Naslov
Rheology and Morphology of Poly(Vinyl Acetate)+ Calcite Films

Autori
Kovačević, Vera ; Lučić, Sanja ; Hace, Drago ; Glasnović, Antun

Izvornik
Polymer engineering and science (0032-3888) 36 (1996), 8; 1134-1139

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Calcite; mechanical behaviour; particle size distribution; Poly(vinyl acetate)composites; rheological behaviour

Sažetak
We have studied mechanical and rheological behavior of poly(vinyl acetate) (PVAc) composites filled with calcite as a function of filler particle geometry, particle size distribution, and active surface area. Detailed morphological characteristic were investigated. Tensile properties of PVAc composites were evaluated in the composition range 5-20 wt% calcite. The elongation at break descreases as consequence of matrix mobility restriction by filler particles. By contrast, the strenght at break increases as a result of fewer stress concentration points produced by small calcite particles. Large calcite particles decrease the strength of the PVAc composite because of lack of structural continuity. Failure is then dominated by the dewetting. Understanding the deformation as it relates to structure, mechanism of failure, and strength of interactions makes development of improved PVAc composites for adhesives possible.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA