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Optimization strategies for radiation induced grafting of 4-vinylpyridine onto poly(ethylene-co-tetraflouroethene) film using box-behnken design

Nasef, Mohamed Mahmoud and Shamsaei, Ezzatollah and Ghassemi, Payman and Aly, Amgad Ahmed and Yahaya, Abdul Hamid (2012) Optimization strategies for radiation induced grafting of 4-vinylpyridine onto poly(ethylene-co-tetraflouroethene) film using box-behnken design. Radiation Physics And Chemistry, 81 (4). pp. 437-444. ISSN 0969-806X

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Official URL: http://dx.doi.org/10.1016/j.radphyschem.2011.12.01...

Abstract

The radiation induced grafting of 4-vinylpyridine (4-VP) onto poly(ethylene-co-tetrafluoroethene) (ETFE) was optimized using the Box–Behnken factorial design available in the response surface method (RSM). The optimized grafting parameters; absorbed dose, monomer concentration, grafting time and reaction temperature were varied in four levels to quantify their effect on the grafting yield (GY). The validity of the statistical model was supported by the small deviation between the predicted (GY=61%) and experimental (GY=57%) values. The optimum conditions for enhancing GY were determined at the following values: monomer concentration of 48 vol%, absorbed dose of 64 kGy, reaction time of 4 h and temperature of 68 °C. A comparison was made between the optimization model developed for the present grafting system and that for grafting of 1-vinylimidazole (1-VIm) onto ETFE to confirm the validly and reliability of the Box–Behnken for the optimization of various radiation induced grafting reactions. Fourier transform infrared (FTIR), thermogravimetric analysis (TGA) and X-ray diffraction (XRD) were used to investigate the properties of the obtained films and provide evidence for grafting.

Item Type:Article
Uncontrolled Keywords:radiation induced grafting, proton exchange membranes, thermogravimetric analysis
Subjects:Q Science > QC Physics
Divisions:Chemical Engineering
ID Code:47328
Deposited By: Narimah Nawil
Deposited On:22 Jun 2015 13:56
Last Modified:31 Mar 2019 16:38

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