Читать книгу Sustainable Practices in the Textile Industry - Группа авторов - Страница 16

Natural dyes are recommended to be applied on textile materials. Following points support the use of natural dyes on a large scale.

1 Eco-friendly: Natural dyes are extracted from natural sources therefore they are environment safe.

2 Biodegradable: These dyes are capable of being decomposed by microorganisms.

3 Renewable: Replaced by the new material obtained from nature.

4 No health hazard/Non-toxic: Natural origin of these dyes makes them harmless.

5 Variety of shades: Varieties of color, shades and hues present in nature itself.

6 Soothing, soft and lustrous color: Natural dyes are soft and relaxing.

7 Utilization of waste material: Many agriculture waste products can be used in the dyeing process.

8 Antibacterial/UV Protective: Naturally dyed fabrics get special properties like antibacterial and UV protection.

As there are many advantages in using natural dyes but they also have some drawbacks:

1 Expensive: Natural dyes are expensive due to being limited in source.

2 Faded easily: Sometimes their poor attachment on fabric makes them fade easily.

3 Difficult to produce/collect: Collection is somewhat difficult in large amounts.

4 Time consuming: The complete process like collection of dye takes long time.

5 Reproducibility of shades is difficult to control: Natural dyes produced by secondary metabolic activities of plants or by very special processes in other animals, which depend on climate conditions, age and seasonal variations. Thus, one particular shade cannot be achieved again and again by a single dye.