Preparation and properties of bacterial cellulose-ZnO/waterborne polyurethane composite films

被引：0
|
作者：
Wu J. [1 ]
Zeng W. [1 ]
Kuang M. [1 ]
Zhong C. [2 ]
机构：
[1] College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin
[2] State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 12期
关键词：
Bacterial cellulose; Composites; Modification; Waterborne polyurethane; ZnO;
D O I：
10.13801/j.cnki.fhclxb.20200407.001
中图分类号：
学科分类号：
摘要：
Bacterial cellulose-ZnO (BC-ZnO) composite particles were prepared through the hydrothermal synthesis method using BC as a template, using Zinc sulfate、NaOH and urea as raw materials. The results show that BC-ZnO composite particles are the novel brush-like structure with a size of 3-5 μm. BC filaments are wrapped in brush-like ZnO at a level of approximate 19wt%. The formation mechanism of the brush-like structure of the composite particles is explained. Bacteria cellulose-ZnO/waterborne polyurethane (BC-ZnO/WPU) composite film was obtained by introducing different contents of BC-ZnO composite particles into waterborne polyurethane by in-situ polymerization method, and the structure and performance of the composite film were characterized. SEM shows that composite particles are well dispersed in polyurethane. The properties reach the optimal when the proportion of BC-ZnO is 1.0wt%, the tensile strength is 84.6% higher than that of pure WPU; the water absorption is deceased from 16.5% to 4.9%; the addition of BC-ZnO improves the initial thermal stability of the composite film; the composite film shows good antibacterial properties. When the BC-ZnO content is 1.3wt%, the antibacterial rate against S. aureus exceeds 99% and the antibacterial rate against E. coli exceeds 85%. Copyright ©2020 Acta Materiae Compositae Sinica. All rights reserved.
引用
收藏
页码：3026 / 3034
页数：8
相关论文
共 31 条
  • [1] VANESA G P, VICTOR C, COLERA M, Et al., Water-borne polyurethane dispersions obtained with polycar-bonate of hexanediol intended for use as coatings[J], Progress in Organic Coatings, 71, 2, pp. 136-146, (2011)
  • [2] ARSHAD N, ZIA K M, JABEEN F, Et al., Synthesis, characterization of novel chitosan based water dis-persible polyurethanes and their potential deployment as antibacterial textile finish, International Journal of Biological Macromolecules, 111, pp. 485-492, (2018)
  • [3] LI J, CUI J C, YANG J Y, Et al., Reinforcement of graphene and its derivatives on the anticorrosive properties of waterborne polyurethane coatings, Composites Science and Technology, 129, pp. 30-37, (2016)
  • [4] LEIRE U, ANA A V, AINARA S, Et al., Hybrid and bio-compatible cellulose/polyurethane nanocomposites with water-activated shape memory properties, Carbohydrate Polymers, 216, pp. 86-96, (2019)
  • [5] WANG Y X, TIAN H F, ZHANG L N., Role of starch nanocrystals and cellulose whiskers in synergistic reinforcement of waterborne polyurethane, Carbohydrate Polymers, 80, 3, pp. 665-671, (2010)
  • [6] REN L F, GUO X D, ZHAO Y X, Et al., Synthesis and properties of waterborne polyurethane incorporated with phenolic acid grafted oligochitosan[J], Progress in Organic Coatings, 135, pp. 410-416, (2019)
  • [7] XU J C, JIANG Y, ZHANG T, Et al., Synthesis of UV-curing waterborne polyurethane-acrylate coating and its photopolymerization kinetics using FT-IR and photo-DSC methods[J], Progress in Organic Coatings, 122, pp. 10-18, (2018)
  • [8] WEN J T, SUN Z, XIANG J, Et al., Preparation and characteristics of waterborne polyurethane with various lengths of fluorinated side chains[J], Applied Surface Science, 494, pp. 610-618, (2019)
  • [9] GE Z, ZHOU S S, LUO Y J., Preparation and properties of nano-SiO<sub>2</sub>/organosilicon modified waterborne polyurethane composites, Acta Materiae Compositae Sinica, 31, 4, pp. 909-915, (2014)
  • [10] ZHAI L L, WANG Y, PENG F, Et al., Synthesis of TiO<sub>2</sub>-SiO<sub>2</sub>/waterborne polyurethane hybrid with amino-siloxane terminated via a sol-gel process, Materials Letters, 89, pp. 81-85, (2012)
1234