Effects of chemical treatments of hybrid fillers on the physical and thermal properties of wood plastic composites

• Published in: Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2010-10, Vol.41 (10), p.1491-1497
• Main Authors: Gwon, Jae Gyoung, Lee, Sun Young, Chun, Sang Jin, Doh, Geum Hyun, Kim, Jung Hyeun
• Format: Article
• Language: English
• Subjects: A. Wood; Applied sciences; B. Strength; Composites; Crystallization; D. Chemical analysis; E. Thermal analysis; Exact sciences and technology; Fibers; Fillers; Forms of application and semi-finished materials; Polymer industry, paints, wood; Polymer matrix composites; Talcs; Technology of polymers; Tensile strength; Thermal properties; Water absorption; Wood
• ISSN: 1359-835X; 1878-5840
• DOI: 10.1016/j.compositesa.2010.06.011

Hybrid filler reinforced composites are considered as a high performance materials, but limited numbers of researches on hybridizations of wood fibers and mineral fillers were reported. Generally, high amount of filler content in composites can lead to the reduction of interfacial adhesion between matrix polymer and fillers, and it limits their applications. In this study, we measured the changes of tensile strength, water absorption, and thermal properties of composites after chemical treatments to wood fibers and mineral fillers. Coupling agent had its own optimum amount for wood fibers and talc to obtain the highest tensile strength. Talc addition showed little effect of the tensile strength with alkali treated wood fibers. Talc addition and silane treatment showed opposite effects on water absorption. Melting enthalpy was decreased by addition of the fillers because of the reduced amount of the crystallizable resin and because of the interference of the fillers for crystallization process.