### Abstract

The viscometric properties of novel magnesium electrolyte-polyacrylamide composite polymers in aqueous solutions were investigated using response surface methodology. Independent factors such as concentration of the magnesium electrolyte (magnesium chloride and magnesium hydroxide), concentration of polyacrylamide, and the solution temperature were taken into account for viscometric modeling. Experiments were carried out according to central composite design, which includes factorial, central and axial points of the factors. Solution viscosity was taken as the response variable. A polynomial model for the viscometric properties was developed using ANOVA and non-linear regression analysis, and the R^{2} values are 0.9995 and 0.9996 for aqueous solutions of magnesium chloride-polyacrylamide (MCPAM) and magnesium hydroxide-polyacrylamide (MHPAM) composite polymers, respectively. Two diagnostic plots have been constructed to validate the developed models for the natural logarithm of viscosity of aqueous solutions of the MCPAM and MHPAM composite polymers. The least-squares values show that the developed models are adequate for predictive purposes. TEM was used to investigate the morphological properties of MCPAM and MHPAM composite polymers. Magnesium chloride was impregnated into the polyacrylamide chain while magnesium hydroxide was just adsorbed on the surface of the polyacrylamide chain.

Original language | English |
---|---|

Pages (from-to) | 27-43 |

Number of pages | 17 |

Journal | Journal of Solution Chemistry |

Volume | 42 |

Issue number | 1 |

DOIs | |

Publication status | Published - Jan 2013 |

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### Keywords

- Composite polymer
- Magnesium chloride
- Magnesium hydroxide
- Morphology
- Polyacrylamide
- Viscosity

### ASJC Scopus subject areas

- Physical and Theoretical Chemistry
- Biochemistry
- Biophysics
- Molecular Biology

### Cite this

*Journal of Solution Chemistry*,

*42*(1), 27-43. https://doi.org/10.1007/s10953-012-9952-y

**Viscometric and morphological properties of novel magnesium electrolyte-polyacrylamide composite polymers in aqueous solution.** / Lee, Khai Ern; Khan, Imran; Morad, Norhashimah; Teng, Tjoon Tow; Poh, Beng Teik.

Research output: Contribution to journal › Article

*Journal of Solution Chemistry*, vol. 42, no. 1, pp. 27-43. https://doi.org/10.1007/s10953-012-9952-y

}

TY - JOUR

T1 - Viscometric and morphological properties of novel magnesium electrolyte-polyacrylamide composite polymers in aqueous solution

AU - Lee, Khai Ern

AU - Khan, Imran

AU - Morad, Norhashimah

AU - Teng, Tjoon Tow

AU - Poh, Beng Teik

PY - 2013/1

Y1 - 2013/1

N2 - The viscometric properties of novel magnesium electrolyte-polyacrylamide composite polymers in aqueous solutions were investigated using response surface methodology. Independent factors such as concentration of the magnesium electrolyte (magnesium chloride and magnesium hydroxide), concentration of polyacrylamide, and the solution temperature were taken into account for viscometric modeling. Experiments were carried out according to central composite design, which includes factorial, central and axial points of the factors. Solution viscosity was taken as the response variable. A polynomial model for the viscometric properties was developed using ANOVA and non-linear regression analysis, and the R2 values are 0.9995 and 0.9996 for aqueous solutions of magnesium chloride-polyacrylamide (MCPAM) and magnesium hydroxide-polyacrylamide (MHPAM) composite polymers, respectively. Two diagnostic plots have been constructed to validate the developed models for the natural logarithm of viscosity of aqueous solutions of the MCPAM and MHPAM composite polymers. The least-squares values show that the developed models are adequate for predictive purposes. TEM was used to investigate the morphological properties of MCPAM and MHPAM composite polymers. Magnesium chloride was impregnated into the polyacrylamide chain while magnesium hydroxide was just adsorbed on the surface of the polyacrylamide chain.

AB - The viscometric properties of novel magnesium electrolyte-polyacrylamide composite polymers in aqueous solutions were investigated using response surface methodology. Independent factors such as concentration of the magnesium electrolyte (magnesium chloride and magnesium hydroxide), concentration of polyacrylamide, and the solution temperature were taken into account for viscometric modeling. Experiments were carried out according to central composite design, which includes factorial, central and axial points of the factors. Solution viscosity was taken as the response variable. A polynomial model for the viscometric properties was developed using ANOVA and non-linear regression analysis, and the R2 values are 0.9995 and 0.9996 for aqueous solutions of magnesium chloride-polyacrylamide (MCPAM) and magnesium hydroxide-polyacrylamide (MHPAM) composite polymers, respectively. Two diagnostic plots have been constructed to validate the developed models for the natural logarithm of viscosity of aqueous solutions of the MCPAM and MHPAM composite polymers. The least-squares values show that the developed models are adequate for predictive purposes. TEM was used to investigate the morphological properties of MCPAM and MHPAM composite polymers. Magnesium chloride was impregnated into the polyacrylamide chain while magnesium hydroxide was just adsorbed on the surface of the polyacrylamide chain.

KW - Composite polymer

KW - Magnesium chloride

KW - Magnesium hydroxide

KW - Morphology

KW - Polyacrylamide

KW - Viscosity

UR - http://www.scopus.com/inward/record.url?scp=84873410840&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873410840&partnerID=8YFLogxK

U2 - 10.1007/s10953-012-9952-y

DO - 10.1007/s10953-012-9952-y

M3 - Article

AN - SCOPUS:84873410840

VL - 42

SP - 27

EP - 43

JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

SN - 0095-9782

IS - 1

ER -