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Physical Chemistry Research، جلد ۱۱، شماره ۴، صفحات ۹۴۳-۹۵۱
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عنوان انگلیسی Methods of Recycling Expanded Polystyrene Waste: Synthesis and Characterization
چکیده انگلیسی مقاله This work reports the recycling of waste polystyrene that was expanded by homgeneous sulfonation reactions using different methods. The obtained sulfonates polystyrenes (PSS) were identified using various techniques such as FTIR spectrometry, Thermogravimetric Analysis (TGA), and X-ray diffraction (XRD). The FTIR spectrometry showed the appearance of the S-O band at 1050 cm-1 and S=O at 1180 cm-1 of the sulfur trioxide, which confirmed the polystyrene’s modification. It is important to note that great thermal stability happened for the material which was modified at T=445°C, compared with the starting one T=400°C. In addition, the average macromolecular masses (Mv) were obtained by viscosity. The polymer exhibited polyelectrolyte behavior. The results showed an increase up to 69% in the degree of sulfonation due to the essentially higher time, beside a positive correlation between the degree and the color during synthesis. This outcome ultimately indicated a high percentage of changing benzene rings and the results were confirmed by the potentiometric dosage method.
کلیدواژه‌های انگلیسی مقاله Recycling,Sulfonation,FTIR spectroscopy,Thermal stability,Degree of sulfonation
نویسندگان مقاله Zennaki Mohammed El Amine |
Laboratory of Organic Electrolytes and Polyelectrolytes’ Application (LAEPO), Department of Chemistry, Faculty of Science, Tlemcen University, algeria

Tennouga Lahcene |
Laboratory of Organic Electrolytes and Polyelectrolytes’ Application (LAEPO). Department of Chemistry, Faculty of Science, Tlemcen University, B. P. 119 13000 Tlemcen, Algeria

BOURAS Brahim |
Department of Chemistry, Faculty of Sciences, Tlemcen University, B. P. 119 13000 Tlemcen, Algeria.

Medjahed Kouider |
Department of Chemistry, Faculty of Sciences, Tlemcen University, B. P. 119 13000 Tlemcen, Algeria.

نشانی اینترنتی https://www.physchemres.org/article_165729_dc31ca331f9fd0382ed55d9e6df5b9ad.pdf
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