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http://dx.doi.org/10.6111/JKCGCT.2010.20.4.168

Characterization of superhydrophilic thin films fabricated by a layer-bylayer self-assembly method  

Kim, Jin-Ho (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Material Center)
Hwang, Jong-Hee (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Material Center)
Lim, Tae-Young (Korea Institute of Ceramic Engineering and Technology, Electronic & Optic Material Center)
Jang, Jang-Hoon (Department of Ceramic Engineering, Gangneung-Wonju National University)
Kim, Sae-Hoon (Department of Ceramic Engineering, Gangneung-Wonju National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.20, no.4, 2010 , pp. 168-172 More about this Journal
Abstract
Superhydrophilic thin film consisted of positively charged poly (allylamine hydrochloride) (PAH) and negatively charged poly (acrylic acid) (PAA) was fabricated by a layer-by-layer (LBL) self-assembly. Glutaraldehyde (GA) was used in order to increase an adhesion hardness by amine-aldehyde reaction. The surface morphology, thickness, transmittance, water contact angle and adhesion hardness of PAH/PAA thin film with or without GA were measured. The adhesion hardness of PAH/PAA thin film with GA deposition increased over 2 times although the film thickness of PAH/GA/PAA decreased than that of PAH/PAA thin film. The increase of adhesion hardness by amine-aldehyde reaction between PAH and GA was measured by fourier transform infrared (FT-IR) spectroscopy. Fabricated PAH/PAA and PAH/GA/PAA thin films showed water contact angel under $5^{\circ}$ and high transmittance over 91.3% at 550 nm.
Keywords
Polyelectrolyte; Layer-by-layer (LBL); Superhydrophilic; Contact angle;
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