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Chapter 2

FSN 101 Chapter 2: TextilesWeek2Reading

3 Pages

Course Code
FSN 101
Luann Lafrenz

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find more resources at oneclass.com Sept. 20 2015 Textiles Week 2 - Reading Emily Moreno Comfort and Safety Properties • The complexities of comfort depend on characteristics such as absorbency, heat retention, density and elongation • Absorbency is the ability of a fibre to take up moisture from the body or from the environment. It is measured as moisture regain where the moisture in the material is expressed as a percentage of the weight of the moisture-free material. • Hydrophobic fibres have little or no absorbency • hydrophilic fibres tend to be oleophilic - meaning they have strong attraction for oil • Hygroscopic fibres absorb moisture without feeling wet - absorbency is related to static buildup; problems with static are more likely to develop in hydrophobic fibres because they do not contact electrons readily • Fibres that have good absorbency also tend to have good dyeabilty - they are receptive to coloration by dyes. They also tend to be good electrical conductors. • Absorbent fibres to not build up static charge readily and do not attract lint or create problems with static cling. • Wicking is the ability of a fibre to transfer moisture along its surface • Heat or thermal retention is the ability of a textile to hold heat - this property is affected by fibre, yarn and fabric structure and layering of fabrics • Heat conductivity is the ability to transfer heat through a fabric • Heat sensitivity describes a fibre’s reaction to heat • Flammability describes how a fabric reacts to ignition sources and how it burns • Density or specific gravity is a measure of fibre weight per unit volume • Allergenic potential is the ability to cause physical reactions such as skin redness resulting from exposure to the fibre Appearance-Retention Properties • Resiliency is the ability of a textile to return to its original shape after bending, twisting or crushing • Compressibility is resistance to crushing • Loft or compression resiliency is the ability to spring back to the original thickness after being compressed • Dimensional stability is the ability of a fabric to retain its original size and shape through use and care, which is desirable - including the properties of shrinkage resistance and elastic recovery Shrinkage resistance is the ability of a fabric to retain its original dimensions throughout • care. It is related to the fabric’s reaction to moisture or heat. • Elasticity or elastic recovery is the ability of a textile to return to its original dimension or shape after elongation it is measured as the percentage of return to original length • Aging resistance is resistance to deleterious changes over time • Mildew resistance is the resistance to the growth of mould, mildew or fungus Moth resistance is resistance to insect damage, including moths beetles, crickets, roaches • and spiders Resistance to Chemicals • Resistance to chemicals and chemical reactivity determines the appropriateness of care procedures and end uses for fibres as well as selection of appropriate dyes and finishes for fabrics and products find more resources at oneclass.com find more resources at oneclass.com Sept. 20 2015 Textiles Week 2 - Reading Emily Moreno • Acids are compounds that yield hydrogen ions to alkalis in chemical rections • Alkalis are compounds that remove hydrogen ions from acids and combine with the acid in
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