Analysis of Poly(2-Hydroxyethyl~Methacrylate)-co- Poly(4-Vinyl Pyridine) Copolymers [COP2,4] Irradiated: an EPR study

• Authors: Y. Ceylan , H. Yumurtaci Aydogmus , K. Usta , A. Usta , N. Ceylan , H. Yilmaz
• Languages of publication: EN

Abstracts

EN

Poly(2-hydroxyethyl methacrylate)-co-poly(4-vinyl pyridine) and poly(HEMA)-co-poly-(4-VP) copolymers were synthesized by free radical polymerization. K₂S₂O₈ was used as an initiator. Chain lengths of the copolymer was changed by varying the monomer/initiator ratio. These polymers have molarites of 2.6 and 2.1 respectively and are called COP2 and COP4. The samples were exposed to gamma rays at room temperature. After irradiation, the EPR spectra of COP2 and COP4 were recorded between 120 K and 450 K. From the temperature dependence of the line intensity, it was concluded that unpaired spin concentration in the irradiated samples has been changing with temperature. A theoretical study, presented in this report, was aimed to test success of the machine learning methods and to select the best learning method.

Keywords

EN

87.66.Uv; 36.20.Kd; 39.30.+w; 33.35.+r

Discipline

• 36.20.Kd: Electronic structure and spectra
• 33.35.+r: Electron resonance and relaxation(see also 76.30.-v Electron paramagnetic resonance and relaxation in condensed matter)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 1
• Pages: 167-171

Dates

published

2016-07

Contributors

author

Y. Ceylan

• Selcuk University, Department of Physics, Konya, Turkey

author

H. Yumurtaci Aydogmus

• Alanya Alaaddin Keykubat University, Department of Industrial Engineering, Antalya, Turkey

author

K. Usta

• Alanya Alaaddin Keykubat University, Department of Metallurgical and Materials Engineering, Antalya, Turkey

author

A. Usta

• Alanya Alaaddin Keykubat University, Department of Mechanical Engineering, Antalya, Turkey

author

N. Ceylan

• Giresun University, Department of Chemistry, Giresun, Turkey

author

H. Yilmaz

• Gazi University, Department of Chemistry, Polatli-Ankara, Turkey

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Identifiers

DOI

10.12693/APhysPolA.130.167