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Trends in Textile Engineering & Fashion Technology

Fibers Waste in Textiles, Their Recycling and Applications in Composites

Patti A1 and Acierno D2*

1Department of Civil Engineering and Architecture, University of Catania, Viale Andrea Doria 6, Catania, Italy

2CRdC New Technologies for Productive Activities, Naples, Italy

*Corresponding author: CRdC New Technologies for Productive Activities Scarl, Via Nuova Agnano 11, Naples, Italy

Submission: April 27, 2020; Published: May 22, 2020

DOI: 10.31031/TTEFT.2020.06.000628

ISSN 2578-0271
Volume 6 Issue 1

Abstract

This work aims to briefly overview the issue of the large consumption of textiles in the world, linked to the complexity of their production from the environmental impact point of view, by highlighting the need of recycling and reuses operations, and the possible applications of the recovered-fibers in the world of eco-friendly composites.

Mini Review

Since prehistoric era, leather and natural fibers have been used by humans to obtain useful clothing to cover and protect them. In the Neolithic, the first evidence of true textures with basket-weave on clay has been found in Iraq, and the plain-weave on a bone in southern Turkey [1]. By the third millennium BC, the usage of fibers has been considerably widespread, and weaving of cotton has already been well-situated in Pakistan and in India. In the beginning of the 18th century, with the industrial revolution and the development of machines, the fiber manufacturing process has been launched [2]. During the second half of century E. Cartwright developed the first power loom, and E. Whitney invented the cotton gin: the consumption of the cotton increased from about 4 to 300 million pounds. A century later, by the findings of the synthesis of long polymer chains with properties similar to cellulose, silk, and rubber, the new fields of synthetic fabrics have been opened with nylon 66, nylon 6, acrylic and polyester fibers [3]. Since then, the textiles market, based on natural materials, synthetics and blends of both, has gradually grown up, not only due to the increase in the population in the world, but also to follow economic and marketing aspects linked to the world of the new trend and style, apparel and fashion [4].
Inevitably, the growing demand of the cloth products led to an increase of the environmental impact of the related industry, being this latter one among the most polluting and harmful productions. In fact, the textile manufacturing, starting from raw materials, going through the various operations (fiber production, pretreatment, dyeing, and finishing), requires a large use of hazardous chemicals, such as pesticides, solvent, mothproofing agents, heavy and toxic metals, disperse dyes, until a huge volume of water [5]. Additionally, an extensive dissipation of energy and power, air emission, fuel consumption for transportation, use of non-biodegradable packaging materials, and generation of large quantities of solid wastes should be considered in the evaluation of the alteration of the quality of the surrounding ecosystem [6]. In the land filling, the natural fibers may take weeks or years to decompose by releasing methane and carbon dioxide; on the contrary, synthetic fibers take 30-40 years to break, and require hundred years to fully decompose, evenly by delivering adverse substances into the surrounding soil [7].
In the light of these complex ecological issues, European directives have promoted and encouraged the recovery of textile waste [8]. The recycling phase of the discarded fabrics could be useful in reducing the virgin yarns production, and, in general, in decreasing the environmental impact, compared to the incineration and land filling processes. Additionally, the reuse of thrown garments or scraps of cloths could be preferred over the recycling operation, since it avoids the technological treatments at the end of the product life cycle [9].
The textile waste lifecycle model proposed by Domina & Koch [10] represents different classes of waste coming from the fabric and apparel. The first one involves the pre-consumer waste generated by retailers: these materials, primarily in the form of unsold merchandise, can be easily re-integrated through the sale in an outlet or a jobber, or through no-profit organization. The second group regards the post-consumer waste, generated by the public or by the manufactures; these products are composed of fiber, yam, fabric scraps and apparel cuttings, and may be allocated in landfills or in incinerators, or may be converted into energy or powder for the manufacturing, or may be sold to a textile waste recycler and re-converted into reusable goods (Figure 1).

Figure 1:


One of the possible alternatives for the recovery of the fibers is their applications, as fillers, for realizing fiber-reinforced composites (FRC). Experimental evidences have shown as the presence of fibers was crucial in affecting the thermal and mechanical features, and eco-compatibility of fully degradable matrices (polylactic acid, thermoplastic starch, cellulose) and partially degradable ones (polypropylene, polyester, polyethylene, polyvinyl alcohol) in the light of the ultimate purpose of composites realization [11]. In this context, cotton based-fabric, opened into a fibrous form by garneting technique, was blended with polypropylene for realizing 3D woven textiles [12], or mixed with hardwood strand core for attaining the oriented panels [13]. Denim fabric was recycled and converted into epoxy-based composites by using, as fabrication route, the needle-punching non-woven [14]. An insulation material was realized by a non-homogeneous medium obtained from discarded components of cotton (70%), wool (15%) and acrylic, and polyester fibers (15%) recovered by the disposal of plastic bottles [15]. Cloth scraps and clippings of cotton and jute materials, together with glass fabric, were incorporated into thermosetting of unsaturated polyester resin for fabricating laminate composites with the stacking of fabric plies [16].
In conclusion, given the huge amount of solid waste of the textile business, the high environmental impact of the production, and the complicated operation of the disposal, it is necessary to provide a convenient reintegration of waste products, for example, in the designing of compounds, by taking advantage from the point of view of eco-compatibility and environmental sustainability.

Acknowledgement

A.Patti wished to thank the Italian Ministry of Education, Universities and Research (MIUR) in the framework of Action 1.2 “Researcher Mobility” of The Axis I of PON R&I 2014-2020 under the call AIM-Attrazione e Mobilità Internazionale.

References

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© 2020 Acierno D. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and build upon your work non-commercially.

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