Polyamide Fibres

Cook, J. Gordon

doi:10.1533/9781855734852.194

Cited by 4 publications

(4 citation statements)

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“…The two most important types of nylon used in apparel are nylon-6 and nylon-6,6. Nylon-6 is produced by the self-condensation of caprolactam, and nylon-6,6 is produced through the interaction of hexamethylene diamine and adipic acid (Cook, 2001). Nylon, like polyester, is semicrystalline, characterized by both amorphous and crystalline states throughout the fiber, with van der Waal’s and (unlike polyester) hydrogen bonds as intermolecular forces.…”

Section: Introductionmentioning

confidence: 99%

Synthetic Clothing and the Problem With Odor

Abdul-Bari

McQueen

Nguyen

et al. 2018

Clothing and Textiles Research Journal

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Although polyester is well known for smelling strongly after wear, little is known about the propensity of nylon to retain and emit body odor. In this study, we investigated whether odor intensity differed between nylon and polyester fabrics. A secondary aim was to compare odor on fabrics frozen prior to sensory assessment with fabrics stored at room temperature. Eight participants wore T-shirts with fabrics in the underarm. Odor intensity was rated by 13 assessors. Odor reduction rate (ORR) was measured using ISO 17299-3. Overall, no differences were found in odor intensity between nylon and polyester. Any differences found between the two fabrics were likely dependent on the individual who wore the fabric. The ORR was higher for nylon than polyester, indicating that nylon absorbed more odorants. There was some evidence to suggest that odor intensity could increase on nylon fabrics stored at room temperature, but this was less apparent for polyester.

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Section: Introductionmentioning

confidence: 99%

Synthetic Clothing and the Problem With Odor

Abdul-Bari

McQueen

Nguyen

et al. 2018

Clothing and Textiles Research Journal

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“…Staple‐spun yarns are produced through spinning process in which short raw natural (cotton), semi‐natural (viscose) and synthetic (polyester) staples are converted into a continuous yarn, using various spinning methods such as ring spinning, open‐end spinning, rotor spinning, friction spinning, vortex spinning, and air‐jet spinning. [ 25–27 ] Filament yarns are basically fibers extruded through a spinneret. Filament yarns can be manufactured through different methods such as dry‐spinning, melt‐spinning, and wet‐spinning [ 27,28 ] and are classified as monofilament (e.g., fishing line) and multifilament yarns.…”

Section: Introductionmentioning

confidence: 99%

Effect of Core Yarn on Linear Actuation of Electroactive Polymer Coated Yarn Actuators

Mehraeen

Asadi

Martínez

et al. 2023

Adv Materials Technologies

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Smart textiles combine the features of conventional textiles with promising properties of smart materials such as electromechanically active polymers, resulting in textile actuators. Textile actuators comprise of individual yarn actuators, so understanding their electro‐chemo‐mechanical behavior is of great importance. Herein, this study investigates the effect of inherent structural and mechanical properties of commercial yarns, that form the core of the yarn actuators, on the linear actuation of the conducting‐polymer‐based yarn actuators. Commercial yarns were coated with poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) to make them conductive. Then polypyrrole (PPy) that provides the electromechanical actuation is electropolymerized on the yarn surface under controlled conditions. The linear actuation of the yarn actuators is investigated in aqueous electrolyte under isotonic and isometric conditions. The yarn actuators generated an isotonic strain up to 0.99% and isometric force of 95 mN. The isometric strain achieved in this work is more than tenfold and threefold greater than the previously reported yarn actuators. The isometric actuation force shows an increase of nearly 11‐fold over our previous results. Finally, a qualitative mechanical model is introduced to describe the actuation behavior of yarn actuators. The strain and force created by the yarn actuators make them promising candidates for wearable actuator technologies.

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“…In addition to textiles, polyamides are used for a wide range of applications [ 20 , 21 ]. Different finishing processes can be used to apply different properties, such as waterproof, windproof, and breathable properties, to polyamide fabrics, thus polyamide is most commonly used for outdoor applications [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Design of pH Responsive Textile as a Sensor Material for Acid Rain

Stojkoski

Kert

2020

Polymers

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The chemical composition of rainwater can serve as an indicator of the excess of acidifying air pollutants. The pH value of rainwater in the presence of sulphur dioxide and nitrogen oxides, the precursors of acid rain, falls below pH 5.6, which is the limit value for acid rain. In this research, the tailoring of halochromic textile was examined for the design of a functional textile that can serve as a sensor and inform the wearer about the presence of pollutants in the air by means of an immediate colour change. For this purpose, a polyamide 6 fabric was dyed with the pH-sensitive Bromocresol green dye, which causes a colour change below pH 3.6 (yellow) and above pH 5.4 (blue). In addition, the dyed polyamide 6 fabric was treated with a water and oil repellent finish. Colour and colour change before and after immersion of unfinished and finished dyed samples in buffer solutions with different pH values were evaluated spectrophotometrically using the CIELAB colour space. The colour fastness to rubbing, washing, and light, and the water and oil repellency of the dyed fabrics were determined according to valid SIST EN ISO standards. The results showed that the unfinished dyed polyamide 6 fabric undergoes a reversible colour change faster and more clearly than the finished dyed polyamide 6 fabric. The dyed polyamide 6 fabric had good colour fastness to rubbing and domestic and commercial laundering, while the colour fastness to light was poor. In addition, the dyed polyamide 6 fabric was pH-sensitive, despite dye degradation under xenon light, regardless of whether it was finished.

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Polyamide Fibres

Cited by 4 publications

References 0 publications

Synthetic Clothing and the Problem With Odor

Synthetic Clothing and the Problem With Odor

Effect of Core Yarn on Linear Actuation of Electroactive Polymer Coated Yarn Actuators

Design of pH Responsive Textile as a Sensor Material for Acid Rain

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