Biomass 12 hours easy to change clothes
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Prof. Zhang Xiaona from Wuhan University used the most common and economical solution of sodium hydroxide and urea as the cellulose solvent. After precooling to -12°C, it quickly dissolved cellulose in 1-5 minutes to prepare a transparent cellulose solution. , And then produce a new type of regenerated cellulose fiber, the entire production cycle is only 12 hours. This new type of low-temperature dissolution technology not only breaks through the traditional method of heating, but also produces no volatiles. The waste liquid is easily recycled and urea can be recycled. On March 29th, Zhang Xiaona won the 2011 Anselm Payne Award for her achievement. She also became the first Chinese to win the award. This award is the highest prize in the field of international cellulose and renewable resource materials.
Man-made fibers are important raw materials for the textile industry. In the production of fibers from biomass, the raw materials are first dissolved. The traditional method uses high-temperature dissolution. The cellulose is placed in sodium hydroxide and carbon disulfide solution and heat-treated for more than ten hours. The entire fiber production cycle is about one week, and carbon disulfide is a highly contaminated raw material that is difficult to recycle.
Zhang Xiaona team established a new mechanism for the dissolution of macromolecules and solvents to form new hydrogen-bonded conductors at low temperatures, and developed a batch of new functional materials based on biomass energy and biodegradable materials, clarifying their microstructures. The effect on the macroscopic properties and functions of the material has been initially achieved by the "green" industrialization test of low temperature dissolved cellulose spinning.
The Ansam Penn Prize judges believe that the new theory and technology for the low-temperature dissolution of the "green" solvent created by Zhang Xiaona is a major breakthrough in the field of renewable resource materials.
Zhang Haona has long been committed to the basic and applied research of natural polymer materials science in biomass energy resources. She led the team to transform agricultural wastes such as cotton linters, bagasse, shrimp husks, crab shells, and bean dregs into new practical materials through polymer physics methods and green technologies. (Science & Technology Daily)
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