Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control

This research aimed to synthesis active agent-zinc layered hydroxide intercalatedagrochemical nanocomposites namely zinc layered hydroxide-sodium dodecylsulphate-isoprocarb (ZLH-SDS-ISO), zinc layered hydroxide-sodium dodecylsulphate-propoxur (ZLH-SDS-PRO) and zinc layered hydroxide-sodium dode...

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Main Author:	Zuhailimuna Muda
Format:	thesis
Language:	eng
Published:	2019
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Online Access:	https://ir.upsi.edu.my/detailsg.php?det=6754
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spellingShingle	Zuhailimuna Muda Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
description	This research aimed to synthesis active agent-zinc layered hydroxide intercalatedagrochemical nanocomposites namely zinc layered hydroxide-sodium dodecylsulphate-isoprocarb (ZLH-SDS-ISO), zinc layered hydroxide-sodium dodecylsulphate-propoxur (ZLH-SDS-PRO) and zinc layered hydroxide-sodium dodecylsulphate-thiacloprid (ZLH-SDS-THI) using ion exchange method for pest control. Surfacemodification of nanocomposites was performed using chitosan and cellulose acetate. Thenanocomposites were characterized using powder x-ray diffraction (PXRD), Fourier transforminfrared (FTIR), elemental analysis, thermogravimetric and differential thermogravimetricanalysis (TGA/DTG), field emission scanning electron microscope (FESEM), and surface areaanalysis. The results of PXRD patterns showed the basal spacing in the range of 30.1 to 33.1 support the successful intercalation process. FTIR spectra for allnanocomposites showed the presence of anion in the interlayer of the nanocomposite. Release studyshowed that phosphate solution yielded highest percentage release of anion in the range of 90.0 %-97.5 % compared to chitosan and cellulose acetate coated nanocomposite with the rangeof 77.6 %-87.9 % and 49.1 %-90.0 %, respectively. The results for kinetics study showedthat ZLH-SDS-ISO and ZLH-SDS-THI were governed by first order in phosphate solution, meanwhile therelease in sulphate and chloride solutions followed the pseudo second order. Whereby,ZLH-SDS-PRO best fitted with pseudo second order in all solutions. All cellulose acetatecoated nanocomposites were governed by pseudo second order in all solutions. Chitosan coatedZLH-SDS-ISO (sulphate and chloride) and ZLH-SDS-THI (all solutions) nanocomposites showed bestfitted with parabolic, whereas for ZLH-SDS-PRO nanocomposite was best fitted with pseudosecond order in all solutions. In conclusion, the nanocomposites were successfullysynthesized and the release time for coated nanocomposite was prolonged compared to uncoatednanocomposite. The implication of this research is to improve the cultivation activity bylowering the contamination risk of pesticides in environment.
format	thesis
qualification_name
qualification_level	Doctorate
author	Zuhailimuna Muda
author_facet	Zuhailimuna Muda
author_sort	Zuhailimuna Muda
title	Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
title_short	Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
title_full	Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
title_fullStr	Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
title_full_unstemmed	Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
title_sort	controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control
granting_institution	Universiti Pendidikan Sultan Idris
granting_department	Fakulti Sains dan Matematik
publishDate	2019
url	https://ir.upsi.edu.my/detailsg.php?det=6754
_version_	1747833305952157696
spelling	oai:ir.upsi.edu.my:67542022-02-16 Controlled release formulation of active agent-zinc layered hydroxide intercalated nanocomposite for pest control 2019 Zuhailimuna Muda This research aimed to synthesis active agent-zinc layered hydroxide intercalatedagrochemical nanocomposites namely zinc layered hydroxide-sodium dodecylsulphate-isoprocarb (ZLH-SDS-ISO), zinc layered hydroxide-sodium dodecylsulphate-propoxur (ZLH-SDS-PRO) and zinc layered hydroxide-sodium dodecylsulphate-thiacloprid (ZLH-SDS-THI) using ion exchange method for pest control. Surfacemodification of nanocomposites was performed using chitosan and cellulose acetate. Thenanocomposites were characterized using powder x-ray diffraction (PXRD), Fourier transforminfrared (FTIR), elemental analysis, thermogravimetric and differential thermogravimetricanalysis (TGA/DTG), field emission scanning electron microscope (FESEM), and surface areaanalysis. The results of PXRD patterns showed the basal spacing in the range of 30.1 to 33.1 support the successful intercalation process. FTIR spectra for allnanocomposites showed the presence of anion in the interlayer of the nanocomposite. Release studyshowed that phosphate solution yielded highest percentage release of anion in the range of 90.0 %-97.5 % compared to chitosan and cellulose acetate coated nanocomposite with the rangeof 77.6 %-87.9 % and 49.1 %-90.0 %, respectively. The results for kinetics study showedthat ZLH-SDS-ISO and ZLH-SDS-THI were governed by first order in phosphate solution, meanwhile therelease in sulphate and chloride solutions followed the pseudo second order. Whereby,ZLH-SDS-PRO best fitted with pseudo second order in all solutions. All cellulose acetatecoated nanocomposites were governed by pseudo second order in all solutions. Chitosan coatedZLH-SDS-ISO (sulphate and chloride) and ZLH-SDS-THI (all solutions) nanocomposites showed bestfitted with parabolic, whereas for ZLH-SDS-PRO nanocomposite was best fitted with pseudosecond order in all solutions. In conclusion, the nanocomposites were successfullysynthesized and the release time for coated nanocomposite was prolonged compared to uncoatednanocomposite. The implication of this research is to improve the cultivation activity bylowering the contamination risk of pesticides in environment. 2019 thesis https://ir.upsi.edu.my/detailsg.php?det=6754 https://ir.upsi.edu.my/detailsg.php?det=6754 text eng closedAccess Doctoral Universiti Pendidikan Sultan Idris Fakulti Sains dan Matematik Abramovi?, B. F., Bani?, N. D., & oji?, D. V. (2010). Degradation of thiacloprid inaqueous solution by UV and UV/H?O? treatments. Chemosphere, 81(1), 114119.Ahmad, R., Hussein, M. Z., Sarijo, S. H., Rasidah, W., Abdul, W., & Hin, T. Y.(2016). 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