Properties of wool fiber depends on the physical and chemical categories of it. So properties are two types as Physical properties and chemical properties. Some properties of wool fiber depends on the fiber types. But we know that the basic properties of wool fiber depends on physical and chemical properties of it. So classification of wool fiber properties are as follows.
- Physical properties of wool
- Chemical properties of wool
Properties of wool fiber.
- Strength: it’s stronger than silk. Once wet wool looses regarding twenty fifth of its strength. Longer the fibre the somebody are going to be the strength of yarn.
- Resiliency: Wool is extremely resilient and involves its original form once hanged once wrinkled or created.
- Stretchability: Wool is extremely elastic. It’s ten to half-hour stretched once dry. It is also forty to five hundredth once wet upon receiving pressure upon drying it regarding original dimensions.
- Shrink ability: Wool is resistant shrinkage. But long exposure to wetness could cause shrinkage.
- Effect of friction: Friction can soften the wool fibre. Particularly once wet and so is advantageous in maintaining sleek, soft texture of materials.
- Crimps: Wool fibre is additional or less wavy and has twists. This waviness is termed as ‘crimp’. Finer the wool the additional are going to be the crimps in it. Merino sheep wool has thirty crimps per in, whereas coarse wool has one or 2.
- Effect of moisture: Wool is that the most absorptive in nature. It will absorb up to five hundredth of its weight. It also carry upto 2 hundredth weight, while not giving the sensation of being wet. Upon drying it losses wetness. It slowly preventing speedy evaporation so avoiding chilling feel to the user. It absorbs perspiration once violent exercise and guards the body against fulminant amendment in temperature.
- Heat conductivity: Wool fibre may be a half may be a poor conductor of warmth. So the materials made up of the fibre square measure thought of most fitted as winter wear.
- Felting: Wool fibres interlock and contract once exposed to heat, moisture, and pressure. The size like exterior of the fibres contributes to felting.
- Action of acids: Dilute acids have very little result however either hot or focused acids weaken or dissolve the wool fibres.
- Action of alkalis: Alkalis tend to create whereas wool xanthous, robust solutions of washing soda once heated destroys the fibre hydroxide is extremely injurious to the wool fibre. but mineral and ammonia haven’t any harmful influence on wool.
- Action of bleaching agents: robust bleaching agents like salt have harmful effects on wool., permanganate, metal peroxide and peroxide but will safely be used for bleaching and stain removal.
- Effects of lepidopteran and mildew : Wool is definitely broken by moths that is why throughout storage of woolen clothes special case is required. but mildews donot effects clothes.
- Finishes given to wool: Felting, fulling, lepidopteran proofing, crabbing, decanting, london shrinking, napping, singeing and steaming.
Wool blends: Wool polyster, wool acrylic, wool nylon, silk and wool.