Modification of chitosan for preparation of poly(N-isopropylacrylamide/O-nitrochitosan) Interpenetrating polymer network

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Abstract

An interpenetrating polymer network (IPN), N-isopropylacrylamide/O-nitrochitosan (NONK) was developed in the presence of ammonium persulfate using solution polymerization technique. O-nitrochitosan (ONK) was synthesized from chitosan, before it was further reacted with N-isopropylacrylamide. A new vibration of the C-N bond formed between the NH from ONK and the CH2 from NIPAAm was detected at the peak 1154 and 1171 cm-1 using attenuated total reflection Fouriertransform infrared (ATR-FTIR) spectroscopy. In the polymerization, the primary amine became a secondary amine and the peaks of the amide I (C=O peak) and amide II (N-H) were broadened. The structure of ONK was confirmed using nuclear magnetic resonance (NMR). At 10°C, the result from swelling test was found that IPN poly(NONK82) had the highest swelling percentage, 1171%, compared to poly (NIPAAm) at 467%. Micrograph from scanning electron microscopy (SEM) indicated the pore size of IPN NONK increased with an increasing ratio of ONK.

Original languageEnglish
Pages (from-to)995-1001
Number of pages7
JournalSains Malaysiana
Volume44
Issue number7
Publication statusPublished - 1 Jul 2015

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Interpenetrating polymer networks
Chitosan
Amides
Amines
Swelling
Polymerization
Pore size
Infrared spectroscopy
Nuclear magnetic resonance
Scanning electron microscopy
poly-N-isopropylacrylamide
N-isopropylacrylamide

Keywords

  • N-isopropylacrylamide(NIPAAm)
  • Nuclear magnetic resonance(NMR)
  • O-nitrochitosan (ONK)

ASJC Scopus subject areas

  • General

Cite this

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title = "Modification of chitosan for preparation of poly(N-isopropylacrylamide/O-nitrochitosan) Interpenetrating polymer network",
abstract = "An interpenetrating polymer network (IPN), N-isopropylacrylamide/O-nitrochitosan (NONK) was developed in the presence of ammonium persulfate using solution polymerization technique. O-nitrochitosan (ONK) was synthesized from chitosan, before it was further reacted with N-isopropylacrylamide. A new vibration of the C-N bond formed between the NH from ONK and the CH2 from NIPAAm was detected at the peak 1154 and 1171 cm-1 using attenuated total reflection Fouriertransform infrared (ATR-FTIR) spectroscopy. In the polymerization, the primary amine became a secondary amine and the peaks of the amide I (C=O peak) and amide II (N-H) were broadened. The structure of ONK was confirmed using nuclear magnetic resonance (NMR). At 10°C, the result from swelling test was found that IPN poly(NONK82) had the highest swelling percentage, 1171{\%}, compared to poly (NIPAAm) at 467{\%}. Micrograph from scanning electron microscopy (SEM) indicated the pore size of IPN NONK increased with an increasing ratio of ONK.",
keywords = "N-isopropylacrylamide(NIPAAm), Nuclear magnetic resonance(NMR), O-nitrochitosan (ONK)",
author = "{Abd Rahman}, Norliza and {Abu Hanifah}, Sharina and Zani, {A. M N} and Azizan Ahmad",
year = "2015",
month = "7",
day = "1",
language = "English",
volume = "44",
pages = "995--1001",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
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TY - JOUR

T1 - Modification of chitosan for preparation of poly(N-isopropylacrylamide/O-nitrochitosan) Interpenetrating polymer network

AU - Abd Rahman, Norliza

AU - Abu Hanifah, Sharina

AU - Zani, A. M N

AU - Ahmad, Azizan

PY - 2015/7/1

Y1 - 2015/7/1

N2 - An interpenetrating polymer network (IPN), N-isopropylacrylamide/O-nitrochitosan (NONK) was developed in the presence of ammonium persulfate using solution polymerization technique. O-nitrochitosan (ONK) was synthesized from chitosan, before it was further reacted with N-isopropylacrylamide. A new vibration of the C-N bond formed between the NH from ONK and the CH2 from NIPAAm was detected at the peak 1154 and 1171 cm-1 using attenuated total reflection Fouriertransform infrared (ATR-FTIR) spectroscopy. In the polymerization, the primary amine became a secondary amine and the peaks of the amide I (C=O peak) and amide II (N-H) were broadened. The structure of ONK was confirmed using nuclear magnetic resonance (NMR). At 10°C, the result from swelling test was found that IPN poly(NONK82) had the highest swelling percentage, 1171%, compared to poly (NIPAAm) at 467%. Micrograph from scanning electron microscopy (SEM) indicated the pore size of IPN NONK increased with an increasing ratio of ONK.

AB - An interpenetrating polymer network (IPN), N-isopropylacrylamide/O-nitrochitosan (NONK) was developed in the presence of ammonium persulfate using solution polymerization technique. O-nitrochitosan (ONK) was synthesized from chitosan, before it was further reacted with N-isopropylacrylamide. A new vibration of the C-N bond formed between the NH from ONK and the CH2 from NIPAAm was detected at the peak 1154 and 1171 cm-1 using attenuated total reflection Fouriertransform infrared (ATR-FTIR) spectroscopy. In the polymerization, the primary amine became a secondary amine and the peaks of the amide I (C=O peak) and amide II (N-H) were broadened. The structure of ONK was confirmed using nuclear magnetic resonance (NMR). At 10°C, the result from swelling test was found that IPN poly(NONK82) had the highest swelling percentage, 1171%, compared to poly (NIPAAm) at 467%. Micrograph from scanning electron microscopy (SEM) indicated the pore size of IPN NONK increased with an increasing ratio of ONK.

KW - N-isopropylacrylamide(NIPAAm)

KW - Nuclear magnetic resonance(NMR)

KW - O-nitrochitosan (ONK)

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