Thermo-sensitive Hydrogel Incorporating Maleic Anhydride Modified Microcrystalline Cellulose

The thermo-sensitive hydrogel incorporating maleic anhydride modified mcirocrystalline cellulose was prepared by two steps. At first, the mixture of maleated and fumarated celluloses were produced by a solvent-free procedure, in which the biopolymer was added to molten maleic anhydride. Secondly, th...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-02, Vol.446 (2), p.22055
Main Authors: Zhang, Ting, Zheng, Nan, Luo, Jianfang, Cai, Huiling, Li, Yanghao, Zhai, Jia, Peng, Xinyi
Format: Article
Language:English
Subjects:
Acrylamide
Aqueous solutions
Biopolymers
Cellulose
Coils
Crystalline cellulose
Deionization
Hydrogels
Maleic anhydride
Methylene blue
Photopolymerization
Sodium hydroxide
Temperature dependence
Urea
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Summary:The thermo-sensitive hydrogel incorporating maleic anhydride modified mcirocrystalline cellulose was prepared by two steps. At first, the mixture of maleated and fumarated celluloses were produced by a solvent-free procedure, in which the biopolymer was added to molten maleic anhydride. Secondly, the photo-polymerization of n-isopropyl acrylamide (NIPAM) with the modified biopolymer was carried out in water/NaOH/urea/thiourea solution by using 1173 as the photo-initiator. The derivatives were characterized by FTIR and SEM. It was a clear temperature dependence on the volume of the grafted hydrogel in deionized water that generated by the coil-to-globule transition of poly (NIPAM) in aqueous media from the lower critical solution temperature (LCST) of PNIPAM to the upper critical solution temperature (UCST). From the absorbance of the gel to methylene blue, it was shown that the quasi-second-order kinetics could fit the experimental data well.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/446/2/022055