Naslov
Influence of filler surface pretreatment on filler localization in polymer blends

Autori
Vrsaljko, Domagoj

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
POLYCHAR 20 World Forum on Advanced Materials - Book of Abstracts / Rogošić, Marko ; Macan, Jelena - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2012, 220-220

ISBN
978-953-6470-57-0

Skup
POLYCHAR 20 World Forum on Advanced Materials

Mjesto i datum
Dubrovnik, Hrvatska, 26.03.2012. - 30.03.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
polymer blends; interface

Sažetak
Creation of novel materials by blending standard polymers is common and successful method if polymers are compatible. In other cases effective compatibilisation should be provided. Polyurethane (PUR) and poly(vinyl acetate) (PVAC) are partially miscible polymers. The objective of the study is to investigate the influence of stearic acid pretreatment of calcium carbonate (CaCO3) nanofiller on the selective localization of the filler inside PUR/PVAC polymer blend and to investigate a possibility to use inorganic filler as a polymer compatibilizer. A series of CaCO3 filler mixtures which have diverse values of surface free energy has been prepared by mixing of two fillers (U1 – untreated CaCO3 and U1S2 – stearic acid pretreated CaCO3) in diverse ratios. Surface properties of PUR, PVAC, U1 and U1S2 are characterized by determination of surface free energy. Interactions between polymer and filler, as well as filler selective localization (in regard to polymer domains) are predicted on the basis of calculated adhesion parameters (interfacial free energy – γ, spreading coefficient – S and work of adhesion – W) and wetting parameter ωa. Thermal and mechanical properties are determined by DSC and tensile tests, respectively. This study confirms that filler surface pretreatment influences selective localization of the filler inside PUR/PVAC polymer blends, but due to several factors (filler-polymer interactions, polymer viscosity, mixing procedure) is not correctly predicted by calculating wetting parameter ωa.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

POVEZANOST RADA