Preparation And Adsorption Properties Of The Seaweed Fiber

Study on the viscosity of sodium alginate solution shows that the viscosity increases along with the increase of concentration,the minimum appears in 40-50℃and it is more obvious as the concentration higher.The activation energy of viscous flow changes obviously at the around of the minimum.The liquid crystal structure exists in the sodium alginate solution and it is sandwich.Alginate fibers of better performance were achieved via wet-spinning mechanism when the concentration of the sodium alginate for 4-6%,the temperature for 50-55℃,the concentration and temperature of coagulation bath for 4-5%and 40-50℃respectively as well as suitable spinning speeds and tensile proportion,through the stretch performance test and the structure analysis.The hygroscopy text of alginate fiber shows that the absorption rate of physiological brine is 10 times higher than that of water which also indicates that the alginate fiber can be used as wound dressing.The result of the TG/TGA shows the degradation of alginate fiber is near to 45%in the round of 260℃as the decomposition to stable intermediary products.The remnant quality rate above 30%after 700℃means the carbide of alginate fiber oxygenate to CaO and so on.The flame property test shows the alginate fiber has the essence of flame-retardant. The LOI of the alginate fiber is 34%and the result of CONE analysis shows that the heating release rate,total heating release and the oxygen waste quantity are lower,the combustion time is longer,and the residue carbonization degree is higher.The alginic acid fiber was prepared to use to the adsorption research on Cu²⁺ and Zn²⁺.The time and temperature affect the adsorption not apparently while the waste quantity of fiber,the initial pH and concentration of Cu²⁺/Zn²⁺ solution obviously.The adsorption models of Langmuir and Freundlich can simulate the adsorption process well.The knitting yarn of alginate fiber and the weave yarn and fabric of combed cotton/alginate fiber were achieved.