Functionalized hexagonal boron nitride nanoplatelets for advanced cementitious nanocomposites

Panagiotis A. Danoglidis; Cory M. Thomas; Myrsini E. Maglogianni; Mark C. Hersam; Maria S. Konsta-Gdoutos

doi:10.1016/j.cemconcomp.2023.105127

Functionalized hexagonal boron nitride nanoplatelets for advanced cementitious nanocomposites

Panagiotis A. Danoglidis, Cory M. Thomas, Myrsini E. Maglogianni, Mark C. Hersam, Maria S. Konsta-Gdoutos^*

^*Corresponding author for this work

Materials Science and Engineering

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

3 Scopus citations

Abstract

Portland cement-based nanocomposites were successfully fabricated with low volume fractions of hexagonal boron nitride (hBN) nanoplatelets, exfoliated and functionalized using a combination of ball milling and sonicated-assisted dispersion. Surface topography, thickness, lateral dimension, and number of layers of the hBN nanoplatelets were evaluated by AFM and Raman analysis. The identification of functional groups attached onto the functionalized hBN was performed through FTIR. The results show that the functionalization successfully exfoliates the hBN nanoplatelets to few-layer thicknesses, resulting in suspensions with high colloidal stability. The grafted hydroxyl and carboxyl groups on the hBN surface interact with the Ca²⁺ ions of calcium silicate hydrates (CSH), improving the load-transfer efficiency from the cement matrix to the hBN nanoplatelets. Overall, the hBN reinforced cementitious composites demonstrated significant enhancement in flexural strength by ∼50%, compressive strength by ∼17%, Young's modulus by ∼56%, and fracture energy by ∼76%.

Original language	English (US)
Article number	105127
Journal	Cement and Concrete Composites
Volume	141
DOIs	https://doi.org/10.1016/j.cemconcomp.2023.105127
State	Published - Aug 2023

Funding

The authors acknowledge support from the National Science Foundation Partnerships for Research and Education in Materials (Award Number NSF DMR-2122128 ) and the Northwestern University Materials Research Science and Engineering Center (Award Number NSF DMR-1720139 ). Master Builders Solutions Admixtures US, LLC is kindly acknowledged for providing the chemical admixtures. C.M.T. gratefully acknowledges the support of the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1842165 .

Keywords

Exfoliation
Hexagonal boron nitride
Modulus of elasticity
Number of layers
Surface functionalization

ASJC Scopus subject areas

Building and Construction
General Materials Science

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10.1016/j.cemconcomp.2023.105127

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title = "Functionalized hexagonal boron nitride nanoplatelets for advanced cementitious nanocomposites",

abstract = "Portland cement-based nanocomposites were successfully fabricated with low volume fractions of hexagonal boron nitride (hBN) nanoplatelets, exfoliated and functionalized using a combination of ball milling and sonicated-assisted dispersion. Surface topography, thickness, lateral dimension, and number of layers of the hBN nanoplatelets were evaluated by AFM and Raman analysis. The identification of functional groups attached onto the functionalized hBN was performed through FTIR. The results show that the functionalization successfully exfoliates the hBN nanoplatelets to few-layer thicknesses, resulting in suspensions with high colloidal stability. The grafted hydroxyl and carboxyl groups on the hBN surface interact with the Ca2+ ions of calcium silicate hydrates (CSH), improving the load-transfer efficiency from the cement matrix to the hBN nanoplatelets. Overall, the hBN reinforced cementitious composites demonstrated significant enhancement in flexural strength by ∼50%, compressive strength by ∼17%, Young's modulus by ∼56%, and fracture energy by ∼76%.",

keywords = "Exfoliation, Hexagonal boron nitride, Modulus of elasticity, Number of layers, Surface functionalization",

author = "Danoglidis, {Panagiotis A.} and Thomas, {Cory M.} and Maglogianni, {Myrsini E.} and Hersam, {Mark C.} and Konsta-Gdoutos, {Maria S.}",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = aug,

doi = "10.1016/j.cemconcomp.2023.105127",

language = "English (US)",

volume = "141",

journal = "Cement and Concrete Composites",

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AU - Danoglidis, Panagiotis A.

AU - Thomas, Cory M.

AU - Maglogianni, Myrsini E.

AU - Hersam, Mark C.

AU - Konsta-Gdoutos, Maria S.

PY - 2023/8

Y1 - 2023/8

N2 - Portland cement-based nanocomposites were successfully fabricated with low volume fractions of hexagonal boron nitride (hBN) nanoplatelets, exfoliated and functionalized using a combination of ball milling and sonicated-assisted dispersion. Surface topography, thickness, lateral dimension, and number of layers of the hBN nanoplatelets were evaluated by AFM and Raman analysis. The identification of functional groups attached onto the functionalized hBN was performed through FTIR. The results show that the functionalization successfully exfoliates the hBN nanoplatelets to few-layer thicknesses, resulting in suspensions with high colloidal stability. The grafted hydroxyl and carboxyl groups on the hBN surface interact with the Ca2+ ions of calcium silicate hydrates (CSH), improving the load-transfer efficiency from the cement matrix to the hBN nanoplatelets. Overall, the hBN reinforced cementitious composites demonstrated significant enhancement in flexural strength by ∼50%, compressive strength by ∼17%, Young's modulus by ∼56%, and fracture energy by ∼76%.

AB - Portland cement-based nanocomposites were successfully fabricated with low volume fractions of hexagonal boron nitride (hBN) nanoplatelets, exfoliated and functionalized using a combination of ball milling and sonicated-assisted dispersion. Surface topography, thickness, lateral dimension, and number of layers of the hBN nanoplatelets were evaluated by AFM and Raman analysis. The identification of functional groups attached onto the functionalized hBN was performed through FTIR. The results show that the functionalization successfully exfoliates the hBN nanoplatelets to few-layer thicknesses, resulting in suspensions with high colloidal stability. The grafted hydroxyl and carboxyl groups on the hBN surface interact with the Ca2+ ions of calcium silicate hydrates (CSH), improving the load-transfer efficiency from the cement matrix to the hBN nanoplatelets. Overall, the hBN reinforced cementitious composites demonstrated significant enhancement in flexural strength by ∼50%, compressive strength by ∼17%, Young's modulus by ∼56%, and fracture energy by ∼76%.

KW - Exfoliation

KW - Hexagonal boron nitride

KW - Modulus of elasticity

KW - Number of layers

KW - Surface functionalization

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Functionalized hexagonal boron nitride nanoplatelets for advanced cementitious nanocomposites

Abstract

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Keywords

ASJC Scopus subject areas

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