Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns

Poly(vinyl alcohol) (PVA) in multifilament and braided yarns (BY) forms presents great potential for the design of numerous applications. However, such solutions fail to accomplish their requirements if the chemical and thermomechanical behaviour is not sufficiently known. Hence, a comprehensive cha...

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Autores principales:	Tania F. Freire, Tiago Quinaz, Aureliano Fertuzinhos, Nguyễn T. Quyền, Marcelo F. S. M. de Moura, Marcos Martins, Andrea Zille, Nuno Dourado
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polyvinyl alcohol braided yarns dynamical mechanical analysis viscoelastic properties creep and relaxation textile Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/cd126c1d873242549ca910d32e5802b5
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spelling	oai:doaj.org-article:cd126c1d873242549ca910d32e5802b52021-11-11T18:42:29ZThermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns10.3390/polym132136442073-4360https://doaj.org/article/cd126c1d873242549ca910d32e5802b52021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3644https://doaj.org/toc/2073-4360Poly(vinyl alcohol) (PVA) in multifilament and braided yarns (BY) forms presents great potential for the design of numerous applications. However, such solutions fail to accomplish their requirements if the chemical and thermomechanical behaviour is not sufficiently known. Hence, a comprehensive characterisation of PVA multifilament and three BY architectures (6, 8, and 10 yarns) was performed involving the application of several techniques to evaluate the morphological, chemical, thermal, and mechanical features of those structures. Scanning electron microscopy (SEM) was used to reveal structural and morphological information. Differential thermal analysis (DTA) pointed out the glass transition temperature of PVA at 76 °C and the corresponding crystalline melting point at 210 °C. PVA BY exhibited higher tensile strength under monotonic quasi-static loading in comparison to their multifilament forms. Creep tests demonstrated that 6BY structures present the most deformable behaviour, while 8BY structures are the least deformable. Relaxation tests showed that 8BY architecture presents a more expressive variation of tensile stress, while 10BY offered the least. Dynamic mechanical analysis (DMA) revealed storage and loss moduli curves with similar transition peaks for the tested structures, except for the 10BY. Storage modulus is always four to six times higher than the loss modulus.Tania F. FreireTiago QuinazAureliano FertuzinhosNguyễn T. QuyềnMarcelo F. S. M. de MouraMarcos MartinsAndrea ZilleNuno DouradoMDPI AGarticlepolyvinyl alcoholbraided yarnsdynamical mechanical analysisviscoelastic propertiescreep and relaxationtextileOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3644, p 3644 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polyvinyl alcohol braided yarns dynamical mechanical analysis viscoelastic properties creep and relaxation textile Organic chemistry QD241-441
spellingShingle	polyvinyl alcohol braided yarns dynamical mechanical analysis viscoelastic properties creep and relaxation textile Organic chemistry QD241-441 Tania F. Freire Tiago Quinaz Aureliano Fertuzinhos Nguyễn T. Quyền Marcelo F. S. M. de Moura Marcos Martins Andrea Zille Nuno Dourado Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
description	Poly(vinyl alcohol) (PVA) in multifilament and braided yarns (BY) forms presents great potential for the design of numerous applications. However, such solutions fail to accomplish their requirements if the chemical and thermomechanical behaviour is not sufficiently known. Hence, a comprehensive characterisation of PVA multifilament and three BY architectures (6, 8, and 10 yarns) was performed involving the application of several techniques to evaluate the morphological, chemical, thermal, and mechanical features of those structures. Scanning electron microscopy (SEM) was used to reveal structural and morphological information. Differential thermal analysis (DTA) pointed out the glass transition temperature of PVA at 76 °C and the corresponding crystalline melting point at 210 °C. PVA BY exhibited higher tensile strength under monotonic quasi-static loading in comparison to their multifilament forms. Creep tests demonstrated that 6BY structures present the most deformable behaviour, while 8BY structures are the least deformable. Relaxation tests showed that 8BY architecture presents a more expressive variation of tensile stress, while 10BY offered the least. Dynamic mechanical analysis (DMA) revealed storage and loss moduli curves with similar transition peaks for the tested structures, except for the 10BY. Storage modulus is always four to six times higher than the loss modulus.
format	article
author	Tania F. Freire Tiago Quinaz Aureliano Fertuzinhos Nguyễn T. Quyền Marcelo F. S. M. de Moura Marcos Martins Andrea Zille Nuno Dourado
author_facet	Tania F. Freire Tiago Quinaz Aureliano Fertuzinhos Nguyễn T. Quyền Marcelo F. S. M. de Moura Marcos Martins Andrea Zille Nuno Dourado
author_sort	Tania F. Freire
title	Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
title_short	Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
title_full	Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
title_fullStr	Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
title_full_unstemmed	Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns
title_sort	thermal, mechanical and chemical analysis of poly(vinyl alcohol) multifilament and braided yarns
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cd126c1d873242549ca910d32e5802b5
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Thermal, Mechanical and Chemical Analysis of Poly(vinyl alcohol) Multifilament and Braided Yarns

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