Nanoscale structure and local mechanical properties of fiber-reinforced composites containing MWCNT-grafted hybrid glass fibers

Charles D. Wood; Marc J. Palmeri; Karl W. Putz; Gregory Ho; Rick Barto; L. Catherine Brinson

doi:10.1016/j.compscitech.2012.06.008

Nanoscale structure and local mechanical properties of fiber-reinforced composites containing MWCNT-grafted hybrid glass fibers

Charles D. Wood, Marc J. Palmeri, Karl W. Putz, Gregory Ho, Rick Barto, L. Catherine Brinson^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Carbon nanotubes (CNTs) were grown from the surface of glass fibers by chemical vapor deposition, and these hybrid fibers were individually dispersed in an epoxy matrix to investigate the local composite structure and properties near the fiber surface. High-resolution transmission electron microscopy revealed the influence of infiltration and curing of a liquid epoxy precursor on the morphology of the CNT " forest" region, or region of high CNT density near the fiber surface. Subsequent image analysis highlighted the importance of spatially dependent volume fractions of CNTs in the matrix as a function of distance from the fiber surface, and nanoindentation was used to probe local mechanical properties in the CNT forest region, showing strong correlations between local stiffness and volume fraction. This work represents the first in situ measurements of local mechanical properties of the nano-structured matrix region in hybrid fiber-reinforced composites, providing a means of quantifying the reinforcement provided by the grafted nanofillers.

Original language	English (US)
Pages (from-to)	1705-1710
Number of pages	6
Journal	Composites Science and Technology
Volume	72
Issue number	14
DOIs	https://doi.org/10.1016/j.compscitech.2012.06.008
State	Published - Sep 17 2012

Keywords

A. Carbon nanotubes
A. Hybrid composites
B. Mechanical properties
Nanoindentation

ASJC Scopus subject areas

Ceramics and Composites
Engineering(all)

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10.1016/j.compscitech.2012.06.008

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title = "Nanoscale structure and local mechanical properties of fiber-reinforced composites containing MWCNT-grafted hybrid glass fibers",

abstract = "Carbon nanotubes (CNTs) were grown from the surface of glass fibers by chemical vapor deposition, and these hybrid fibers were individually dispersed in an epoxy matrix to investigate the local composite structure and properties near the fiber surface. High-resolution transmission electron microscopy revealed the influence of infiltration and curing of a liquid epoxy precursor on the morphology of the CNT {"} forest{"} region, or region of high CNT density near the fiber surface. Subsequent image analysis highlighted the importance of spatially dependent volume fractions of CNTs in the matrix as a function of distance from the fiber surface, and nanoindentation was used to probe local mechanical properties in the CNT forest region, showing strong correlations between local stiffness and volume fraction. This work represents the first in situ measurements of local mechanical properties of the nano-structured matrix region in hybrid fiber-reinforced composites, providing a means of quantifying the reinforcement provided by the grafted nanofillers.",

keywords = "A. Carbon nanotubes, A. Hybrid composites, B. Mechanical properties, Nanoindentation",

author = "Wood, {Charles D.} and Palmeri, {Marc J.} and Putz, {Karl W.} and Gregory Ho and Rick Barto and {Catherine Brinson}, L.",

note = "Funding Information: This work was supported through funding by the National Science Foundation and Lockheed Martin. The Optical Microscopy Metallography Facility, part of the MRSEC center, and the NIFTI facilities of the NUANCE Center at Northwestern University provided additional support through the use of equipment and facilities. ",

year = "2012",

month = sep,

day = "17",

doi = "10.1016/j.compscitech.2012.06.008",

language = "English (US)",

volume = "72",

pages = "1705--1710",

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T1 - Nanoscale structure and local mechanical properties of fiber-reinforced composites containing MWCNT-grafted hybrid glass fibers

AU - Wood, Charles D.

AU - Palmeri, Marc J.

AU - Putz, Karl W.

AU - Ho, Gregory

AU - Barto, Rick

AU - Catherine Brinson, L.

N1 - Funding Information: This work was supported through funding by the National Science Foundation and Lockheed Martin. The Optical Microscopy Metallography Facility, part of the MRSEC center, and the NIFTI facilities of the NUANCE Center at Northwestern University provided additional support through the use of equipment and facilities.

PY - 2012/9/17

Y1 - 2012/9/17

N2 - Carbon nanotubes (CNTs) were grown from the surface of glass fibers by chemical vapor deposition, and these hybrid fibers were individually dispersed in an epoxy matrix to investigate the local composite structure and properties near the fiber surface. High-resolution transmission electron microscopy revealed the influence of infiltration and curing of a liquid epoxy precursor on the morphology of the CNT " forest" region, or region of high CNT density near the fiber surface. Subsequent image analysis highlighted the importance of spatially dependent volume fractions of CNTs in the matrix as a function of distance from the fiber surface, and nanoindentation was used to probe local mechanical properties in the CNT forest region, showing strong correlations between local stiffness and volume fraction. This work represents the first in situ measurements of local mechanical properties of the nano-structured matrix region in hybrid fiber-reinforced composites, providing a means of quantifying the reinforcement provided by the grafted nanofillers.

AB - Carbon nanotubes (CNTs) were grown from the surface of glass fibers by chemical vapor deposition, and these hybrid fibers were individually dispersed in an epoxy matrix to investigate the local composite structure and properties near the fiber surface. High-resolution transmission electron microscopy revealed the influence of infiltration and curing of a liquid epoxy precursor on the morphology of the CNT " forest" region, or region of high CNT density near the fiber surface. Subsequent image analysis highlighted the importance of spatially dependent volume fractions of CNTs in the matrix as a function of distance from the fiber surface, and nanoindentation was used to probe local mechanical properties in the CNT forest region, showing strong correlations between local stiffness and volume fraction. This work represents the first in situ measurements of local mechanical properties of the nano-structured matrix region in hybrid fiber-reinforced composites, providing a means of quantifying the reinforcement provided by the grafted nanofillers.

KW - A. Carbon nanotubes

KW - A. Hybrid composites

KW - B. Mechanical properties

KW - Nanoindentation

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VL - 72

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JO - Composites Science and Technology

JF - Composites Science and Technology

IS - 14

ER -

Nanoscale structure and local mechanical properties of fiber-reinforced composites containing MWCNT-grafted hybrid glass fibers

Abstract

Keywords

ASJC Scopus subject areas

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