In-situ fabrication of polyelectrolyte-CSH superhydrophilic coatings via layer-by-layer assembly

被引：27

作者：

Guo, Hongxia ^{[1
]}

Sun, Pengzhi ^{[1
]}

Liang, Yucang ^{[2
]}

Ma, Yiwen ^{[1
]}

Qin, Zhenping ^{[3
]}

Cui, Suping ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Univ Tubingen, Inst Anorgan Chem, D-72076 Tubingen, Germany

[3] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2014年 / 253卷

关键词：

Superhydrophilic coatings; LbL assembly; Polyelectrolyte multilayer (PEM); Superwetting behavior; CALCIUM-SILICATE-HYDRATE; TIO2; THIN-FILMS; C-S-H; ANTIFOGGING COATINGS; FACILE FABRICATION; REFRACTIVE-INDEX; HOLLOW SPHERES; DRUG-DELIVERY; SURFACES; NANOPARTICLES;

D O I：

10.1016/j.cej.2014.05.025

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Superhydrophilic and antireflective coatings were fabricated via the layer-by-layer (LbL) assembly method with in situ precipitation of sodium silicate and calcium acetate on quartz or glass slide substrate. The influences of assembly conditions on the growth behavior, surface topologies, zeta potentials, wettability, antifogging behavior and transmittances of the multilayer coatings have been investigated in details. The results indicated that more than three deposition cycles with 3.27 g/L calcium silicate hydrates (CSH) solution were optimal condition for the fabrication of a superhydrophilic and antireflective coating structure of poly(ethyleneimine)/poly(sodium 4-styrenesulfonate) (PEI/PSS-CSH)(3) with 98.0% of transmittance, and even 99.4% of (PEI/PSS-CSH)(4) multilayer film. Additionally, the 3.0 bilayers of PEI-PSS/CSH coatings exhibited superior antifogging characteristics. This in situ formation of CSH nanoparticles in the LbL film offers a potential strategy to fabricate multifunctional films for a variety of technological applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：198 / 206

页数：9

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