Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules
Thermo-responsive release emamectin benzoate microcapsules were successfully prepared with a polydopamine (PDA)-g-poly(N-isopropylacrylamide) (PNIPAm) multifunctional layer. Preparation of emamectin benzoate microcapsules was first studied by emulsion interfacial-polymerization using PDA as a wall m...
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doaj-918adbe22d7d41a3afb32caee41238042020-11-24T23:55:58ZengMDPI AGPolymers2073-43602017-09-019941810.3390/polym9090418polym9090418Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsulesYue Shen0Yan Wang1Xiang Zhao2Changjiao Sun3Bo Cui4Fei Gao5Zhanghua Zeng6Haixin Cui7Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaThermo-responsive release emamectin benzoate microcapsules were successfully prepared with a polydopamine (PDA)-g-poly(N-isopropylacrylamide) (PNIPAm) multifunctional layer. Preparation of emamectin benzoate microcapsules was first studied by emulsion interfacial-polymerization using PDA as a wall material. Then the amino-terminated PNIPAm was grafted on the PDA layer by its amino group in aqueous solution. Physicochemical characterization of microcapsules was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and dynamic light scattering (DLS). Kinetic study of emamectin benzoate release showed that the microcapsules exhibit sustained- and controlled-release properties. The multifunctional layer can release emamectin benzoate easily when the temperature was below the lower critical solution temperature (LCST). In contrast, when the temperature increased above the LCST, the release rate was reduced. The results indicated that these microcapsules with excellent thermo-sensitivity would be promising in the research field of pesticide microcapsules.https://www.mdpi.com/2073-4360/9/9/418polydopaminepoly(N-isopropylacrylamide)thermo-responsivemicrocapsulecontrolled-release |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yue Shen Yan Wang Xiang Zhao Changjiao Sun Bo Cui Fei Gao Zhanghua Zeng Haixin Cui |
spellingShingle |
Yue Shen Yan Wang Xiang Zhao Changjiao Sun Bo Cui Fei Gao Zhanghua Zeng Haixin Cui Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules Polymers polydopamine poly(N-isopropylacrylamide) thermo-responsive microcapsule controlled-release |
author_facet |
Yue Shen Yan Wang Xiang Zhao Changjiao Sun Bo Cui Fei Gao Zhanghua Zeng Haixin Cui |
author_sort |
Yue Shen |
title |
Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules |
title_short |
Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules |
title_full |
Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules |
title_fullStr |
Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules |
title_full_unstemmed |
Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules |
title_sort |
preparation and physicochemical characteristics of thermo-responsive emamectin benzoatemicrocapsules |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2017-09-01 |
description |
Thermo-responsive release emamectin benzoate microcapsules were successfully prepared with a polydopamine (PDA)-g-poly(N-isopropylacrylamide) (PNIPAm) multifunctional layer. Preparation of emamectin benzoate microcapsules was first studied by emulsion interfacial-polymerization using PDA as a wall material. Then the amino-terminated PNIPAm was grafted on the PDA layer by its amino group in aqueous solution. Physicochemical characterization of microcapsules was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and dynamic light scattering (DLS). Kinetic study of emamectin benzoate release showed that the microcapsules exhibit sustained- and controlled-release properties. The multifunctional layer can release emamectin benzoate easily when the temperature was below the lower critical solution temperature (LCST). In contrast, when the temperature increased above the LCST, the release rate was reduced. The results indicated that these microcapsules with excellent thermo-sensitivity would be promising in the research field of pesticide microcapsules. |
topic |
polydopamine poly(N-isopropylacrylamide) thermo-responsive microcapsule controlled-release |
url |
https://www.mdpi.com/2073-4360/9/9/418 |
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