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Enhanced Swelling and Responsive Properties of Pineapple Peel Carboxymethyl Cellulose-g-poly(acrylic acid-co-acrylamide) Superabsorbent Hydrogel by the Introduction of Carclazyte
被引:166
作者:
Dai, Hongjie
[1
]
Huang, Huihua
[1
]
机构:
[1] South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
基金:
中国国家自然科学基金;
关键词:
pineapple peel carboxymethyl cellulose;
carclazyte;
superabsorbent;
characterization;
swelling;
NANOCOMPOSITE HYDROGELS;
COMPOSITE HYDROGELS;
IONIC LIQUID;
BLEND FILMS;
CELLULOSE;
ACID;
PH;
SALT;
BEHAVIORS;
STARCH;
D O I:
10.1021/acs.jafc.6b04899
中图分类号:
S [农业科学];
学科分类号:
09 ;
摘要:
The superabsorbent hydrogels were synthesized by grafting acrylic acid and acrylamide onto pineapple peel carboxymethyl cellulose and effect of carclazyte introduction was compared. The structure and morphology of the super absorbents were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, and field emission scanning electron microscopy. Swelling behaviors of the superabsorbents were investigated in distilled water, 0.9% NaCl solution, various salt and pH solutions, as well as surfactant solutions and simulated physiological fluids. The swelling dynamic mechanism of the super absorbents was explained well by Fickian diffusion and Schott's pseudo-second-order models. The introduction of carclazyte effectively improved the swelling capacity of the superabsorbents in various solutions as well as its salt- and pH-sensitivity. The prepared superabsorbents also exhibited excellent sensitivities to various surfactant solutions and simulated physiological fluids, showing potential applications in the biomaterials field.
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页码:565 / 574
页数:10
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