HDPE/ZnO ve HDPE/Hidroksiapatit Nanokompozitlerin Termal ve Morfolojik Özelliklerinin İncelenmesi

Yıl 2020, Cilt: 32 Sayı: 1, 259 - 266, 03.03.2020

Betul Çiçek Ozkan Melek Güner Tarık Selçuk Şeker

https://doi.org/10.35234/fumbd.652773

Öz

Yüksek yoğunluklu polietilen (HDPE) matrisine farklı oranlarda çinko oksit (ZnO) ve hidroksiapatit (HAp) nano parçacıklar takviye edilerek baskı tekniği ile farklı konsantrasyonlarda nanokompozit malzemeler üretilmiştir. Kullanılan nano takviye malzemelerinin ve kompozit üretim yönteminin HDPE matrisli kompozitler üzerindeki termal, morfolojik ve kristalinite özellikleri araştırılmıştır. Hazırlanan kompozitlerin X-ışını kırınım deseni (XRD) yöntemi kullanılarak kristalinite özellikleri incelenmiş ve HDPE’nin karakteristik 2θ pikleri elde edilmiştir. HDPE/ZnO nanokompoziti için ZnO fazına ait olan 2θ pikleri tespit edilmiş ve ortalama kristal boyutunun 14 ile 26 nm arasında değiştiği belirlenmiştir. HDPE/HAp nano kompozitinde HAp fazına ait olan 2θ pikleri ve ortalama 10 ile 25 nm arasında değişen kristal boyutları tespit edilmiştir. XRD sonuçları her iki kompozit içerisinde nano takviye malzemelerinin iyi bir biçimde dağıldığını göstermektedir. Ayrıca artan takviye miktarı ile kompozitin kristalinitesinin arttığı belirlenmiştir. Termal analiz sonucunda her iki kompozit grubu için tespit edilen takviye oranının gerçek değerlerle örtüştüğü ve artan takviye miktarıyla ısı akısının arttığı belirlenmiştir. Morfolojik incelemeler sonucunda nanokompozit malzemelerin yüzey yapısının saf HDPE’den farklı olduğu, tabakalanmaların meydana geldiği ve artan takviye miktarıyla bu değişimin daha net bir biçimde görüldüğü gözlenmiştir.

Anahtar Kelimeler

Yüksek yoğunluklu polietilen (HDPE), Çinko Oksit, Hidroksiapatit, Nano kompozit, Termal Stabilite

Kaynakça

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