Controlled Release of Agrochemicals Using pH and Redox Dual-Responsive Cellulose Nanogels

被引：61
作者：
Hou, Xiaobang [1 ,2 ]
Pan, Yuanfeng [3 ]
Xiao, Huining [2 ]
Liu, Jie [1 ]
机构：
[1] North China Elect Power Univ, Dept Environm Engn, 689 Huadian Rd, Baoding 071003, Hebei, Peoples R China
[2] Univ New Brunswick, Dept Chem Engn, 15 Dineen Dr, Fredericton, NB E3B 5A3, Canada
[3] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, 100 Daxue Rd, Nanning 530004, Guangxi, Peoples R China
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2019年 / 67卷 / 24期
基金：
加拿大自然科学与工程研究理事会;
关键词：
pH-responsive; redox-responsive; agrochemicals; nanogel; controlled release; DRUG-DELIVERY; ORAL DELIVERY; HYDROGEL; ACID; STABILITY; ENZYME; PLANTS;
D O I：
10.1021/acs.jafc.9b00536
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
A novel pH and redox dual-responsive cellulose-based nanogel was prepared for the controlled release of agrochemicals. To synthesize the responsive nanogel, palmitoyl chloride and glyoxal were modified on carboxymethyl cellulose sequentially and 3,3'-dithiobis(propionohydrazide) was used as a cross-linker to assemble the nanogel. The morphology, structure, and physical properties of nanogels were characterized with transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), particle size analysis, and zeta-potential measurement. Facing pH and redox stimulation, the nanogel showed reversible sol-gel transitions, indicating good pH- and redox-responsiveness. The nanogel loaded with agrochemicals exhibited high loading capacity and various release behaviors. In addition, the experiment of nanogel on heavy metal ions complexation displayed the potential of improving soil condition while delivering agrochemicals.
引用
收藏
页码：6700 / 6707
页数：8
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