Synthesis and Characterization of Limonene-Based Sulfur Polymer

Yıl 2021, Sayı: 28, 1517 - 1520, 30.11.2021

Ramazan Orhan , Ercan Aydoğmuş

https://doi.org/10.31590/ejosat.1022852

Öz

In this research, a sulfur-based polymer has been synthesized with limonene extracted from orange peels. The synthesis process has been carried out by dropping limonene at 0 wt.%, 0.5 wt.%, 1 wt.%, 2 wt.%, and 4 wt.% ratios into the molten sulfur. The change in the chemical bond structure of the synthesized sulfur-based polymer is determined by Fourier Transform Infrared Spectrophotometer (FTIR). Moreover, the density, Shore D hardness, and thermal conductivity coefficient of the sulfur-based polymer are also characterized. According to the evaluations, it has been seen that limonene extracted from 1% orange peel gave the best results. It has been observed that the polymerization efficiency is low when used below 1 wt.% by mass. At higher rates, Shore D hardness of the sulfur-based polymer decreases, thus a softer polymer is obtained. Besides, the density of the sulfur-based polymer is approximately 2067 kg/m3, and the thermal conductivity coefficient is measured at an average of 0.25 W/m·K. As the content of limonene in the polymer mixture raises, the thermal conductivity coefficient decreases and a more porous structure is formed.

Anahtar Kelimeler

Limonene, sulfur polymer, synthesis, characterization

Limonen Bazlı Kükürt Polimerinin Sentezi ve Karakterizasyonu

Öz

Bu araştırmada, portakal kabuklarından ekstrakte edilen limonen ile kükürt bazlı bir polimer sentezlenmiştir. Sentez işlemi, erimiş kükürt içerisine kütlece % 0, % 0.5, % 1, % 2 ve % 4 oranında limonen damlatılarak gerçekleştirilmiştir. Sentezlenen kükürt bazlı polimerin kimyasal bağ yapısındaki değişiklik Fourier Dönüşümü Kızılötesi Spektrofotometresi (FTIR) ile belirlenmiştir. Ayrıca, kükürt bazlı polimerin yoğunluğu, Shore D sertliği ve termal iletkenlik katsayısı da karakterize edilmiştir. Yapılan değerlendirmelere göre en iyi sonuçlar ağırlıkça % 1 portakal kabuğundan ekstrakte edilen limonen ile elde edilmiştir. Kütlece % 1'in altında limonen kullanıldığında polimerizasyon veriminin düşük olduğu gözlemlenmiştir. Daha yüksek oranlarda limonene kullanımı kükürt bazlı polimerin Shore D sertliği azaltmış ve böylece daha yumuşak bir polimer sentezlenmiştir. Ayrıca, kükürt bazlı polimerin ortalama yoğunluğu yaklaşık 2067 kg/m3 ve ısıl iletkenlik katsayısı da 0.25 W/m·K olarak ölçülmüştür. Polimer karışımındaki limonen içeriği arttıkça ısıl iletkenlik katsayısı düşmüş ve daha gözenekli bir yapı oluşmuştur.

Anahtar Kelimeler

Limonen, Kükürt polimeri, Sentez, Karakterizasyon

Kaynakça

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