Saturday, 24 December 2016

What is the Most Eco-friendly Fiber

How do we measure Eco-friendliness

A worldwide known measure is the estimation of Carbon Footprint for a particular activity. Carbon Footprint is the  amount of carbon dioxide released into the atmosphere as a result of the activities of a particular individual, organization, or community.

Measuring carbon footprint of textiles fibres involves the energy needed to make that fiber and then energy needed to weave that fiber into the yarn.

The following table gives an idea:

Energy used in MJ per kg of fiber

1. flax fiber: 10
2. Cotton: 55
3. Wool: 63
4. Viscose: 100
5. Polypropylene: 115
6. Polyester: 125
7. Acrylic: 175
8. Nylon: 250

Interestingly Cotton emits 5.90 ton of CO2 per ton of spun fiber. The same values for organic cotton ( India) are 3.80 and 2.35 respectively.

Thermal energy required per meter of weaving of cloth is 4,500-5,500 Kcal and electrical energy required per meter of cloth is 0.45-0.55 kwh and is independent of the nature of fiber. 

Processing of fibers, however, use a lot of chemicals and copious amount of water. 


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