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Title: A Cost-Effective and Environmentally-Friendly Method to Improve Surface Compatibility of Cellulose Nanofibrils (CNF) in Hydrophobic Matrix Materials

Abstract

Cellulose nanofibrils (CNF) are strong, light weight, and are fabricated from renewable resources, which make CNF a promising reinforcing filler material for light weight composites. Currently, CNF has two main deficiencies: 1) There are a large number of hydroxyl groups, which produce strong hydrogen bound interactions between CNFs that leads to a gel-like structure with >95% of hydrogen-bounded water when produced. The water removal process costs energy and affects the mechanical properties of the nanomaterials. 2) CNF’s high hydrophilicity limits its uses in composites as they can form agglomerates in hydrophobic matrix materials. These fibers are of particular importance in reducing the weight, and therefore energy consumption, in composite materials used on vehicles. The majority of polymer resins used in automotive composites are hydrophobic and dispersion of CNF in these materials is a barrier to adoption. The overall objective of this program was to develop a process to make CNF compatible with hydrophobic polymers to manufacture light weight composites. In Phase I, Nano Terra has demonstrated feasibility of a cost effective and environmentally friendly surface modification method. The resulting CNF reinforced thermoplastic composites will be competitive on a cost per performance basis with glass fiber and moderate-strength carbon fiber reinforcementsmore » for use in high volume transportation equipment. These composites will increase the percentage of renewable materials within these applications, will reduce the overall weight of the composite, and if used in automotive applications, could significantly reduce the amount of CO2 produced by the vehicle.« less

Authors:
 [1]
  1. Nano Terra, Inc., Cambridge, MA (United States)
Publication Date:
Research Org.:
Nano Terra, Inc., Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
University of Maine
OSTI Identifier:
1482169
Report Number(s):
DOE-NANOT-17828
DOE Contract Number:  
SC0017828
Type / Phase:
SBIR (Phase I)
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Li, Xinhua. A Cost-Effective and Environmentally-Friendly Method to Improve Surface Compatibility of Cellulose Nanofibrils (CNF) in Hydrophobic Matrix Materials. United States: N. p., 2018. Web.
Li, Xinhua. A Cost-Effective and Environmentally-Friendly Method to Improve Surface Compatibility of Cellulose Nanofibrils (CNF) in Hydrophobic Matrix Materials. United States.
Li, Xinhua. Tue . "A Cost-Effective and Environmentally-Friendly Method to Improve Surface Compatibility of Cellulose Nanofibrils (CNF) in Hydrophobic Matrix Materials". United States.
@article{osti_1482169,
title = {A Cost-Effective and Environmentally-Friendly Method to Improve Surface Compatibility of Cellulose Nanofibrils (CNF) in Hydrophobic Matrix Materials},
author = {Li, Xinhua},
abstractNote = {Cellulose nanofibrils (CNF) are strong, light weight, and are fabricated from renewable resources, which make CNF a promising reinforcing filler material for light weight composites. Currently, CNF has two main deficiencies: 1) There are a large number of hydroxyl groups, which produce strong hydrogen bound interactions between CNFs that leads to a gel-like structure with >95% of hydrogen-bounded water when produced. The water removal process costs energy and affects the mechanical properties of the nanomaterials. 2) CNF’s high hydrophilicity limits its uses in composites as they can form agglomerates in hydrophobic matrix materials. These fibers are of particular importance in reducing the weight, and therefore energy consumption, in composite materials used on vehicles. The majority of polymer resins used in automotive composites are hydrophobic and dispersion of CNF in these materials is a barrier to adoption. The overall objective of this program was to develop a process to make CNF compatible with hydrophobic polymers to manufacture light weight composites. In Phase I, Nano Terra has demonstrated feasibility of a cost effective and environmentally friendly surface modification method. The resulting CNF reinforced thermoplastic composites will be competitive on a cost per performance basis with glass fiber and moderate-strength carbon fiber reinforcements for use in high volume transportation equipment. These composites will increase the percentage of renewable materials within these applications, will reduce the overall weight of the composite, and if used in automotive applications, could significantly reduce the amount of CO2 produced by the vehicle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Technical Report:
This technical report may be released as soon as November 15, 2022
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

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