It is understood that Shanghai Tongjieliang Biomaterials Co., Ltd. and Shanghai Green Plastic Biotechnology Co., Ltd., under the leadership of Renji, a professor and doctoral tutor of Tongji University, have successfully combined polytechnics, research institutes and textile companies in Shanghai and Zhejiang. Lactic acid as a raw material successfully produced fiber and its series of underwear and environmental protection bags, and formed the industrialized manufacturing technology of polylactic acid and its textiles with independent intellectual property rights in China. It has been put into trial at the Shanghai World Expo and has been favored by tourists.
What is polylactic acid eco-friendly textiles?
Biomass material - polylactic acid is produced by biofermentation of lactic acid through agricultural fermentation of cassava, sweet sorghum and other non-food crops as well as straw, straw and other agricultural wastes, and then polymerized. Polylactide fiber is a biosynthetic fiber made from polylactic acid resin through conventional spinning process. Its physical properties are similar to those of nylon and polyester. Its permeability and hand feel are better than those of polyester, it is not easy to static electricity, and it has good biocompatibility and comfort. Can be made into multifilament, monofilament, staple fiber, knitted fabric, non-woven fabric, etc., can be used for underwear, baby diapers, feminine hygiene products, coats and socks, and medical textiles such as doctors, nurses, patients wearing surgical gowns, Protective clothing, surgical coverings, bed sheets, etc. Because the raw material comes from pure natural, has the advantages of anti-allergic, easy to wash, wearing fluffy and comfortable, underwear made of this material is like the second layer of human skin.
The underwear made of polylactic acid fiber has the advantages of loose comfort, breathability, moisture absorption, sweat absorption, etc.; the non-woven fabric bag made of polylactic acid fiber is biodegradable and environmentally friendly compared with the traditional polypropylene and polyester non-woven bag. Features, can replace plastic bags, paper bags and so on.
The invention of bio-polylactic acid will open up the green industry chain
According to reports, polylactic acid and traditional petroleum-based plastics have similar or similar performances and hygienic properties, and they can be quickly degraded in the natural environment into easily dissipated fragments or crumbs after completion of their use. Over time, it degrades completely into carbon dioxide and water and eventually returns to nature. The promotion and application of polylactic acid is of great significance in facing the "three rural issues", replacing non-renewable fossil resources, relieving "white pollution" and "greenhouse effect", and is a typical low-carbon product.
Of all the materials that can be used as biomass plastics, polylactic acid is the most promising. On the one hand, due to the availability of raw materials, easy to large-scale intensive production, more important is the excellent physical properties and plasticity of polylactic acid products, so that polylactic acid products can completely replace the traditional petroleum-based plastic in most of the current field. In addition, since L-lactic acid, a monomeric raw material of polylactic acid, is an endogenous active substance of the human body, the polylactic acid product is non-toxic to the human body, is not repelled and can be absorbed by the human body, and can be used for manufacturing medical orthopaedic materials and drug carriers and is safe. Used in the human body.
At present, polylactic acid has become a global investment hotspot. It is estimated that in the period of 2009-2012, as the production cost of polylactic acid approaches that of traditional plastics and market applications, popularization will enter a peak period, and the polylactic acid construction boom will begin globally.
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