Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems

Z. Naseem; K. Sagoe-Crentsil; W. Duan

doi:10.1007/978-981-99-3330-3_56

Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems

Z. Naseem, K. Sagoe-Crentsil, W. Duan

Civil & Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

Redispersible polymers such as ethylene–vinyl acetate copolymer (EVA) have attracted attention in construction due to their enhanced flexural strength, adhesion, flexibility and resistance against water penetration. However, EVA particles cluster in a highly alkaline cementitious matrix and exhibit poor interaction with the cement matrix. The underlying mechanism of poor dispersibility of EVA is attributed to hydrophobic groups of polymers, a variation in the adsorption rate and molecular diffusion to the interface where they cluster together. This phenomenon can negatively affect the fresh properties of cement and produce a weak microstructure, adversely affecting the resulting composites’ performance. This study highlights how graphene oxide (GO) nanomaterial alters the nano- and microscale structural characteristics of EVA to minimize the negative effects. Transmission electron microscopy (TEM) revealed that the GO sheets modify EVA’s clustered nanostructure and disperse it through electrostatic and steric interactions. Furthermore, scanning electron microscopy (SEM) confirmed altered microscale structural characteristics (viz. surface features) by GO. The altered and enhanced material scale engineering performance, such as the compressive strength of the resulting cement composite, was notable.

Original language	English
Title of host publication	Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7
Editors	Wenhui Duan, Lihai Zhang, Surendra P. Shah
Publisher	Springer
Pages	527-533
Number of pages	7
ISBN (Print)	9789819933297
DOIs	https://doi.org/10.1007/978-981-99-3330-3_56
Publication status	Published - 2023
Event	Nanotechnology in Construction for Circular Economy 2022 - Melbourne, Australia Duration: 31 Oct 2022 → 2 Nov 2022 https://link.springer.com/book/10.1007/978-981-99-3330-3 (Proceedings)

Publication series

Name	Lecture Notes in Civil Engineering
Volume	356 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	Nanotechnology in Construction for Circular Economy 2022
Abbreviated title	NICOM 2022
Country/Territory	Australia
City	Melbourne
Period	31/10/22 → 2/11/22
Internet address	https://link.springer.com/book/10.1007/978-981-99-3330-3 (Proceedings)

Keywords

Cement composites
Dispersion
Ethylene-vinyl acetate copolymer
Graphene oxide
Interactions

Access to Document

10.1007/978-981-99-3330-3_56

Cite this

Naseem, Z., Sagoe-Crentsil, K., & Duan, W. (2023). Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems. In W. Duan, L. Zhang, & S. P. Shah (Eds.), Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7 (pp. 527-533). (Lecture Notes in Civil Engineering; Vol. 356 LNCE). Springer. https://doi.org/10.1007/978-981-99-3330-3_56

@inproceedings{032a3049af634d68a5a78eea633c9288,

title = "Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems",

abstract = "Redispersible polymers such as ethylene–vinyl acetate copolymer (EVA) have attracted attention in construction due to their enhanced flexural strength, adhesion, flexibility and resistance against water penetration. However, EVA particles cluster in a highly alkaline cementitious matrix and exhibit poor interaction with the cement matrix. The underlying mechanism of poor dispersibility of EVA is attributed to hydrophobic groups of polymers, a variation in the adsorption rate and molecular diffusion to the interface where they cluster together. This phenomenon can negatively affect the fresh properties of cement and produce a weak microstructure, adversely affecting the resulting composites{\textquoteright} performance. This study highlights how graphene oxide (GO) nanomaterial alters the nano- and microscale structural characteristics of EVA to minimize the negative effects. Transmission electron microscopy (TEM) revealed that the GO sheets modify EVA{\textquoteright}s clustered nanostructure and disperse it through electrostatic and steric interactions. Furthermore, scanning electron microscopy (SEM) confirmed altered microscale structural characteristics (viz. surface features) by GO. The altered and enhanced material scale engineering performance, such as the compressive strength of the resulting cement composite, was notable.",

keywords = "Cement composites, Dispersion, Ethylene-vinyl acetate copolymer, Graphene oxide, Interactions",

author = "Z. Naseem and K. Sagoe-Crentsil and W. Duan",

note = "Funding Information: Acknowledgements The authors are grateful for the financial support of the Australian Research Council in conducting this study. They acknowledge the use of facilities within the Monash Center of Electron Microscopy. Publisher Copyright: {\textcopyright} 2023, The Author(s).; Nanotechnology in Construction for Circular Economy 2022, NICOM 2022 ; Conference date: 31-10-2022 Through 02-11-2022",

year = "2023",

doi = "10.1007/978-981-99-3330-3_56",

language = "English",

isbn = "9789819933297",

series = "Lecture Notes in Civil Engineering",

publisher = "Springer",

pages = "527--533",

editor = "Wenhui Duan and Lihai Zhang and Shah, {Surendra P.}",

booktitle = "Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7",

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Naseem, Z, Sagoe-Crentsil, K & Duan, W 2023, Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems. in W Duan, L Zhang & SP Shah (eds), Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7. Lecture Notes in Civil Engineering, vol. 356 LNCE, Springer, pp. 527-533, Nanotechnology in Construction for Circular Economy 2022, Melbourne, Victoria, Australia, 31/10/22. https://doi.org/10.1007/978-981-99-3330-3_56

Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems. / Naseem, Z.; Sagoe-Crentsil, K.; Duan, W.
Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7. ed. / Wenhui Duan; Lihai Zhang; Surendra P. Shah. Springer, 2023. p. 527-533 (Lecture Notes in Civil Engineering; Vol. 356 LNCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems

AU - Naseem, Z.

AU - Sagoe-Crentsil, K.

AU - Duan, W.

N1 - Funding Information: Acknowledgements The authors are grateful for the financial support of the Australian Research Council in conducting this study. They acknowledge the use of facilities within the Monash Center of Electron Microscopy. Publisher Copyright: © 2023, The Author(s).

PY - 2023

Y1 - 2023

N2 - Redispersible polymers such as ethylene–vinyl acetate copolymer (EVA) have attracted attention in construction due to their enhanced flexural strength, adhesion, flexibility and resistance against water penetration. However, EVA particles cluster in a highly alkaline cementitious matrix and exhibit poor interaction with the cement matrix. The underlying mechanism of poor dispersibility of EVA is attributed to hydrophobic groups of polymers, a variation in the adsorption rate and molecular diffusion to the interface where they cluster together. This phenomenon can negatively affect the fresh properties of cement and produce a weak microstructure, adversely affecting the resulting composites’ performance. This study highlights how graphene oxide (GO) nanomaterial alters the nano- and microscale structural characteristics of EVA to minimize the negative effects. Transmission electron microscopy (TEM) revealed that the GO sheets modify EVA’s clustered nanostructure and disperse it through electrostatic and steric interactions. Furthermore, scanning electron microscopy (SEM) confirmed altered microscale structural characteristics (viz. surface features) by GO. The altered and enhanced material scale engineering performance, such as the compressive strength of the resulting cement composite, was notable.

AB - Redispersible polymers such as ethylene–vinyl acetate copolymer (EVA) have attracted attention in construction due to their enhanced flexural strength, adhesion, flexibility and resistance against water penetration. However, EVA particles cluster in a highly alkaline cementitious matrix and exhibit poor interaction with the cement matrix. The underlying mechanism of poor dispersibility of EVA is attributed to hydrophobic groups of polymers, a variation in the adsorption rate and molecular diffusion to the interface where they cluster together. This phenomenon can negatively affect the fresh properties of cement and produce a weak microstructure, adversely affecting the resulting composites’ performance. This study highlights how graphene oxide (GO) nanomaterial alters the nano- and microscale structural characteristics of EVA to minimize the negative effects. Transmission electron microscopy (TEM) revealed that the GO sheets modify EVA’s clustered nanostructure and disperse it through electrostatic and steric interactions. Furthermore, scanning electron microscopy (SEM) confirmed altered microscale structural characteristics (viz. surface features) by GO. The altered and enhanced material scale engineering performance, such as the compressive strength of the resulting cement composite, was notable.

KW - Cement composites

KW - Dispersion

KW - Ethylene-vinyl acetate copolymer

KW - Graphene oxide

KW - Interactions

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SN - 9789819933297

T3 - Lecture Notes in Civil Engineering

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BT - Nanotechnology in Construction for Circular Economy - Proceedings of NICOM7

A2 - Duan, Wenhui

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PB - Springer

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Y2 - 31 October 2022 through 2 November 2022

ER -

Graphene-Induced Nano- and Microscale Modification of Polymer Structures in Cement Composite Systems

Abstract

Publication series

Conference

Keywords

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