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Cellulose nanofibrils (CNFs) and nanoclay (NC) were selected to determine the effects of different fillers on the characterization of poly(vinyl acetate) (PVA). Characterizations of the PVA composites obtained were studied by thermogravimetric analysis (TGA/DTG), scanning electron microscopy (SEM) and the lap joint shear strength (LJSS). The morphological studies revealed that some clumpings were observed in SEM images for 1%, 2%, and 4% wt loadings for CNFs and NC fillers. Dispersed particle orientation morphology and the wave sheets appear to be uniformly distributed on the surface of the composites. Seen as the effects of fillers on the thermal stability, the results showed that NC has a greater effect than CNFs, depending on the loading rates of fillers. Lap joint shear strength generally increased after adding CNFs and NC to PVA matrix. Thus, it can be said that PVA has higher bonding performance and can be used in applications requiring higher bonding strength.Za istraživanje utjecaja različitih punila na svojstva poli(vinil acetata) (PVA) odabrana su celulozna nanovlakna (CNFs) i nanočestice gline (NC). Svojstva PVA kompozita istražena su termoanalizom (TGA/DTG), skeniranjem elektronskim mikroskopom (SEM) i određivanjem smicajne čvrstoće spoja (LJSS). Morfološke su studije pokazale da su skupine čestica zabilježene na SEM slikama pri težinskom udjelu CNFs i NC punila od 1, 2 i 4 %. Raspršena morfologija orijentacije čestica i valovi ravnomjerno su raspoređeni na površini kompozita. Iz analize utjecaja punila na termičku stabilnost može se zaključiti da NC ima veći utjecaj od CNFs-a, ovisno o težinskom udjelu punila. Smicajna čvrstoća spoja općenito se povećava nakon dodavanja CNFs i NC punila na PVA matricu. Prema tome, može se reći da PVA s CNFs i NC punilom ima veću učinkovitost lijepljenja i može se primijeniti u aplikacijama koje zahtijevaju veću čvrstoću lijepljenja

The Effects of Poly(vinyl acetate) Filled with Nanoclay and Cellulose Nanofibrils on Adhesion Strength of Poplar and Scots Pine Wood