Robust multifunctional microcapsules with antibacterial and anticorrosion features

Chong, Yong Bing; Sun, Dawei; Zhang, Xin; Yue, Chee Yoon; Yang, Jinglei

doi:10.1016/j.cej.2019.04.139

Cited by 57 publications

(13 citation statements)

References 41 publications

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“…The controlled release behavior of pesticides has attracted considerable attention in the field of pesticide delivery owing to their excellent sustained‐release properties 8–11 . This behavior can help to prevent excessive and repeated use of pesticides, as well as environmental issues by minimizing their potential risk to nontarget organisms, 12,13 and also provides a promising approach to address the limitations that neonicotinoids possess.…”

Section: Introductionmentioning

confidence: 99%

Bio‐based clothianidin‐loaded solid dispersion using composite carriers to improve efficacy and reduce environmental toxicity

Guo

Ren

et al. 2021

Pest Management Science

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BACKGROUND Neonicotinoids comprise one of the most extensively used classes of pesticides worldwide owing to their broad insecticidal spectrum and excellent biological performance. However, their toxicity to honeybee (Apis mellifera Linnaeus) and silkworm (Bombyx Mori) limits their further application. To address this issue, clothianidin as a model neonicotinoid was developed into a novel controlled‐release formulation employing advantaged solid dispersion (SD) technology using composite carriers. RESULTS In this research, the clothianidin‐loaded SD was characterized using integrated methods to elucidate its formation mechanism, showing that clothianidin was embedded into the carrier homogeneously in small crystalline entities. The composite carriers, which are both renewable and environmentally friendly, can significantly prolong the release of clothianidin from seven to 25 days, compared with that of PEG 8000 as a single carrier. Based on the excellent controlled release profiles, it reduced the acute toxicity to A. mellifera and B. mori by 57.68‐ and 85.32‐fold (respectively) compared with that of the conventional formulation. Furthermore, the SD displayed favorable efficacy and persistency against Asian citrus psyllid (Hemiptera: Psyllidae). CONCLUSION This novel strategy opens up a simple and powerful avenue for improving efficacy and promoting the environmental safety of neonicotinoid insecticides to be used in sustainable crop protection.

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Section: Introductionmentioning

confidence: 99%

Bio‐based clothianidin‐loaded solid dispersion using composite carriers to improve efficacy and reduce environmental toxicity

Guo

Ren

et al. 2021

Pest Management Science

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“…Herein, we demonstrate that different acid‐labile linkages can be used in the structure of polymers to protect metals against severe short‐term or mild long‐term conditions. 8HQ was selected as a model payload because it is an excellent inhibitor for steel 58–60 . We conjugated 8HQ with an acrylate through β ‐thiopropionate and ester linkages to obtain very labile and moderately labile functional monomers, respectively.…”

Section: Introductionmentioning

confidence: 99%

Stimuli‐responsive polymeric additives for anticorrosion

Auepattana‐Aumrung

Phakkeeree

Crespy

2021

J of Applied Polymer Sci

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Corrosion is a significant issue for metals and alloys items because it critically affects their lifetimes. To protect the metal from corrosion, corrosion inhibitors can be added into coatings, but the inhibitor can leach into the environment. Polymer‐corrosion inhibitor conjugates are developed to solve this problem. However, corrosion can occur in various fields of applications, which then need a different level and type of metal's protection. β‐thiopropionate and ester linkages between polymer and inhibitor are selected as model for very labile and moderately labile linkages, respectively. The rate of inhibitor's release is controlled by the linkage of conjugated payloads. Corrosion measurements indicated that polymers with the β‐thiopropionate linkage are suitable for severe corrosion and short‐term applications, whereas the polymers with ester linkage can be used for mild corrosion and long‐term applications.

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“…The controlled release behavior of pesticides has attracted considerable attention in recent years, 12–15 as sustained‐release properties can help to address the limitations of pesticides. Microencapsulation has garnered much recent attention in pesticide formulation 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Combination of modified biochar and polyurea microcapsules to co‐encapsulate a fumigant via interface polymerization for controlled release and enhanced bioactivity

Ren

Hao

Fang

et al. 2021

Pest Management Science

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BACKGROUND Soil fumigants—the most effective agrochemicals for managing soil‐borne diseases—have been used extensively. However, high volatility, moderate toxicity and insufficient effective duration considerably limit their application. In the present study, interface polymerization was used to combine modified biochar (BC) and polyurea microcapsules (MCs) to co‐encapsulate allyl isothiocyanate (AITC), developing a model fumigant for controlled release (AITC@BC‐MCs). RESULTS The physical characteristics of BC modified by sand‐milling were significantly improved. In addition, chemical properties and morphological features of AITC@BC‐MCs characterized by integrated methods revealed successful preparation of BC‐MCs. Compared with monolayer MCs, BC‐MCs could significantly delay AITC release owing to the composite obstruction effect. Moreover, modifying BC endowed the cargo molecules with a pH‐responsive release property. Additionally, this composite showed a longer persistent duration by prolonging AITC degradation half‐life, which was 3.2–3.5‐fold greater than that of the AITC technical concentrate under different soil conditions. Finally, the control efficacy of the AITC@BC‐MC against pathogens, including nematodes and fungi, as well as against weeds was significantly enhanced at the same dose, but the composite did not inhibit seed germination and growth after 10 days when fumigated soil was aerated. CONCLUSION Construction of a composite encapsulation system enhanced pesticide efficacy, reduced dose via controlled release and delayed fumigant degradation in soil, indicating the great potential of this strategy for developing an effective and environmentally friendly fumigant formulation. © 2021 Society of Chemical Industry

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Robust multifunctional microcapsules with antibacterial and anticorrosion features

Cited by 57 publications

References 41 publications

Bio‐based clothianidin‐loaded solid dispersion using composite carriers to improve efficacy and reduce environmental toxicity

Bio‐based clothianidin‐loaded solid dispersion using composite carriers to improve efficacy and reduce environmental toxicity

Stimuli‐responsive polymeric additives for anticorrosion

Combination of modified biochar and polyurea microcapsules to co‐encapsulate a fumigant via interface polymerization for controlled release and enhanced bioactivity

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