Abstract
In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was accomplished and that the matrix-fiber bond was established. The SEM image of the breakage surface has affirmed the improved adhesion between the fibers and the polymer in the specimen with modified wood fibers. The bond improvement between the wood fibers and the matrix results in increased hardness and a better distribution of strain within the composite. High speed impact testing results have shown that the specimen with the bonding agent can increase the absorbed energy six times when compared to the pure PMMA specimen.
Highlights
Uzorci su fiksirani nosačima unutrašnjeg prečnika 40 mm, sa primenjenim pritiskom od 0.55 MPa
Slika 3 - Dijagram energija- vreme za uzorke: 1) čist PMMA, 2)PMMA-drvo, 3) PMMA-drvo sa MPTMS
Po prvi put je korišćena modifikacija drvenih vlakana MPTMS zbog transparentnosti i otpornosti na zapaljivost
Summary
Kao polimerna matrica korišćen je poli- (metil metakrilat) (PMMA), (Chi-Mei, Kina). Aceton (Zorka Farma, Srbija) je korišćen kao rastvarač u PMMA rastvoru. Vlaknasto ojačanje u PMMA matrici dobijeno je upotrebom mehanički samlevene drvo-papir pulpe (drvena vlakna) (fabrika kartona Umka). Kao agens za modifikaciju površine korišćen je (3-Mercaptopropil) trimetoksisilan (MPTMS) (“Sigma-Aldrich, Co.”)
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