Naslov
Optimiranje mehaničkih svojstava mješavine poliuretana i poli(vinil-acetata) dodatkom punila smjese neobrađenog i predobrađenog kalcijevog karbonata
(Optimization of PUR/PVAC mechanical properties by addition of mixture of untreated and pretreated CaCO3 filler)

Autori
Vrsaljko, Domagoj ; Leskovac, Mirela ; Buhin, Zrinka ; Lučić Blagojević, Sanja ; Kovačević, Vera

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Polimerni materijali i dodatci polimerima / Čatić, Igor - Zagreb : Društvo za plastiku i gumu, 2009, 103-109

Skup
Polimerni materijali i dodatci polimerima

Mjesto i datum
Zagreb, Hrvatska, 19.11.2009. - 20.11.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
polimerna mješavina; kontaktni kut; faktor kvašenja; predobrada površine punila
(polymer blend; contact angle; wetting coefficient; filler surface pre-treatment)

Sažetak
Polyurethane (PUR) and poly(vinyl acetate) (PVAC) are partially miscible polymers. The aim of this study was to investigate the influence of untreated and stearic acid surface pretreated calcium carbonate (CaCO3) nanofiller on the properties of PUR/PVAC polymer blends. A set of filler mixtures which have diverse values of surface free energy have been prepared by mixing of two commercial nanofillers (U1 – untreated CaCO3 and U1S2 – stearic acid pre-treated CaCO3) in different ratios. Surface properties of PUR, PVAC, U1 and U1S2 have been defined by determination of surface free energy. Adhesion between filler and polymer in the polymer blend, as well as filler position (in regard to the polymer phases) are predicted on the basis of calculated adhesion parameters (interfacial free energy - γ, spreading coefficient – S and work of adhesion – W) and wetting coefficient ωa. Thermal and mechanical properties are determined by DSC and tensile tests.

Izvorni jezik
Hrvatski

Znanstvena područja
Kemijsko inženjerstvo

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