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 (137 KB)


Raman analysis and mapping of cellulose nanocrystal-polypropylene composite

Author: Agarwal, Umesh P.; Sabo, R.; Reiner, Richard S.; Clemons, Craig Merrill; Rudie, Alan W.;

Date: 2009

Source: Proceedings of the 15th International Symposium on Wood, Fiber and Pulping Chemistry, Oslo, Norway, (July 15-18, 2009). Oslo, Norway : Congress-Conference AS, 2009: Paper no. P-131_ISWFPC_Nano_composite_mapping

Publication Series: Miscellaneous Publication


In this study, Raman spectroscopy was used to investigate the spatial distribution of cellulose nanocrystals (CNCs) in extruded polypropylene (PP) filaments. Raman maps, based on cellulose and PP bands, obtained at 1 micron spatial resolution showed that the CNCs were aggregated to various degrees in the PP matrix. Of the three composites analyzed, two showed clear existence of phase separated regions – Raman images with PP strong and cellulose absent or vice versa. For the third composite, the situation was slightly improved but a clear transition interface between the PP-abundant and CNC-abundant regions was observed indicating that the CNC remained poorly dispersed. Nevertheless, tensile and modulus tests of the composites indicated up to 10% improvement compared to PP alone.

Keywords: Nanotechnology, cellulose fibers, cellulose, chemical composition, composite materials, mechanical properties, fiber-reinforced plastics, fibrous composites, thermoplastic composites, elasticity, modulus of elasticity, nanostructured materials, crystallization, Raman spectroscopy, wood-plastic composites, polypropylene, extrusion process, tensile strength, nanocomposites, nanocrystals, wood-plastic materials

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.



Agarwal, U.P.; Sabo, R.; Reiner, R.S.; Clemons, C.M.; Rudie, A.W. 2009. Raman analysis and mapping of cellulose nanocrystal-polypropylene composite. In: Proceedings of 15th international symposium on wood, fiber and pulping chemistry. 2009 June 15-18; Oslo, Norway: Congress-Conference AS, P-131, 4 p., limited availability. or


 [ 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.