Hydrophilic hybrid SiO2:polyethylene glycol-3-isocyanato-propyltrietoxysilane nanocomposite films
Küçük Resim Yok
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
SiO2:polyethylene glycol (PEG)-3-isocyanato-propyltrietoxysilane (IPTES) hydrophilic films were prepared from PEG having various average molecular weights, namely 200, 400 and 600; SiO2 nanoparticles, and tetraethyl orthosilicate (TEOS) through sol-gel method. SiO2 nanoparticles were utilized in various amounts to enhance the mechanical properties and hydrophilic character of the films. Films were characterized by Fourier transformed infrared spectroscopy, field emission scanning electron microscopy, atomic force microscopy, adhesion test, humidity test and water contact angle (WCA) measurements. Thicknesses of the obtained films were about 800 nm. Incorporation of TEOS enhanced adhesion of film to substrate as well as improving stability of the film against water. WCA was seen to decrease, and porosity and surface roughness was seen to increase with increase in SiO2 nanoparticle content of the films. Increase in PEG molecular weight also resulted in a decrease in the WCA, thus WCA as low as 15 degrees was obtained. (C) 2012 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Hydrophilicity, Polyethylene glycol, Water contact angle, Sol-gel deposition, Silicon dioxide, Fourier transform infrared spectroscopy, Scanning electron microscopy, Composites
Kaynak
Thin Solid Films
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
522
