PLA/wood biocomposites: Improving composite strength by chemical treatment of the fibers

R. Csizmadia, G. Faludi, K. Renner, J. Móczó, B. Pukánszky

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A resol type phenolic resin was prepared for the impregnation of wood particles used for the reinforcement of PLA. A preliminary study showed that the resin penetrates wood with rates depending on the concentration of the solution and on temperature. Treatment with a solution of 1 wt% resin resulted in a considerable increase of composite strength and decrease of water absorption. Composite strength improved as a result of increased inherent strength of the wood, but interfacial adhesion might be modified as well. When wood was treated with resin solutions of larger concentrations, the strength of the composites decreased, first slightly, then drastically to a very small value. A larger amount of resin results in a thick coating on wood with inferior mechanical properties. At large resin contents the mechanism of deformation changes; the thick coating breaks very easily leading to the catastrophic failure of the composites at very small loads.

Original languageEnglish
Pages (from-to)46-53
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume53
DOIs
Publication statusPublished - 2013

Fingerprint

Wood
Resins
Fibers
Composite materials
Coatings
Phenolic resins
Water absorption
Impregnation
Reinforcement
Adhesion
Mechanical properties
Temperature

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Fiber/matrix bond
  • B. Mechanical properties
  • C. Micro-mechanics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

Cite this

PLA/wood biocomposites : Improving composite strength by chemical treatment of the fibers. / Csizmadia, R.; Faludi, G.; Renner, K.; Móczó, J.; Pukánszky, B.

In: Composites Part A: Applied Science and Manufacturing, Vol. 53, 2013, p. 46-53.

Research output: Contribution to journalArticle

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