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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Functionalized Cellulose Nanocrystals: A Potential Fire Retardant for Polymer Composites

Source: Polymers. 11(8). 7 p.

Author(s)Bajwa, Dilpreet ; Rehovsky, Chad ; Shojaeiarani, Jamileh ; Stark, Nicole ; Bajwa, Sreekala ; Dietenberger, Mark A.

Publication Year: 2019  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-2B   FPL-4716-2A

Abstract: The fammability of synthetic thermoplastic polymers has been recognized as an increasingly important safety problem. The goal of this study was to evaluate a green and safe fre-retardant system comprising of cellulose nanocrystals (CNC) and zinc oxide nanoparticles (ZnO). CNCs coated with nano ZnO were incorporated in the high-density polyethylene polymer (HDPE) matrix at different concentrations. Fire testing results of different formulations of HDPE containing 0.4 to 1.0% zinc oxide coated CNC exhibited a substantial decrease in the average mass loss, peak heat release rate and total smoke release. The time to ignition exhibited a positive correlation with CNC-ZnO concentration. Modest improvement in the fexural strength and moduli of composites was noticed validating no adverse effects of CNC-ZnO complex. The transmission electron microscopy further confrmed dispersion of nanoparticles as well as the presence of some nanoparticle aggregates in the matrix. The uniform dispersion of CNC-ZnO complex is expected to further improve fre and mechanical properties of polymer.

Keywords: Fire retardant; high-density polyethylene; nano zinc oxide; cellulose nanocrystals; thermal Stability

Publication Review Process: Formally Refereed

File size: 2,048 kb(s)

Date posted: 12/20/2019

This publication is also viewable on Treesearch:  view
RITS Product ID: 96763
Current FPL Scientists associated with this product (listed alphabetically)
Dietenberger, Mark A.
Research General Engineer
Stark, Nicole M.
Research Chemical Engineer

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