Preparation and characterization of poly(Urethane-siloxane)/titanium-dioxide nanocomposites
Priprema i karakterizacija poli(Uretan-siloksan)/titan-dioksid nanokompozita
Authors
Stefanović, Ivan
Dostanić, Jasmina

Lončarević, Davor

Vasiljević-Radović, Dana

Ostojić, Sanja

Marković, Smilja B.

Pergal, Marija

Article (Published version)
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Show full item recordAbstract
This work is focused on preparation of poly(urethane-siloxane)/titanium-dioxide nanocomposites (PUSNs) with enhanced features. PUSNs were prepared by the in situ polymerization reaction using titanium-dioxide as a nano-filler in different amounts (1, 2, 3 and 5 wt.%) with respect to the poly(urethane-siloxane) (PUS) matrix. PUS copolymer was based on α,ω-dihy-droxy-ethoxypropyl-poly(dimethylsiloxane), 4,4’-methylenediphenyldiisocyanate and 1,4-bu-tanediole. In order to investigate the influence of TiO 2 content on the structure, UV resistance, thermal properties, hydrophobicity and morphology of the prepared PUSNs, FTIR spectroscopy, UV-Vis diffuse-reflectance spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle measurements, surface free energy (SFE) analysis, water absorption, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were performed. The PUSNs showed excellent UV resistance, high hydrophobicity, low surface ...free energy and also higher thermal stability and rougher surface and cross-section relief structure as compared to the pure PUS copolymer. Based on the obtained results it can be concluded that prepared PUSNs could be potentially used as protective coatings. © 2019, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.
Keywords:
morphology / nanocomposites / poly(dimethylsiloxanes) / polyurethanes / thermal properties / titanium-dioxideSource:
Hemijska Industrija, 2019, 73, 1, 13-24Publisher:
- Association of the Chemical Engineers of Serbia
Projects:
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
DOI: 10.2298/HEMIND180530002S
ISSN: 0367-598X; 2217-7426