Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (669 KB bytes)

Title: Durability and mechanical properties of silane cross-linked wood thermoplastic composites

Author: Bengtsson, Magnus; Stark, Nicole M.; Oksman, Kristiina;

Date: 2007

Source: Composites science and technology. Vol. 67 (2007): pages 2728-2738.

Publication Series: Miscellaneous Publication

Description: In this study, silane cross-linked wood–polyethylene composite profiles were manufactured by reactive extrusion. These composites were evaluated regarding their durability and mechanical properties in comparison with two non-cross-linked wood– polyethylene composites. An addition of only 2% w/w of silane solution during manufacturing was enough to achieve almost 60% degree of cross-linking after curing. The cross-linked composites showed flexural toughness superior to the non-cross-linked composites. The cross-linked composites also absorbed less moisture during a boiling test in water and this was an indirect evidence of improved interfacial adhesion. After accelerated weathering for 1000–3000h the general trend was a decrease in flexural modulus and strength of both the non-cross-linked and cross-linked composites. The decrease in modulus seemed to be lower for the cross-linked composites while the decrease in strength seemed to be higher compared to the non-cross-linked composites. Weathering also resulted in a considerable colour fading of the composites. Water absorption–freeze–thaw cycling decreased the flexural modulus of non-cross-linked composites considerably while there was no statistical decrease in modulus for the cross- linked composites. There was only an insignificant decrease in strength for the composites after the water absorption–freeze–thaw cycling.

Keywords: Polymer matrix composites, mechanical properties, durability, extrusion, cross-linking, weathering, extrusion process, adhesion, wood plastic composites, composite materials, thermoplastic composites, silane, crosslinking, polymerization, polyethylene, elasticity, accelerated life testing, accelerated testing, strength, wood plastic materials, modulus of elasticity

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.



Bengtsson, Magnus; Stark, Nicole M.; Oksman, Kristiina 2007. Durability and mechanical properties of silane cross-linked wood thermoplastic composites. Composites Science and Technology. 67(13): 2728-2738.


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.