Montmorillonit / HEC ve Sepiyolit / HEC Nanokompozitlerinin Termal Özelliklerinin Karşılaştırılması

Bu çalışmada hidroksietil seliloz (HEC) polimerinin yapısal ve termal özellikleri üzerine NaMontmorillonit (NaMMT) yada Sepiolit (Sp) kil ilavelerinin etkilerini inceleyebilmek için kil-polimer nanokompozitleri hazırlanmıştır. Polimerik filmler HEC polimerinin sulu çözeltisi ile killerin sulu dispersiyonlarının birleştirilmesi esasına dayanan çözeltilerin birleştirilmesi yöntemi ile hazırlanmıştır. Suda çözülebilen polimer matrikslerinde çözeltilerin birleştirilmesi yöntemi polimerin kararlılığı, killerin kolayca dağılabilmesi bakımından kullanışlı bir yöntemdir. Hazırlanan nanokompoziteler Fourier Transform infrered (FT/IR) ve geçirimli elektron mikroskopisi (TEM) yöntemleri ile karakterize edilmiş, termal özellikleri termogravimetrik analiz (TGA) ve taramalı diferansiyel kalorimetri (DSC) yöntemleri ile araştırılmıştır.

Thermal Comparison of Montmorillonite / HEC and Sepiolite / HEC nanocomposites

In this study, clay-polymer nanocomposite films were prepared to examine the effects of the addition of clay minerals on the structural and thermal properties of Hydroxyethyl Cellulose (HEC). Polymeric films were prepared by “solution casting method” which is also known as the method of mixing solutions based on the mixing of aqueous dispersion of HEC polymer with aqueous solution of clays. The method of mixing solutes in water-soluble polymer matrices is a useful method in that the stability of the polymer is improved and the clays can be easily dispersed. The structure of nanocomposites characterized by FT/IR and TEM analysis. The structure of nanocomposites have been characterized by Fourier Transform İnfrared spectroscopy (FT/IR) and Transmission Electron Microscopy (TEM) analysis. Their thermal properties have been determined by Thermogravimetric (TGA) and Differential Scanning Calorimetric (DSC) methods.

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