Bu çalışmada, ilk olarak 350.000 molekül kütleli blok polistiren (PS) çözünme-çöktürme metodu kullanılarak fraksiyonlarına ayrılmıştır. Daha sonra 70.000, 80.000 ve 90.000 molekül kütleli PS fraksiyonlarının BF3.O(C2H5)2 katalizörlüğünde asetik anhidritle (AA) kimyasal modifikasyon reaksiyonları incelenmiştir. Ayrıca PS yapısına bağlanan fonksiyonel grup miktarının kıyaslanması için elde edilen yüksek molekül kütleli (Mn *= 290.000 ve 500.000) PS fraksiyonları da optimum şartta modifiye edilmiştir. PS yapısına bağlanmış fonksiyonel grup sayısı PS’nin molekül kütlesine bağlı olarak değişiklik göstermiştir ve daha düşük molekül kütleli PS’ye daha fazla fonksiyonel grup bağlanmıştır. PS yapısına bağlanan fonksiyonel gruplar ve miktarları spektral ve kimyasal metotlarla değerlendirilmiştir.
In this study, the first the block of polystyrene (PS) that have molecular weight of 350.000 was fractionized by using of solvent-precipitation methods, than chemical modification reactions of PS fractions, with molecular weights of 70.000, 80.000 and 90.000, with acetic anhydrides (AA) in the presence of a catalyst BF3.O(C2H5)2 were examined. Also, PS fractions, with high molecular weight (Mn * = 290.000 and 500.000), were modified under the optimum conditions to compare of functional groups to bound PS structure. The number of polyfunctional groups bound to the PS structure changed according to the molecular weight of the PS, and more functional groups were bound to lower molecular weight PSs. The bound functional groups and their amounts were determined with spectral and chemical analysis methods.
Other ID | JA58BY72ZV |
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Journal Section | Research Articles |
Authors | |
Publication Date | December 1, 2010 |
Submission Date | December 1, 2010 |
Published in Issue | Year 2010 Volume: 2 Issue: 35 |
Journal Owner: On behalf of Selçuk University Faculty of Science, Rector Prof. Dr. Metin AKSOY
Selcuk University Journal of Science Faculty accepts articles in Turkish and English with original results in basic sciences and other applied sciences. The journal may also include compilations containing current innovations.
It was first published in 1981 as "S.Ü. Fen-Edebiyat Fakültesi Dergisi" and was published under this name until 1984 (Number 1-4).
In 1984, its name was changed to "S.Ü. Fen-Edeb. Fak. Fen Dergisi" and it was published under this name as of the 5th issue.
When the Faculty of Letters and Sciences was separated into the Faculty of Science and the Faculty of Letters with the decision of the Council of Ministers numbered 2008/4344 published in the Official Gazette dated 3 December 2008 and numbered 27073, it has been published as "Selcuk University Journal of Science Faculty" since 2009.
It has been scanned in DergiPark since 2016.
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