Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete

Polymers are increasingly used in many industrial sectors due to their high specific strength and stiffness, durability, versatile fabrication and lower maintenance cost. This has won the attention of structure and construction engineers in their attempt to improve the current construction materials...

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Main Author:	Nordin, Siti Syazwani
Format:	Thesis
Published:	2024
Subjects:	TA401-492 Materials of engineering and construction Mechanics of materials
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spelling	my-mmu-ep.128942024-08-29T08:23:43Z Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete 2024-02 Nordin, Siti Syazwani TA401-492 Materials of engineering and construction. Mechanics of materials Polymers are increasingly used in many industrial sectors due to their high specific strength and stiffness, durability, versatile fabrication and lower maintenance cost. This has won the attention of structure and construction engineers in their attempt to improve the current construction materials. Currently, the construction industry is seeking materials with low absorption rates, excellent durability, and physical and mechanical properties while being low cost in terms of production to improve the currently used construction materials specifically concrete. This requirement naturally led to the production of a new material known as composite material. In this research, the thermoplastic polyurethane (TPU) matrix has been reinforced with cellulose nanofiber extracted from agricultural waste material known as jute fibre through the melt compounding method. FESEM-EDX analysis showed that the surface structure of the prepared TPU nanocomposites was improved with a rougher surface than neat TPU with the existence of jute Cellulose Nanofiber (CNFs) (small dots) thus enabling the energy-dissipating mechanisms in the surface of TPU nanocomposites. Small dots structure continues to increase with the increase of Jute CNFs added with the optimum amount of CNFs being 4wt%. The tensile test also revealed that the prepared nanocomposites with 4wt.% of Jute CNFs achieved the highest strength at 32MPa with 59% enhancement. Due to the excellent properties exhibited, prepared TPU nanocomposites with 4wt% of Jute CNFs were chosen to be reinforced in geopolymer concrete. The geopolymer matrix was reinforced with prepared TPU/Jute CNFs Nanocomposites (0, 3, 6 and 9 wt.%) through normal mixing method and was cured at 4 different temperatures (room temperature, 60o , 100o and 140oC). Microstructural analysis of the prepared geopolymer/TPU nanocomposites concrete showed that the geopolymer matrix of geopolymer/TPU nanocomposites (6wt%) appeared highly dense at 100oC of curing temperature. A similar trend occurred in the compressive and split tensile strength where the highest strength was exhibited by the geopolymer/TPU nanocomposites (6wt%) at 100oC curing temperature with 76.1 MPa and 4.85 MPa respectively. It is found that the prepared geopolymer/TPU nanocomposites concrete with 6wt% of TPU nanocomposites was able to meet the requirement of the construction industry (ACI 318 and ACI 369.1M-17). 2024-02 Thesis https://shdl.mmu.edu.my/12894/ http://erep.mmu.edu.my/ phd doctoral Multimedia University Faculty of Management (FOM) EREP ID: 12323
institution	Multimedia University
collection	MMU Institutional Repository
topic	TA401-492 Materials of engineering and construction Mechanics of materials
spellingShingle	TA401-492 Materials of engineering and construction Mechanics of materials Nordin, Siti Syazwani Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
description	Polymers are increasingly used in many industrial sectors due to their high specific strength and stiffness, durability, versatile fabrication and lower maintenance cost. This has won the attention of structure and construction engineers in their attempt to improve the current construction materials. Currently, the construction industry is seeking materials with low absorption rates, excellent durability, and physical and mechanical properties while being low cost in terms of production to improve the currently used construction materials specifically concrete. This requirement naturally led to the production of a new material known as composite material. In this research, the thermoplastic polyurethane (TPU) matrix has been reinforced with cellulose nanofiber extracted from agricultural waste material known as jute fibre through the melt compounding method. FESEM-EDX analysis showed that the surface structure of the prepared TPU nanocomposites was improved with a rougher surface than neat TPU with the existence of jute Cellulose Nanofiber (CNFs) (small dots) thus enabling the energy-dissipating mechanisms in the surface of TPU nanocomposites. Small dots structure continues to increase with the increase of Jute CNFs added with the optimum amount of CNFs being 4wt%. The tensile test also revealed that the prepared nanocomposites with 4wt.% of Jute CNFs achieved the highest strength at 32MPa with 59% enhancement. Due to the excellent properties exhibited, prepared TPU nanocomposites with 4wt% of Jute CNFs were chosen to be reinforced in geopolymer concrete. The geopolymer matrix was reinforced with prepared TPU/Jute CNFs Nanocomposites (0, 3, 6 and 9 wt.%) through normal mixing method and was cured at 4 different temperatures (room temperature, 60o , 100o and 140oC). Microstructural analysis of the prepared geopolymer/TPU nanocomposites concrete showed that the geopolymer matrix of geopolymer/TPU nanocomposites (6wt%) appeared highly dense at 100oC of curing temperature. A similar trend occurred in the compressive and split tensile strength where the highest strength was exhibited by the geopolymer/TPU nanocomposites (6wt%) at 100oC curing temperature with 76.1 MPa and 4.85 MPa respectively. It is found that the prepared geopolymer/TPU nanocomposites concrete with 6wt% of TPU nanocomposites was able to meet the requirement of the construction industry (ACI 318 and ACI 369.1M-17).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Nordin, Siti Syazwani
author_facet	Nordin, Siti Syazwani
author_sort	Nordin, Siti Syazwani
title	Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
title_short	Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
title_full	Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
title_fullStr	Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
title_full_unstemmed	Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete
title_sort	development and characterisation of tpu/jute cnfs nanocomposites reinforced geopolymer concrete
granting_institution	Multimedia University
granting_department	Faculty of Management (FOM)
publishDate	2024
_version_	1811768019185041408

Development and characterisation of TPU/JUTE CNFs Nanocomposites reinforced geopolymer concrete

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