Yuzhi Wu1, Cunzhen Geng1,*, Chaochao Cui2, Zhefeng Xin2, Yanzhi Xia1, Zhixin Xue1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1199-1208, 2023, DOI:10.32604/jrm.2022.022976
Abstract The sulfate groups in agar structure played a good role in the formation of fiber. However, commercially available agar is usually extracted from red algae by alkali treatment to decrease the content of sulfate group for the purpose of high gel strength. In this paper, an alkali-free method of agar extraction from Gracilaria lemaneiformis was proposed for the wet-spinning purpose. This method is environmentally friendly, reduces the extraction steps, saves energy, and reduces the production cost of agar fiber. The improved agar preparation process not only has higher agar yield, but also has higher molecular weight and sulfate group content,… More >
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