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Cellulose nanocrystal-reinforced poly(5-triethoxysilyl-2-norbornene) composites

Journal Article · · Polymer Chemistry
DOI:https://doi.org/10.1039/c9py00963a· OSTI ID:1595332
 [1];  [2];  [2];  [3]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Univ. of Tennessee
  2. Univ. of Tennessee, Knoxville, TN (United States)
  3. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Here, we demonstrate the reinforcement of a previously inaccessible norbornene-silane with a stiff, bio-based nanofiller. Poly(5-triethoxysilyl-2-norbornene) (PTESN), a glassy and thermally stable polymer, was combined with cellulose nanocrystals (CNCs) and solvent cast from toluene to form reinforced materials. Composite films showed excellent translucency and no visible aggregation, which was supported by scanning electron micrographs that showed no signs of CNC aggregation within the polymer matrix. Reinforcement was evident at the moderate loading of 5 wt% CNC, showing a statistically significant enhancement for Young's modulus and even greater reinforcement for 20 wt% CNC loading for Young's modulus (540 MPa vs. 970 MPa) and storage modulus at 25 °C (400 MPa vs. 1200 MPa). We anticipate that there is a strong interaction between the polymer and CNC filler based upon the increase of thermal degradation temperature of the CNCs increasing, for example from 278 °C to 295 °C at 10 wt% CNCs. These interactions were probed via solid-state NMR, which suggests that no covalent bonding occurs between the triethoxylsilyl substituents of the polymer and the CNCs. We therefore hypothesize that hydrogen bonding interactions between PTESN and CNCs are responsible for the increased thermal stability and reinforcement of the polymer material.
Research Organization:
Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
SC0018179
OSTI ID:
1595332
Alternate ID(s):
OSTI ID: 1566264
Journal Information:
Polymer Chemistry, Journal Name: Polymer Chemistry Journal Issue: 2 Vol. 11; ISSN PCOHC2; ISSN 1759-9954
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (28)

Preparation of poly(styrene- co -hexylacrylate)/cellulose whiskers nanocomposites via miniemulsion polymerization journal December 2009
Fabrication and Properties of Polyethylene/Cellulose Nanocrystal Composites journal August 2016
Reinforcing Poly(ethylene) with Cellulose Nanocrystals journal September 2014
Studies of interactions between silane coupling agents and cellulose fibers with liquid and solid-state NMR journal June 2007
Mechanical percolation in cellulose whisker nanocomposites journal October 1997
Synthesis and characterization of mechanically flexible and tough cellulose nanocrystals–polyacrylamide nanocomposite hydrogels journal February 2013
A comparative guide to controlled hydrophobization of cellulose nanocrystals via surface esterification journal March 2016
Cellulose-based nanocomposites prepared via mini-emulsion polymerization: Understanding the chemistry of the nanocellulose/matrix interface journal April 2014
Investigation on the effect of cellulosic nanoparticles’ morphology on the properties of natural rubber based nanocomposites journal April 2010
A detailed investigation into the gas permeation properties of addition-type poly(5-triethoxysilyl-2-norbornene) journal August 2017
Tensile and thermal properties of nanocellulose-reinforced poly(vinyl alcohol) nanocomposites journal January 2011
Molecular dynamics of poly(styrene-co-2-ethyl hexylacrylate) copolymer/cellulose nanocrystals nanocomposites investigated by dielectric relaxation spectroscopy: Effect of the silane content journal December 2016
Cellulose nanocrystal: A promising toughening agent for unsaturated polyester nanocomposite journal January 2015
Dielectric properties of nanocomposites based on cellulose nanocrystals (CNCs) and poly(styrene-co-2-ethyl hexylacrylate) copolymer journal September 2017
Surface-modified cellulose nanocrystals for biobased epoxy nanocomposites journal January 2018
Polymer Nanocomposites with Cellulose Nanocrystals Featuring Adaptive Surface Groups journal January 2017
Accessing Siloxane Functionalized Polynorbornenes via Vinyl-Addition Polymerization for CO 2 Separation Membranes journal June 2016
CP/MAS 13 C NMR Study of Cellulose and Cellulose Derivatives. 1. Complete Assignment of the CP/MAS 13 C NMR Spectrum of the Native Cellulose journal June 2002
Nonflocculating and Chiral-Nematic Self-ordering of Cellulose Microcrystals Suspensions in Nonpolar Solvents journal October 2000
Glassy Polynorbornenes with Si–O–Si Containing Side Groups. Novel Materials for Hydrocarbon Membrane Separation journal November 2013
Biobased Nanocomposites Prepared by In Situ Polymerization of Furfuryl Alcohol with Cellulose Whiskers or Montmorillonite Clay journal November 2008
Light-Healable Supramolecular Nanocomposites Based on Modified Cellulose Nanocrystals journal February 2013
Current characterization methods for cellulose nanomaterials journal January 2018
Alkoxysilyl functionalized polynorbornenes with enhanced selectivity for heavy hydrocarbon separations journal January 2016
Cellulose nanomaterials review: structure, properties and nanocomposites journal January 2011
Studies on the properties and formation mechanism of flexible nanocomposite hydrogels from cellulose nanocrystals and poly(acrylic acid) journal January 2012
Nanocellulose book November 2017
Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them journal May 2018

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