Synergistic Effect of Hydrogen Bonds and Chemical Bonds to Construct a Starch-Based Water-Absorbing/Retaining Hydrogel Composite Reinforced with Cellulose and Poly(ethylene glycol)

被引：33
作者：
Gao, Longfei [1 ]
Luo, Huiyuan [1 ]
Wang, Qian [1 ]
Hu, Guirong [1 ]
Xiong, Yuzhu [1 ]
机构：
[1] Guizhou Univ, Dept Polymer Mat & Engn, Guiyang 550025, Peoples R China
来源：
ACS OMEGA | 2021年 / 6卷 / 50期
基金：
中国国家自然科学基金;
关键词：
SLOW-RELEASE; SODIUM ALGINATE; SUPERABSORBENT POLYMER; NITROGEN-FERTILIZER; NANOCOMPOSITE; NANOCRYSTALS; FABRICATION; ADSORPTION; RETENTION;
D O I：
10.1021/acsomega.1c05614
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The hydrogel prepared by graft copolymerization of starch (ST) and acrylamide (AM) is a commonly used absorbent material; however, due to their irregular network structure and a limited number of hydrophilic groups, starch-based hydrogels have poor water absorption and water retention. To overcome this, here, we provide a new preparation method for starch-based hydrogels. Using cerium ammonium nitrate (CAN) as an initiator, the starch-acrylamide-cellulose (CMC)/poly(ethylene glycol) (S-A-M/PEG) superabsorbent hydrogel was prepared by graft copolymerization. The starch-acrylamide-cellulose/poly(ethylene glycol) hydrogel network is constructed through the synergistic effect of hydrogen bonds and chemical bonds. The experimental results showed that the starch-acrylamide-cellulose/poly(ethylene glycol) superabsorbent hydrogel has a complete network structure that does not easily collapse due to its superior mechanical properties. The water swelling rate reached 80.24 times, and it reached 50.61% water retention after 16 days. This hydrogel has excellent water-absorbing and water-retaining properties, biocompatibility, and degradability, making it useful for further studies in medical, agricultural, and other fields.
引用
收藏
页码：35039 / 35049
页数：11
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