Gan et al. first reported the research situation of seaweed fiber in China. As early as 198 1, the research group used spinning solution containing 5% sodium alginate to prepare calcium alginate fiber by wet spinning. It was found that the concentration of calcium ion in coagulation solution was diluted due to continuous consumption. For the convenience of control, when saturated calcium chloride aqueous solution is used as coagulation liquid, the optimum fiber strength is 0.44~ 1.76 cN/dtex after drying at 60℃ and 2 000 Pa.

Sun Yushan et al. studied the production technology of seaweed fiber in detail in 1990. The strength of the fiber obtained by wet spinning in gas medium reaches 2.67 cN/dtex. In order to improve the chemical stability of calcium alginate fiber, cellulose acetate, polyvinyl alcohol and chitin were used to coat the fiber. The fiber has certain chemical stability and can remain insoluble in physiological saline for two weeks.

2 1 century, with the exhaustion of petrochemical resources and the strengthening of environmental awareness in consumer goods market, natural polymer materials with sustainable development characteristics have become more and more important. Many chemical raw materials are changing from chemical raw materials to natural extraction raw materials, such as natural polymer materials extracted from seaweed plants. Alginate and all kinds of alginate are paid more and more attention, and the research of seaweed fiber is also paid attention to with the support of government departments at all levels, and important progress has been made. At present, China is already a big producer of alginic acid raw materials. With the further efforts of all walks of life, China will certainly reach the world advanced level in the research, development and production of alginate fibers.