Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

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

Publication Information

View PDF (6.0 MB bytes)

Title: Highly transparent and toughened poly(methyl methacrylate) nanocomposite films containing networks of cellulose nanofibrils

Author: Dong, Hong; Sliozberg, Yelena R.; Snyder, James F.; Steele, Joshua; Chantawansri, Tanya L.; Orlicki, Joshua A.; Walck, Scott D.; Reiner, Richard S.; Rudie, Alan W.;

Date: 2015

Source: ACS Appl. Mater. Interfaces 2015, 7. pp. 25464-25472

Publication Series: Scientific Journal (JRNL)

Description: Cellulose nanofibrils (CNFs) are a class of cellulosic nanomaterials with high aspect ratios that can be extracted from various natural sources. Their highly crystalline structures provide the nanofibrils with excellent mechanical and thermal properties. The main challenges of CNFs in nanocomposite applications are associated with their high hydrophilicity, which makes CNFs incompatible with hydrophobic polymers. In this study, highly transparent and toughened poly(methyl methacrylate) (PMMA) nanocomposite films were prepared using various percentages of CNFs covered with surface carboxylic acid groups (CNF-COOH). The surface groups make the CNFs interfacial interaction with PMMA favorable, which facilitate the homogeneous dispersion of the hydrophilic nanofibrils in the hydrophobic polymer and the formation of a percolated network of nanofibrils. The controlled dispersion results in high transparency of the nanocomposites. Mechanical analysis of the resulting films demonstrated that a low percentage loading of CNF-COOH worked as effective reinforcing agents, yielding more ductile and therefore tougher films than the neat PMMA film. Toughening mechanisms were investigated through coarse-grained simulations, where the results demonstrated that a favorable polymer-nanofibril interface together with percolation of the nanofibrils, both facilitated through hydrogen bonding interactions, contributed to the toughness improvement in these nanocomposites.

Keywords: cellulose nanofibrils, poly(methyl methacrylate), nanocomposites, interfacial interactions, mechanical properties, coarse-grained simulation

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.

XML: View XML

Citation:


Dong, Hong; Sliozberg, Yelena R.; Snyder, James F.; Steele, Joshua; Chantawansri, Tanya L.; Orlicki, Joshua A.; Walck, Scott D.; Reiner, Richard S.; Rudie, Alan W. 2015. Highly transparent and toughened poly(methyl methacrylate) nanocomposite films containing networks of cellulose nanofibrils. ACS Applied Materials and Interfaces. 7: 25464-25472.

 


 [ 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.