Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy

This present work aims to synthesise N-isopropyl acrylamide (NIPAM) polymer gel and study the effect of NIPAM monomer and N, N’-methylene-bisacrylamide (BIS) crosslinker concentrations on polymerization of NIPAM polymer and NIPAM and BIS consumptions in gelatin matrix induced by gamma rays at dose b...

Full description

Saved in:

Bibliographic Details
Main Author:	Adenan, Mohd Zulfadli
Format:	Thesis
Language:	English
Published:	2014
Subjects:	Raman effect Biotechnology
Online Access:	http://psasir.upm.edu.my/id/eprint/70511/1/FS%202014%2066%20-%20IR.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.70511
record_format	uketd_dc
spelling	my-upm-ir.705112019-10-30T01:23:31Z Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy 2014-11 Adenan, Mohd Zulfadli This present work aims to synthesise N-isopropyl acrylamide (NIPAM) polymer gel and study the effect of NIPAM monomer and N, N’-methylene-bisacrylamide (BIS) crosslinker concentrations on polymerization of NIPAM polymer and NIPAM and BIS consumptions in gelatin matrix induced by gamma rays at dose between 0 and 21 Gy. The NIPAM polymer gels were synthesized from NIPAM (2 to 4% w/w) and BIS (2 to 4% w/w), gelatin (6% w/w), anti-oxidant tetrakis hydroxymethyl phosphonium chloride (THPC) (5 mM), and de-ionized water. The samples were irradiated with 60Co Gamma cell instrument at a constant dose rate, receiving doses from 3 Gy up to 21 Gy. The dose response of irradiated NIPAM polymer gel was determined using Raman spectroscopy. Raman peak intensities were identified in the samples at 815 cm-1 assigned bonding for C-C of NIPAM polymer gel, 1025 cm-1 assigned bonding for C=C of NIPAM and 2353 cm-1 bonding for C=C of BIS. The Raman intensity y that corresponds to the rate of polymer formation in NIPAM polymer gel increases with increasing dose D and fitted with the monoexponential equation y = y0 + A(1 – e –D/D0 ). The dose sensitivity D0 derived from the equation that was also found increasing with the increase of initial concentrations of NIPAM monomer and BIS crosslinker. The rate of co-monomer consumption decreases with increasing dose and was fitted with the monoexponential equation y = y0 – A(1 – e -D/ D0). The dose sensitivity D0 were also found to increase with the increase of initial concentrations of NIPAM monomer and BIS crosslinker. Raman effect Biotechnology 2014-11 Thesis http://psasir.upm.edu.my/id/eprint/70511/ http://psasir.upm.edu.my/id/eprint/70511/1/FS%202014%2066%20-%20IR.pdf text en public masters Universiti Putra Malaysia Raman effect Biotechnology
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Raman effect Biotechnology
spellingShingle	Raman effect Biotechnology Adenan, Mohd Zulfadli Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
description	This present work aims to synthesise N-isopropyl acrylamide (NIPAM) polymer gel and study the effect of NIPAM monomer and N, N’-methylene-bisacrylamide (BIS) crosslinker concentrations on polymerization of NIPAM polymer and NIPAM and BIS consumptions in gelatin matrix induced by gamma rays at dose between 0 and 21 Gy. The NIPAM polymer gels were synthesized from NIPAM (2 to 4% w/w) and BIS (2 to 4% w/w), gelatin (6% w/w), anti-oxidant tetrakis hydroxymethyl phosphonium chloride (THPC) (5 mM), and de-ionized water. The samples were irradiated with 60Co Gamma cell instrument at a constant dose rate, receiving doses from 3 Gy up to 21 Gy. The dose response of irradiated NIPAM polymer gel was determined using Raman spectroscopy. Raman peak intensities were identified in the samples at 815 cm-1 assigned bonding for C-C of NIPAM polymer gel, 1025 cm-1 assigned bonding for C=C of NIPAM and 2353 cm-1 bonding for C=C of BIS. The Raman intensity y that corresponds to the rate of polymer formation in NIPAM polymer gel increases with increasing dose D and fitted with the monoexponential equation y = y0 + A(1 – e –D/D0 ). The dose sensitivity D0 derived from the equation that was also found increasing with the increase of initial concentrations of NIPAM monomer and BIS crosslinker. The rate of co-monomer consumption decreases with increasing dose and was fitted with the monoexponential equation y = y0 – A(1 – e -D/ D0). The dose sensitivity D0 were also found to increase with the increase of initial concentrations of NIPAM monomer and BIS crosslinker.
format	Thesis
qualification_level	Master's degree
author	Adenan, Mohd Zulfadli
author_facet	Adenan, Mohd Zulfadli
author_sort	Adenan, Mohd Zulfadli
title	Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
title_short	Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
title_full	Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
title_fullStr	Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
title_full_unstemmed	Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy
title_sort	preparation of n-isopropyl acrylamide polymer gel dosimeters and their characterization by raman spectroscopy
granting_institution	Universiti Putra Malaysia
publishDate	2014
url	http://psasir.upm.edu.my/id/eprint/70511/1/FS%202014%2066%20-%20IR.pdf
_version_	1747812855538778112

Preparation of N-isopropyl acrylamide polymer gel dosimeters and their characterization by Raman spectroscopy

Similar Items