Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)

Cellulose nanocrystal (CNC) has potential to be used as a reinforcement in polymeric nanocomposites because of their inherent biodegradability, universal accessibility, and superior mechanical properties. The most crucial challenge faced in the nanocomposite production is dispersing the nanoparticle...

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Autores principales:	Saptaparni Chanda, Dilpreet S. Bajwa, Greg A. Holt, Nicole Stark, Sreekala G. Bajwa, Mohiuddin Quadir
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	cellulose nanocrystals poly (ethylene oxide) dispersion thermal stability mechanical properties self-condensation reaction Materials of engineering and construction. Mechanics of materials TA401-492 Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/e9a52841df8543c790562cb2d6d970e5
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spelling	oai:doaj.org-article:e9a52841df8543c790562cb2d6d970e52021-12-02T16:43:50ZSilane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)2055-033210.1080/20550324.2021.1942641https://doaj.org/article/e9a52841df8543c790562cb2d6d970e52021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/20550324.2021.1942641https://doaj.org/toc/2055-0332Cellulose nanocrystal (CNC) has potential to be used as a reinforcement in polymeric nanocomposites because of their inherent biodegradability, universal accessibility, and superior mechanical properties. The most crucial challenge faced in the nanocomposite production is dispersing the nanoparticles effectively in the polymer matrix, so that the exceptional mechanical properties of the nanoparticles can be transferred to the macroscale properties to the bulk nanocomposites. In this research, a safe, effective and ecofriendly modification was used to functionalize the surface hydroxyl groups of CNC via silane treatment. These modified CNCs were used as reinforcements to prepare poly (ethylene oxide) (PEO)/CNC nanocomposites. The composites were prepared using solvent casting method. The composite properties were evaluated using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Thermo-Gravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and Dynamic Mechanical Analysis (DMA). The SEM micrographs demonstrated that the composites incorporated with silane treated CNCs showed improvement in the dispersion behavior of the nanoparticles in the matrix. Oxidative combustion of the composites containing silane treated CNCs promoted char formation and enhanced thermal stability. The composites containing (1:1) silane treated CNCs exhibited the better crystallization ability, highest storage modulus, and lowest tan δ value compared to the other silane treated systems indicating improved dispersion of CNC. The polysiloxane network provided an efficient surface covering of the CNC molecules, imparting reduced polar surface characteristics and enhancing the overall mechanical properties of the composites.Saptaparni ChandaDilpreet S. BajwaGreg A. HoltNicole StarkSreekala G. BajwaMohiuddin QuadirTaylor & Francis Grouparticlecellulose nanocrystalspoly (ethylene oxide)dispersionthermal stabilitymechanical propertiesself-condensation reactionMaterials of engineering and construction. Mechanics of materialsTA401-492Polymers and polymer manufactureTP1080-1185ENNanocomposites, Vol 7, Iss 1, Pp 87-96 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose nanocrystals poly (ethylene oxide) dispersion thermal stability mechanical properties self-condensation reaction Materials of engineering and construction. Mechanics of materials TA401-492 Polymers and polymer manufacture TP1080-1185
spellingShingle	cellulose nanocrystals poly (ethylene oxide) dispersion thermal stability mechanical properties self-condensation reaction Materials of engineering and construction. Mechanics of materials TA401-492 Polymers and polymer manufacture TP1080-1185 Saptaparni Chanda Dilpreet S. Bajwa Greg A. Holt Nicole Stark Sreekala G. Bajwa Mohiuddin Quadir Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
description	Cellulose nanocrystal (CNC) has potential to be used as a reinforcement in polymeric nanocomposites because of their inherent biodegradability, universal accessibility, and superior mechanical properties. The most crucial challenge faced in the nanocomposite production is dispersing the nanoparticles effectively in the polymer matrix, so that the exceptional mechanical properties of the nanoparticles can be transferred to the macroscale properties to the bulk nanocomposites. In this research, a safe, effective and ecofriendly modification was used to functionalize the surface hydroxyl groups of CNC via silane treatment. These modified CNCs were used as reinforcements to prepare poly (ethylene oxide) (PEO)/CNC nanocomposites. The composites were prepared using solvent casting method. The composite properties were evaluated using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Thermo-Gravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and Dynamic Mechanical Analysis (DMA). The SEM micrographs demonstrated that the composites incorporated with silane treated CNCs showed improvement in the dispersion behavior of the nanoparticles in the matrix. Oxidative combustion of the composites containing silane treated CNCs promoted char formation and enhanced thermal stability. The composites containing (1:1) silane treated CNCs exhibited the better crystallization ability, highest storage modulus, and lowest tan δ value compared to the other silane treated systems indicating improved dispersion of CNC. The polysiloxane network provided an efficient surface covering of the CNC molecules, imparting reduced polar surface characteristics and enhancing the overall mechanical properties of the composites.
format	article
author	Saptaparni Chanda Dilpreet S. Bajwa Greg A. Holt Nicole Stark Sreekala G. Bajwa Mohiuddin Quadir
author_facet	Saptaparni Chanda Dilpreet S. Bajwa Greg A. Holt Nicole Stark Sreekala G. Bajwa Mohiuddin Quadir
author_sort	Saptaparni Chanda
title	Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
title_short	Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
title_full	Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
title_fullStr	Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
title_full_unstemmed	Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
title_sort	silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/e9a52841df8543c790562cb2d6d970e5
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Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)

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