Anisotropic hydrogels show excellent functionality due to their ordered arrangement of polymer chains.The anisotropic cellulose double cross-linked cellulose hydrogels were prepared by combining double crosslinking and stretching treatment using sisal cellulose as raw material and LiOH/urea aqueous solution as solution system.The results showed that cellulose hydrogel film with a stretch ratio of 1.9 exhibited excellent mechanical properties,and its tensile strength could reach 2.98MPa,which was 105% higher than that of the unstretched hydrogel film.In addition,the film exhibited good light polarization effect,displaying a bright rainbow pattern under polarized light.The hydrogel had a good adsorption capacity for Cu2+,and the maximum adsorption capacity for 100mg/L Cu(NO3)2 solution was 65.2mg/g.This study provided some ideas for broadening the application of anisotropic cellulose hydrogels.
Zhu Weizhi, Li Wenjing, He Mei, Wu Tianyu, Cheng Fangchao
. Preparation and application of anisotropic cellulose double-crosslinked hydrogels[J]. New Chemical Materials, 2024
, 52(3)
: 226
-230
.
DOI: 10.19817/j.cnki.issn1006-3536.2024.03.047
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