Investigating the effect of surface modification on the dispersion process of polymer nanocomposites

Aditya Shanker Prasad; Yixing Wang; Xiaolin Li; Akshay Iyer; Wei Chen; L. Catherine Brinson; Linda S. Schadler

doi:10.1080/20550324.2020.1809250

Investigating the effect of surface modification on the dispersion process of polymer nanocomposites

Aditya Shanker Prasad^*, Yixing Wang, Xiaolin Li, Akshay Iyer, Wei Chen, L. Catherine Brinson, Linda S. Schadler

^*Corresponding author for this work

Mechanical Engineering

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

8 Scopus citations

Abstract

Achieving controlled nanoparticle dispersion through melt processing has been challenging as processing-structure rules for polymer nanocomposites are still not well-defined. This work focuses on developing a quantitative understanding of the filler–matrix compatibility and melt mixing parameters on the dispersion of nanoparticles. Filler-matrix compatibility was varied by surface modification of silica nanoparticles. A twin screw extruder was used to prepare the nanocomposites and TEM imaging and image analysis were used to quantitively characterize the microstructure. It was found that matrix–filler compatibility strongly affected the method of agglomerate breakdown and dispersion. Under similar conditions, compatible systems tended to disperse via rupture of agglomerates while incompatible systems were found to disperse via erosion. A map was created to predict the dispersion mechanism as a function of processing conditions and system compatibility and systems from this study and literature were found to be in good agreement with the map.

Original language	English (US)
Pages (from-to)	111-124
Number of pages	14
Journal	Nanocomposites
Volume	6
Issue number	3
DOIs	https://doi.org/10.1080/20550324.2020.1809250
State	Published - Aug 27 2020

Keywords

Polymer nanocomposites
TEM imaging
image analysis
nanoparticle dispersion
surface modification

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Materials Chemistry

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10.1080/20550324.2020.1809250

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title = "Investigating the effect of surface modification on the dispersion process of polymer nanocomposites",

abstract = "Achieving controlled nanoparticle dispersion through melt processing has been challenging as processing-structure rules for polymer nanocomposites are still not well-defined. This work focuses on developing a quantitative understanding of the filler–matrix compatibility and melt mixing parameters on the dispersion of nanoparticles. Filler-matrix compatibility was varied by surface modification of silica nanoparticles. A twin screw extruder was used to prepare the nanocomposites and TEM imaging and image analysis were used to quantitively characterize the microstructure. It was found that matrix–filler compatibility strongly affected the method of agglomerate breakdown and dispersion. Under similar conditions, compatible systems tended to disperse via rupture of agglomerates while incompatible systems were found to disperse via erosion. A map was created to predict the dispersion mechanism as a function of processing conditions and system compatibility and systems from this study and literature were found to be in good agreement with the map.",

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author = "Prasad, {Aditya Shanker} and Yixing Wang and Xiaolin Li and Akshay Iyer and Wei Chen and Brinson, {L. Catherine} and Schadler, {Linda S.}",

note = "Funding Information: This work was supported by the National Science Foundation under Grant no. CMMI − 1333977 (Rennselaer Polytechnic Institute), CMMI − 1729452 (Rennselaer Polytechnic Institute), and CMMI 1729743 (Northwestern University). Publisher Copyright: {\textcopyright} 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.",

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AU - Prasad, Aditya Shanker

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AU - Iyer, Akshay

AU - Chen, Wei

AU - Brinson, L. Catherine

AU - Schadler, Linda S.

N1 - Funding Information: This work was supported by the National Science Foundation under Grant no. CMMI − 1333977 (Rennselaer Polytechnic Institute), CMMI − 1729452 (Rennselaer Polytechnic Institute), and CMMI 1729743 (Northwestern University). Publisher Copyright: © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

PY - 2020/8/27

Y1 - 2020/8/27

N2 - Achieving controlled nanoparticle dispersion through melt processing has been challenging as processing-structure rules for polymer nanocomposites are still not well-defined. This work focuses on developing a quantitative understanding of the filler–matrix compatibility and melt mixing parameters on the dispersion of nanoparticles. Filler-matrix compatibility was varied by surface modification of silica nanoparticles. A twin screw extruder was used to prepare the nanocomposites and TEM imaging and image analysis were used to quantitively characterize the microstructure. It was found that matrix–filler compatibility strongly affected the method of agglomerate breakdown and dispersion. Under similar conditions, compatible systems tended to disperse via rupture of agglomerates while incompatible systems were found to disperse via erosion. A map was created to predict the dispersion mechanism as a function of processing conditions and system compatibility and systems from this study and literature were found to be in good agreement with the map.

AB - Achieving controlled nanoparticle dispersion through melt processing has been challenging as processing-structure rules for polymer nanocomposites are still not well-defined. This work focuses on developing a quantitative understanding of the filler–matrix compatibility and melt mixing parameters on the dispersion of nanoparticles. Filler-matrix compatibility was varied by surface modification of silica nanoparticles. A twin screw extruder was used to prepare the nanocomposites and TEM imaging and image analysis were used to quantitively characterize the microstructure. It was found that matrix–filler compatibility strongly affected the method of agglomerate breakdown and dispersion. Under similar conditions, compatible systems tended to disperse via rupture of agglomerates while incompatible systems were found to disperse via erosion. A map was created to predict the dispersion mechanism as a function of processing conditions and system compatibility and systems from this study and literature were found to be in good agreement with the map.

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Investigating the effect of surface modification on the dispersion process of polymer nanocomposites

Abstract

Keywords

ASJC Scopus subject areas

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