Transparent polyurethane coating with synergistically enhanced antibacterial mechanism composed of low surface free energy and biocide

被引：37

作者：

Ji, Jiujiang ^{[1
,2
]}

Liu, Na ^{[1
,2
]}

Tian, Ye ^{[1
,2
]}

Li, Xiangyu ^{[1
,2
]}

Zhai, Huajun ^{[1
,2
]}

Zhao, Shuaiheng ^{[1
,2
]}

Liu, Yue ^{[1
,2
]}

Liu, Guojun ^{[3
]}

Wei, Yen ^{[1
,2
,4
,5
,6
]}

Feng, Lin ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Tsinghua Ctr Frontier Polymer Res, Beijing 100084, Peoples R China

[3] Queens Univ, Dept Chem, 90 Bader Lane, Kingston, ON K7L 3N6, Canada

[4] Chung Yuan Christian Univ, Dept Chem, Chungli 32023, Taiwan

[5] Chung Yuan Christian Univ, Ctr Nanotechnol, Chungli 32023, Taiwan

[6] Chung Yuan Christian Univ, Inst Biomed Technol, Chungli 32023, Taiwan

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 445卷

基金：

中国国家自然科学基金;

关键词：

Transparent; Quaternary ammonium salts modified; polysiloxanes; Polyurethane coating; Antibacterial; Self-renewability; NANOPARTICLES;

D O I：

10.1016/j.cej.2022.136716

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Recently, antibacterial coatings have gained great attention after the outbreak of COVID-19, thus durable transparent polyurethane (PU) coatings with anti-bacterial and anti-fingerprint performances are highly desired. In this work, the low surface free energy enables the hydroxyl-terminated polysiloxanes modified with quaternary ammonium salts (PQMS) enriched on the surface. The optimal PU-PQMS-40 % coating with the thickness of 15 mu m displayed 96 % light transmittance and can be adopted to diverse substrates. This resultant coating exhibits excellent antibacterial activity against Gram-negative E. coli (99.2 %) and Gram-positive S. aureus (98.6 %) because of the synergistically enhanced antibacterial mechanism of both low surface free energy (27.54 +/- 0.75 mJ.m(- 2)) and quaternary ammonium salts (QAs). It is noteworthy that this antibacterial PU coating is capable of retaining its properties even after being subjected to 210 cycles of abrasion tests, manifesting a superior self renewability. This coating system with combined features of transparency, antibacterial performance, chemical resistance, and durability make it a promising candidate for applications in the fields of electronic devices, automobile interiors, intelligent glass, and marine antifouling.

引用

页数：9

共 46 条

[1] Preventing mussel adhesion using lubricant-infused materials [J].