Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber

Sifat biodegradasi kitosan (CTS) adalah secara relatifnya amat lebih tinggi berbanding dengan sifat biodegradasi getah asli terepoksida (ENR). Biokomposit yang mengandungi CTS dan ENR berkemungkinan mempunyai sifat biodegradasi yang diingini dan sesuai untuk pelepasan sebatian-sebatian tertentu seca...

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Main Author:	Idrees Mahmood, Luqman
Format:	Thesis
Language:	English
Published:	2016
Subjects:	QD1-999 Chemistry
Online Access:	http://eprints.usm.my/31355/1/LUQMAN_IDREES_MAHMOOD_24.pdf
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spelling	my-usm-ep.313552019-04-12T05:25:21Z Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber 2016-04 Idrees Mahmood, Luqman QD1-999 Chemistry Sifat biodegradasi kitosan (CTS) adalah secara relatifnya amat lebih tinggi berbanding dengan sifat biodegradasi getah asli terepoksida (ENR). Biokomposit yang mengandungi CTS dan ENR berkemungkinan mempunyai sifat biodegradasi yang diingini dan sesuai untuk pelepasan sebatian-sebatian tertentu secara terkawal. Memandangkan ini, kitosan berasid (CTSAc) disediakan dengan menggunakan larutan 2% asid asetik dan seterusnya muatan CTSAc yang berbeza disebar dalam matrik ENR50 dan ENR25 bagi menghasilkan biokomposit zphrCTSAc-d-ENR50 dan zCTSAc-d-ENR25, di mana z adalah muatan CTSAc seperti 1.5, 2.5, 3.5, 5, 10, 15, 20 dan 40 phr. Bahan polimer permulaan dan biokomposit dicirikan dengan beberapa teknik analitikal seperti spektroskopi FT-NMR, spektroskopi FT-IR, TGA, DSC, SEM dan BET. Keputusan analisis data FT-IR, TGA dan DSC menunjukkan CTSAc tidak bercantum pada tetapi tersebar luas dalam matrik ENR50 dan ENR25 yang tersambungsilang separa. Biodegradability of chitosan (CTS) is relatively very high as compared to that of epoxidized natural rubber (ENR). Biocomposites containing CTS and ENR would likely to biodegrade desirably and are suitable for controlled release of compounds of interest. In view of this, acidified chitosan (CTSAc) was prepared using 2% acetic acid solution and then different loadings of CTSAc were dispersed in matrices of ENR50 and ENR25 to produce biocomposites designated as zphrCTSAc-d-ENR50 and zCTSAc-d-ENR25, respectively, wherein z refers to CTSAc loadings of 1.5, 2.5, 3.5, 5, 10, 15, 20 and 40 phr. The starting polymeric materials and resulting biocomposites were characterized using several analytical techniques such as FT-NMR spectroscopy, FT-IR spectroscopy, TGA, DSC, SEM and BET. Results of the analysis of FT-IR, TGA and DSC data reveal that CTSAc was not grafted to but dispersed widely in partially crosslinked matrices of ENR50 and ENR25. 2016-04 Thesis http://eprints.usm.my/31355/ http://eprints.usm.my/31355/1/LUQMAN_IDREES_MAHMOOD_24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Kimia (School of Chemical Sciences)
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QD1-999 Chemistry
spellingShingle	QD1-999 Chemistry Idrees Mahmood, Luqman Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
description	Sifat biodegradasi kitosan (CTS) adalah secara relatifnya amat lebih tinggi berbanding dengan sifat biodegradasi getah asli terepoksida (ENR). Biokomposit yang mengandungi CTS dan ENR berkemungkinan mempunyai sifat biodegradasi yang diingini dan sesuai untuk pelepasan sebatian-sebatian tertentu secara terkawal. Memandangkan ini, kitosan berasid (CTSAc) disediakan dengan menggunakan larutan 2% asid asetik dan seterusnya muatan CTSAc yang berbeza disebar dalam matrik ENR50 dan ENR25 bagi menghasilkan biokomposit zphrCTSAc-d-ENR50 dan zCTSAc-d-ENR25, di mana z adalah muatan CTSAc seperti 1.5, 2.5, 3.5, 5, 10, 15, 20 dan 40 phr. Bahan polimer permulaan dan biokomposit dicirikan dengan beberapa teknik analitikal seperti spektroskopi FT-NMR, spektroskopi FT-IR, TGA, DSC, SEM dan BET. Keputusan analisis data FT-IR, TGA dan DSC menunjukkan CTSAc tidak bercantum pada tetapi tersebar luas dalam matrik ENR50 dan ENR25 yang tersambungsilang separa. Biodegradability of chitosan (CTS) is relatively very high as compared to that of epoxidized natural rubber (ENR). Biocomposites containing CTS and ENR would likely to biodegrade desirably and are suitable for controlled release of compounds of interest. In view of this, acidified chitosan (CTSAc) was prepared using 2% acetic acid solution and then different loadings of CTSAc were dispersed in matrices of ENR50 and ENR25 to produce biocomposites designated as zphrCTSAc-d-ENR50 and zCTSAc-d-ENR25, respectively, wherein z refers to CTSAc loadings of 1.5, 2.5, 3.5, 5, 10, 15, 20 and 40 phr. The starting polymeric materials and resulting biocomposites were characterized using several analytical techniques such as FT-NMR spectroscopy, FT-IR spectroscopy, TGA, DSC, SEM and BET. Results of the analysis of FT-IR, TGA and DSC data reveal that CTSAc was not grafted to but dispersed widely in partially crosslinked matrices of ENR50 and ENR25.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Idrees Mahmood, Luqman
author_facet	Idrees Mahmood, Luqman
author_sort	Idrees Mahmood, Luqman
title	Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
title_short	Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
title_full	Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
title_fullStr	Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
title_full_unstemmed	Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber
title_sort	preparation, characterization and applications of biocomposites consist of chitosan dispersed in epoxidized natural rubber
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kimia (School of Chemical Sciences)
publishDate	2016
url	http://eprints.usm.my/31355/1/LUQMAN_IDREES_MAHMOOD_24.pdf
_version_	1747820407307632640

Preparation, Characterization And Applications Of Biocomposites Consist Of Chitosan Dispersed In Epoxidized Natural Rubber

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