnO nanoparticles and binds of renewable soybean oil-based polymers. Self-aggregation of ZnO nanoparticles could form ZnO particles with two regular morphological patterns. Rather than a rod-like morphology, a flower-like ZnO benefited a promotion of surface hydrophobicity. Moreover, surface with the flower-like ZnO showed a 51.6% promotion on antimicrobial activities against Gram-negative bacteria (E. coli) than the rod-like ZnO. A low binder/ZnO ratio of 0.2 led to a remarkable improvement on water repelling performances without negative effects on a coating adhesion of ZnO. Under this condition, a hydrophobic surface was achieved with a large static contact angle of 138° when applying ZnO nanoparticles at a dosage of 3 g m−2.