Preparation and properties of multifunctional polyaspartic acid/waste paper fiber-based superabsorbent composites

被引:13
|
作者
Sang, Wutang [1 ]
Cui, Shuzhen [1 ]
Wang, Xiangbing [1 ]
Liu, Bei [1 ]
Li, Xiaoxia [1 ]
Sun, Kanjun [2 ]
Peng, Hui [1 ]
Ma, Guofu [1 ]
机构
[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecofunct Polymer Mat, Key Lab Polymer Mat Gansu Prov,Minist Educ, Lanzhou 730070, Peoples R China
[2] Lanzhou City Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2022年 / 10卷 / 05期
基金
中国国家自然科学基金;
关键词
Superabsorbent composites; Polyaspartic acid; Waste paper fibers; Water retention; CARBOXYMETHYL CELLULOSE; SWELLING BEHAVIORS; POLYMER HYDROGELS; SLOW-RELEASE; REMOVAL; ACID; FABRICATION; EFFICIENT; OXIDE;
D O I
10.1016/j.jece.2022.108405
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Superabsorbent composites (SACs) are widely used for agricultural applications acts as a "miniature soil moisture reservoir " for plants. While these substrates have excellent water retention properties, they often suffer from production costs and a variety of environmental challenges. Herein, polyaspartic acid (PASP), waste paper fibers (WPF) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) graft copolymerize acrylic acid (AA) to pre-pare a novel multifunctional PASP-g-P(AA-co-AMPS)/WPF SACs. The synthesis conditions use to prepare the PASP-g-P(AA-co-AMPS)/WPF SACs are optimized, including PASP content, mass ratio of AMPS and AA, initiator content and cross-linker content. In addition, the water retention, salt and acid resistance, reversible swelling and temperature sensitivity of SACs are also investigated and analyzed in detail. Due to the uniform distribution and the rich pore structure, it has a maximum equilibrium adsorption capacity of optimal SACs in distilled water, tap water and NaCl solution (0.9 wt%) are determined to be 731.0 g g(-1), 189.2 g g(-1) and 81.4 g g(-1), respectively. Thus, PASP-g-P(AA-co-AMPS)/WPF SACs exhibit excellent environmental tolerance and provide a promising strategy for sustainable agriculture and desertification control.
引用
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页数:11
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