Techniques Seaweed Fiber Spinning Solution Was Prepared By Kelp

As one of marine biomass materials, alginates fiber was prepared by wet spinning technology. Sodium alginate which exists in brown seaweed cell wall and extracellular matrix can be used as a raw material for alginate fibers. It usually extracted by alkali extraction methord. Alginates fiber has good prospects in many fields due to it’s outstanding performance. However some disadvantages of sodium alginate production also exist, such as high water consumption, high energy consumption and huge wastewater emissions process, which are hindering the development of alginate fiber. We focused on the extraction of alginate from the brown seaweed and preparation of sodium alginate spinning solution in this paper. In order to solve the problem, we explored alginates fiber preparation integration technology, shorten the process of preparation of sodium alginate wet spinning solution directly by the seaweed.Through the measurements of ICP-AES and ICP-MSthe metallic elements(Li、Na、 K、Ca、Mg、Sr、Cr、As、Cd、Hg、Pb) of alginate of Laminaria in Yantai sea area were tested. The result shows that the content of potassium alginate, calcium alginate, magnesium alginate and sodium alginate is22.2%,14.6%,11.4%,10.5%(wt%) respectively. The optimum condition for the extraction of the sodium alginate was investigated through the orthogonal experiment:A. The extraction conditions of maximum extraction yield is use7times of2%concentration Na2CO3solution at60℃in3h, the maximum extraction yield is33.8%B. The extraction conditions of largest molecular weight is use7times of2%concentration Na2CO3solution at40℃in2h, the largest molecular weight is1.85×105g/mol. Lastly, the rheological properties of those two extractions by using method B were compared. The results turned out that the seaweed extract after acid gel and neutralizing is the best candiates for spinning solution. The lOum diameter alginates fiber was prepared by wet spining technology.