Chinese researchers successfully extract fiber from seaweed

As the main source of raw materials for modern textiles, cotton, hemp, petrochemical, and other fibers are increasingly constrained by resources and environmental costs. After years of research, Chinese researchers have successfully extracted fibers from seaweed, spun silk threads, and woven into cloths in the ocean. Open up the third source of textile fibers.

After four years of trial and error, Xia Yanzhi, deputy director of the State Key Laboratory of New Materials for Textiles and Modern Textiles at Qingdao University, led the R&D personnel to successfully use algae to extract alginate as a raw material, using water as a solvent, and using special equipment to produce strength. High-performance algae fiber and successfully spun into cloth.

Xia Yan said that so far, researchers have been able to extract fiber from a variety of algae, including brown algae, aggregating collagen, algae, carrageenan, or even in the Yellow Sea Bohai Sea near the shore of the accumulation of flooding of Enteromorpha.

In the laboratories of the training base, the reporter saw dyed seaweed fibers, alginate particles, and cloth samples woven with seaweed fibers. Dr. Kong Qingshan, who is involved in the study, said that preparation of seaweed fibers has undergone preliminary and pilot stages, and large-scale production is being prepared.

According to Kong Qingshan's estimation, according to the existing production techniques, one ton of light dried kelp can extract 200 kg to 250 kg of alginate to form 200 kg of fiber, and every 100 g of seaweed fiber can weave a square meter of cloth.

Based on this calculation, the cost of seaweed fiber is initially estimated at 50,000-70,000 yuan per ton. Kong Qingshan said that if seaweed fiber and cotton are blended, more cloth can be woven and the cost is lower, and the cloth made of seaweed fiber is stronger than cotton.

“The limitations of the current land-based and synthetic fibers in terms of environmental protection are becoming more and more prominent. I feel that it is very necessary to find a new type of renewable environmentally friendly fiber material.” Talking about the development of seaweed fibers, the original intention of Xie Yanzhi said.

At present, China consumes about 60 million tons of fiber each year. Its production methods are mainly derived from animal and plant natural fibers such as cotton, hemp, wool, and silk, as well as recycled fibers, and synthetic fibers from petroleum, but with economic development and population growth, The acquisition of fibers is increasingly constrained by the shortage of land and oil resources.

At the same time, biomass fiber is booming in China. In 2009, China's biomass renewable fiber production capacity has reached 1.91 million tons, accounting for 77% of the world's total production capacity.

“China is the largest seaweed aquaculture and processing country in the world, and the production of alginate accounts for more than half of the world, which is very beneficial to the acquisition and large-scale production of seaweed fiber raw materials. At the same time, the production of seaweed fiber raw materials does not occupy oil and land resources. ” said Xia Yan.

Due to the fact that it is taken from the sea, algae fibers are inherently flame-retardant. At the same time, fibers contain a large amount of metal ions, which can effectively shield electromagnetic waves and play a role in radiation protection. Xia Yan said that these favorable characteristics of seaweed fibers combined with good textile processing performance make it not only suitable for ordinary clothing, but also can be used for manufacturing special clothing such as fire fighting clothing, protective clothing and medical clothing.

At present, this R&D technology has been supported by the national “863”, the National Development and Reform Commission textile special project, the National Natural Science Foundation of China, and the conversion of major achievements in Shandong Province. More than ten patents for inventions have been filed, and three have been authorized. More than academicians and well-known experts identified, the results reached the international advanced level.

It is reported that, in order to promote the application of seaweed fiber technology, the home textile company Qingdao Xiyingmen Group has invested in the construction of a large-scale production line. The current production workshop construction is nearing completion, and it is expected that 2011 will enable large-scale industrial production.

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