Preparation and characterisation of polylactic acid modified polyurethane microcapsules for controlled-release of chlorpyrifos

Zheng, Ting; Chen, Kui; Wanyu, Chen; Wu, Bin; Yong, Sheng; Xiao, Yao

doi:10.1080/02652048.2019.1599075

Cited by 18 publications

(10 citation statements)

References 9 publications

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“…Furthermore, a strong absorption peak corresponding to the C–O stretching vibration appeared at 1250 cm –1 . These results indicate that the successful reaction between MDI and TEOA converted the N=C=O group into a N–C=O group and an ester bond was also formed; similar results were reported by Zheng et al 32 Moreover, the methyl and methylene absorption peaks were significantly less intense in the spectrum of the avermectin B2 microcapsules than for the technical avermectin B2 microcapsule sample, indicating that avermectin B2 had been successfully encapsulated by the capsule wall generated upon the reaction of MDI with TEOA.…”

Section: Resultssupporting

confidence: 87%

Preparation and Characterization of Avermectin B2 Microcapsules and Effective Control of Root-Knot Nematodes

Wang

Yan

et al. 2023

ACS Omega

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Polyurethane microcapsules of avermectin B2 were prepared by means of interfacial polymerization with methylene diphenyl diisocyanate as the wall material and triethanolamine as the initiator. The microcapsules were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The surfaces of the microcapsules were found to be smooth and almost spherical, and the encapsulation efficiency was high. The avermectin B2 microcapsules exhibited a good diffusion-controlled sustained-release performance, giving a cumulative release rate of 91.81%. The results indicated that the polyurethane capsule protected against the photolysis of avermectin B2. Finally, the microcapsules exhibited good soil leaching properties and were able to control the population of root-knot nematodes with an efficacy of 80.80%.

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Section: Resultssupporting

confidence: 87%

Preparation and Characterization of Avermectin B2 Microcapsules and Effective Control of Root-Knot Nematodes

Wang

Yan

et al. 2023

ACS Omega

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“…44,45 The appearance of the characteristic absorption peak at 1748 cm À1 proved that PLA was successfully introduced into the microcapsule wall material. 2 The curve c had the characteristic peaks of chlorfenapyr, which proved that chlorfenapyr was successfully encapsulated in the microcapsules.…”

Section: Ftir Spectral Analysismentioning

confidence: 82%

“… 1 Microencapsulation is a common method used to achieve slow and controlled release performance for many kinds of pesticides, and the slow and controlled release performance is mainly determined by the properties of the active ingredients of the pesticide and the nature of the wall materials of the microcapsules. 2 Microencapsulation of pesticides can reduce the loss of pesticides by volatilization and degradation when exposed to external environments, thereby enhancing the utilization rate and reducing the toxicity of the pesticides. 3 Recently, H. W. An et al fabricated a universal drug delivery platform based on an intracellular self-assembly strategy to achieve effective drug delivery.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of chlorfenapyr microcapsules with a degradable polylactide-based polyurethane wall material

2022

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“…Additionally, the target organisms become resistant to the pesticides as a result of excess use [9]. Malathion has half-lives of 1 to 25 days in soil and 1.5 days to 21 weeks in water [10].…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of Organophosphorus Pesticide (Malathion) by Bacillus sp. FYM31 Isolated from Agriculture Drainage Water

Madbolly¹,

Abdelall

Zaki

et al. 2022

Journal of Scientific Research in Science

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Organophosphorus pesticides (OP) are used extensively in many arenas including agriculture and industry leading to humans and agroecosystems disorders. Malathion is one of the OP that are used in agriculture to control pest and protect crops. Also, they harm non-target organisms and affect cruelly water sources, air, and soil quality. The present study aimed to isolate and identify a potent bacterial isolate capable of degrading malathion. Bacterial strain that isolated from Al Fayoum governorate, Egypt exhibited high efficiency for malathion biodegradation. Biodegradation process using minimal salt medium (MSM) supplemented with different malathion concentrations indicated that the bacterium was able to degrade and use malathion as a sole carbon source up to 700 mg/l at 37°C.The potent strain that exhibited biodegradation potential was identified as Bacillus sp. FYM31 and deposited into GenBank with the accession number OK325597. HPLC proved the effectiveness of malathion removal by Bacillus sp. FYM31 after 12 days of incubation to the level of 70.1% malathion (700 mg/l) degradation. Organophosphorus hydrolase (opd) gene was detected in the potent Bacillus sp. FYM31 strain. Due to the widespread usage of malathion in Egypt's agricultural areas, Bacillus sp. FYM31 can help bio-remediate the polluted areas.

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Preparation and characterisation of polylactic acid modified polyurethane microcapsules for controlled-release of chlorpyrifos

Cited by 18 publications

References 9 publications

Preparation and Characterization of Avermectin B2 Microcapsules and Effective Control of Root-Knot Nematodes

Preparation and Characterization of Avermectin B2 Microcapsules and Effective Control of Root-Knot Nematodes

Preparation and performance of chlorfenapyr microcapsules with a degradable polylactide-based polyurethane wall material

Biodegradation of Organophosphorus Pesticide (Malathion) by Bacillus sp. FYM31 Isolated from Agriculture Drainage Water

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