Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 67, Issue 24, Pages 6700-6707Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.9b00536
Keywords
pH-responsive; redox-responsive; agrochemicals; nanogel; controlled release
Funding
- Fundamental Research Funds for the Central Universities [2018QN089]
- Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [2018k001]
- NSF China [21466005, 51379077]
- NSERC Canada
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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.
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