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Title: Surface modification of bamboo fiber with sodium hydroxide and graphene oxide in epoxy composites

Abstract

Bamboo fibers (BFs) have high mechanical properties and are candidate reinforcement for epoxy matrix composites. However, to improve performance, good fiber-matrix interaction is required. In this work, unidirectional long BF reinforced epoxy composites at fiber volume content of 22%, 40%, and 50% were made by compression molding. The 40 v% untreated BF reinforced composites exhibited 107% and 439% increase for flexural strength and modulus, respectively, compared to neat epoxy. Sodium hydroxide (NaOH) treatment was used to modify the surface of the BFs, and then the NaOH modified BFs were coated with graphene oxide (GO). The 40 v% NaOH modified BF composites showed an improvement from 259.9 to 327.5 MPa for flexural strength and from 16.7 to 21.5 GPa for flexural modulus, compared to 40 v% untreated BF composites. Slight improvement in properties up to 334.6 MPa for flexural strength and up to 23.8 GPa for flexural modulus was achieved for composites made of 40 v% NaOH/GO modified BF. Surface modification of BF after the NaOH and NaOH/GO treatment was confirmed by X-ray photoelectron spectroscopy and by scanning electron microscopy, which showed differences on the fiber surface morphology and on the composite fracture surface. This BF surface modification approach with GOmore » has potential to impart other properties beyond mechanical to produce multifunctional composite and lead to the use of sustainable plant fibers as alternatives to synthetic fibers.« less

Authors:
ORCiD logo [1];  [2]
  1. Michigan State Univ., East Lansing, MI (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Michigan State Univ., East Lansing, MI (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1729737
Report Number(s):
LLNL-JRNL-812533
Journal ID: ISSN 0272-8397; 1017244
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Polymer Composites
Additional Journal Information:
Journal Volume: na; Journal Issue: na; Journal ID: ISSN 0272-8397
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Composites; Fibers; Mechanical properties; Adhesion

Citation Formats

Reale Batista, Mariana Desireé, and Drzal, Lawrence T. Surface modification of bamboo fiber with sodium hydroxide and graphene oxide in epoxy composites. United States: N. p., 2020. Web. https://doi.org/10.1002/pc.25888.
Reale Batista, Mariana Desireé, & Drzal, Lawrence T. Surface modification of bamboo fiber with sodium hydroxide and graphene oxide in epoxy composites. United States. https://doi.org/10.1002/pc.25888
Reale Batista, Mariana Desireé, and Drzal, Lawrence T. Sat . "Surface modification of bamboo fiber with sodium hydroxide and graphene oxide in epoxy composites". United States. https://doi.org/10.1002/pc.25888. https://www.osti.gov/servlets/purl/1729737.
@article{osti_1729737,
title = {Surface modification of bamboo fiber with sodium hydroxide and graphene oxide in epoxy composites},
author = {Reale Batista, Mariana Desireé and Drzal, Lawrence T.},
abstractNote = {Bamboo fibers (BFs) have high mechanical properties and are candidate reinforcement for epoxy matrix composites. However, to improve performance, good fiber-matrix interaction is required. In this work, unidirectional long BF reinforced epoxy composites at fiber volume content of 22%, 40%, and 50% were made by compression molding. The 40 v% untreated BF reinforced composites exhibited 107% and 439% increase for flexural strength and modulus, respectively, compared to neat epoxy. Sodium hydroxide (NaOH) treatment was used to modify the surface of the BFs, and then the NaOH modified BFs were coated with graphene oxide (GO). The 40 v% NaOH modified BF composites showed an improvement from 259.9 to 327.5 MPa for flexural strength and from 16.7 to 21.5 GPa for flexural modulus, compared to 40 v% untreated BF composites. Slight improvement in properties up to 334.6 MPa for flexural strength and up to 23.8 GPa for flexural modulus was achieved for composites made of 40 v% NaOH/GO modified BF. Surface modification of BF after the NaOH and NaOH/GO treatment was confirmed by X-ray photoelectron spectroscopy and by scanning electron microscopy, which showed differences on the fiber surface morphology and on the composite fracture surface. This BF surface modification approach with GO has potential to impart other properties beyond mechanical to produce multifunctional composite and lead to the use of sustainable plant fibers as alternatives to synthetic fibers.},
doi = {10.1002/pc.25888},
journal = {Polymer Composites},
number = na,
volume = na,
place = {United States},
year = {2020},
month = {11}
}

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