Polikaprolakton Kompozitlerinin Hazırlanması ve Karakterizasyonu

HACALOĞLU ,Jale

Proje Yürütücüsü:

Jale HACALOĞLU

(Orta Doğu Teknik Üniversitesi, Kimya Bölümü, Ankara, Türkiye)

Proje Grubu: TÜBİTAK KBAG ProjeSayfa Sayısı: 74Proje No: 116Z100Proje Bitiş Tarihi: 15.01.2018Metin Dili: Türkçe

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Türkçe
İngilizce

Polikaprolakton Kompozitlerinin Hazırlanması ve Karakterizasyonu

Öz: Bu çalışmada organik düzenleyici kullanılarak modifiye edilmiş Kloisit 30B, C30B, ve Kloisit 15A, C15A içeren polikaprolakton, PCL, nanokompozitleri, çeşitli miktarlarda benzen diboronik asit, BDBA, çinko borat, ZnB, ve borik asit, H3BO3 içeren polikaprolakton kompozitleri ve hem nanokil hem de bor bileşikleri içeren PCL nanokompozitleri hem çözelti de hem de eriyikte harmanlama yöntemleri ile hazırlanmış ve örneklerin morfolojik ısıl ve mekanik özellikleri saptanmıştır.

Abstract: In this project, nanocomposites of polycaprolactone, PCL involving organically modified Cloisite 30B, C30B and Cloisite 15A, C15A and polycaprolactone nanocomposites involving various amounts benzene diboronic acid, BDBA, zinc borate ZnB, and boric acid H 3 BO 3 and composites involving both nanoclays and boron compounds were prepared by solution casting and by melt blending techniques. Furthermore, fibers of PCL involving C30B, BDBA and both were prepared. Morphologic, therrmal and mechanical properties of these samples were determined. It has been determined that clay layers were separated more efficiently and more homogenous nanocomposites were obtained when solution casting was used. The trans-esterication reactions between OH groups present in the organic modifier of C30B and BDBA and PCL caused decrease in thermal stability of PCL. Addtion of zinc borate did not affect thermal stability noticeably. On the other hand, addition of H 3 BO 3 decreased thermal stability. Mechanical characteristics were almost independent of the additives. Contrary to the results obtained for C30B involving composites, when C15A was used as organically modified nanoclay no evidence for decrease in thermal stability was detected. The effect of boron compounds was similar to what was observed for nanocomposites involving C30B. Again decrease in thermal stability upon addition of BDBA and H 3 BO 3 was detected. It has been determined by TGA and DPMS analyses that the thermal properties of fibers involving both C30B and BDBA were not significantly affected by the presence of additives. The resuts obtained in this project indicated that the most effective way to increase thermal stability of PCL are the use of C15A and ZnB as additives.

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