Amine functionalization of microcrystalline cellulose assisted by (3-chloropropyl)triethoxysilane

Fatemeh Rafieian Koupaei (Corresponding author), Mohamad Mousavi, Qingliang Yu, Mehdi Jonoobi

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

To improve the heavy metal adsorption of microcrystalline cellulose (MCC), two successive grafting reactions of silylation by (3-chloropropyl)triethoxysilane (CPTES) and amine-functionalization with metformin HCl were performed and the modified MCC from the first and second steps were denoted as MMCC-1 and MMCC-2, respectively. MMCCs were characterized by fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) and compared to MCC. The presence of the amine group on the MMCC-2 surface was confirmed by FT-IR analysis. According to the XRD results, the crystallinity index (CI) of MMCC-1 increased very slightly compared to that of MCC that can be attributed to the partial hydrolysis of amorphous parts because of acidic conditions used for MCC silylation but CI of MMCC-2 decreased due to the high temperature and long time in the 2 nd step of modification. TGA revealed the lower thermal stability of MMCC-2 than the corresponding MCC.

LanguageEnglish
Pages280-287
Number of pages8
JournalInternational Journal of Biological Macromolecules
Volume130
DOIs
StatePublished - 1 Jun 2019

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Amines
Fourier Transform Infrared Spectroscopy
X-Ray Diffraction
Thermogravimetric analysis
Metformin
Heavy Metals
X ray diffraction analysis
Adsorption
microcrystalline cellulose
triethoxysilane
Hydrolysis
Thermodynamic stability
Hot Temperature
X ray diffraction
Temperature

Keywords

  • (3-chloropropyl)triethoxysilane
  • Metformin HCl
  • Microcrsytalline cellulose
  • Modification

Cite this

@article{b015a381f3ed4eb8b8370f64ddc12ac1,
title = "Amine functionalization of microcrystalline cellulose assisted by (3-chloropropyl)triethoxysilane",
abstract = "To improve the heavy metal adsorption of microcrystalline cellulose (MCC), two successive grafting reactions of silylation by (3-chloropropyl)triethoxysilane (CPTES) and amine-functionalization with metformin HCl were performed and the modified MCC from the first and second steps were denoted as MMCC-1 and MMCC-2, respectively. MMCCs were characterized by fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) and compared to MCC. The presence of the amine group on the MMCC-2 surface was confirmed by FT-IR analysis. According to the XRD results, the crystallinity index (CI) of MMCC-1 increased very slightly compared to that of MCC that can be attributed to the partial hydrolysis of amorphous parts because of acidic conditions used for MCC silylation but CI of MMCC-2 decreased due to the high temperature and long time in the 2 nd step of modification. TGA revealed the lower thermal stability of MMCC-2 than the corresponding MCC.",
keywords = "(3-chloropropyl)triethoxysilane, Metformin HCl, Microcrsytalline cellulose, Modification",
author = "{Rafieian Koupaei}, Fatemeh and Mohamad Mousavi and Qingliang Yu and Mehdi Jonoobi",
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Amine functionalization of microcrystalline cellulose assisted by (3-chloropropyl)triethoxysilane. / Rafieian Koupaei, Fatemeh (Corresponding author); Mousavi, Mohamad; Yu, Qingliang; Jonoobi, Mehdi.

In: International Journal of Biological Macromolecules, Vol. 130, 01.06.2019, p. 280-287.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Amine functionalization of microcrystalline cellulose assisted by (3-chloropropyl)triethoxysilane

AU - Rafieian Koupaei,Fatemeh

AU - Mousavi,Mohamad

AU - Yu,Qingliang

AU - Jonoobi,Mehdi

PY - 2019/6/1

Y1 - 2019/6/1

N2 - To improve the heavy metal adsorption of microcrystalline cellulose (MCC), two successive grafting reactions of silylation by (3-chloropropyl)triethoxysilane (CPTES) and amine-functionalization with metformin HCl were performed and the modified MCC from the first and second steps were denoted as MMCC-1 and MMCC-2, respectively. MMCCs were characterized by fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) and compared to MCC. The presence of the amine group on the MMCC-2 surface was confirmed by FT-IR analysis. According to the XRD results, the crystallinity index (CI) of MMCC-1 increased very slightly compared to that of MCC that can be attributed to the partial hydrolysis of amorphous parts because of acidic conditions used for MCC silylation but CI of MMCC-2 decreased due to the high temperature and long time in the 2 nd step of modification. TGA revealed the lower thermal stability of MMCC-2 than the corresponding MCC.

AB - To improve the heavy metal adsorption of microcrystalline cellulose (MCC), two successive grafting reactions of silylation by (3-chloropropyl)triethoxysilane (CPTES) and amine-functionalization with metformin HCl were performed and the modified MCC from the first and second steps were denoted as MMCC-1 and MMCC-2, respectively. MMCCs were characterized by fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) and compared to MCC. The presence of the amine group on the MMCC-2 surface was confirmed by FT-IR analysis. According to the XRD results, the crystallinity index (CI) of MMCC-1 increased very slightly compared to that of MCC that can be attributed to the partial hydrolysis of amorphous parts because of acidic conditions used for MCC silylation but CI of MMCC-2 decreased due to the high temperature and long time in the 2 nd step of modification. TGA revealed the lower thermal stability of MMCC-2 than the corresponding MCC.

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