Wearing cotton clothes is not only breathable and skin friendly, but also reduces CO2 emissions. Yesterday, the "climate change and low carbon textile high level forum" was held in Shanghai, and more than ten academicians and experts from all over the country tracked the "carbon footprint" of all kinds of textiles. Compared with all kinds of chemical fiber fabrics, cotton clothing is a master of energy saving and emission reduction, especially organic cotton fabrics, which can reduce CO2 emissions by about 70%.

　 Cotton and linen fabrics are more environmentally friendly.

You know, a cotton white long sleeved shirt with a weight of more than 200 grams. cotton In the whole life cycle of farming, textile manufacturing, transportation, distribution, consumption and waste gas treatment, the carbon emission is about 10.75 kilograms, 50 times the weight of the shirt itself. Zhou Xiang, a member of the Chinese Academy of engineering and professor of Donghua University, pointed out that in the international and domestic dynamics of reducing greenhouse gas emissions in the textile industry, it is estimated that around 60 billion kilograms of fabric is produced each year, with an estimated consumption of 1 trillion kilowatt hours of electricity and up to 9 trillion liters of water. The entire textile industry is one of the largest greenhouse gas emissions industries on the planet.

However, the amount of CO2 emitted from producing different fabrics is different. For example, the production of CO2 of 1 tons of synthetic fiber is much more than that of producing natural fiber cotton or hemp. The CO2 emission of acrylic fiber and nylon clothing is more during the whole production process. In the production process of natural fiber, especially organic cotton, CO2 emission is relatively small. Data show that in the United States, every ton has Machine cotton The carbon emission is 60% less than that of traditional cotton. If organic cotton produced with renewable energy can reduce CO2 by 90%,

The potential to reduce carbon emissions during laundry washing is also great. For example, if you wash clothes with a washing machine, if the water temperature is 30 degrees, it will be less than 100 grams CO2 at 40 degrees centigrade.

　　 Straw fiber Ready-made clothes

In order to reduce the overall carbon emissions of the textile industry, in addition to producing more cotton and linen fabrics, the proportion of chemical fiber fabrics should be greatly reduced. At present, scientists in various countries are actively studying biomass polyester fiber. Biomass fibers are mainly derived from plants, crops, agricultural wastes and by-products. For example, corn or other grain starch is converted into sugar after fermentation, and then lactic acid bacteria is made into lactic acid. After polymerization, it is melted and melted, and finally made into corn fiber bedding, and can be made into polylactic acid fiber automotive interior decoration.

The annual burning of farmland straw in the suburbs of Shanghai is also expected to become a source of biomass for all kinds of clothing materials. Jiang Shicheng, academician of the Chinese Academy of engineering, told reporters that in 5 years, the key technology of straw fiber production in China will be a breakthrough. In another 10 years or so, straw fiber products are expected to enter the industry and eventually decorate the lives of ordinary people.