İlkay ATAR, İbrahim Halil BAŞBOĞA, Kadir KARAKUS, Fatih MENGELOĞLU

YÜKSEK YOĞUNLUKLU POLİETİLEN BAZLI POLİMER KOMPOZİTLERİN BAZI ÖZELLİKLERİ ÜZERİNE ATIK ÇAY ODUNU LİFLERİ VE MAPE’NİN ETKİSİ

Bu çalışmanın amacı termoplastik kompozitlerde atık çay odunu liflerinin kullanımı ve maleik anhidritle muamele edilmiş polietilenin etkisini araştırmaktır. Bu amaç doğrultusunda, matris olarak yüksek yoğunluklu polietilen (HDPE), lignoselülozik dolgu maddesi olarak atık çay odunu lifleri (WTWF) ve uyumlaştırıcı olarak da maleik anhidritle muamele edilmiş polietilen (MAPE) kullanılmıştır. Enjeksiyon kalıplama yöntemiyle %0-15-30 oranlarında WTWF dolgu maddesi ile MAPE’li ve MAPE’siz olmak üzere altı faklı kompozit üretilmiştir. Kompozit malzemelerin fiziksel, mekanik, termal ve morfolojik özellikleri belirlenmiştir. Sonuç olarak, termoplastik matriste WTWF oranını artması ile kompozitlerin çekme direnci, çekmede elastikiyet modülü, eğime direnci ve eğilmede elastikiyet modülü değerleri yükselmiştir. Fakat termoplastik matriste WTWF’in artması kompozitlerin kopmada uzama ve darbe direnci değerlerini azaltmıştır. Termoplastik matrise MAPE’nin eklenmesi ile kompozitlerin çekme direnci, eğilme direnci ve eğilmede elastikiyet modülü değerleri yükselmiştir. Termal özelliklere bakıldığında termoplastik matrise WTWF eklenmesi ile kompozitlerin kömür oranı artmıştır. Fakat başlangıç bozunma derecesi değişmemiştir. Atık çay odunu liflerinin HDPE bazlı termoplastik kompozitlerde dolgu maddesi olarak potansiyel bir kullanıma sahip olabileceği görülmektedir.

Anahtar Kelimeler:

Odun-plastik kompozit, lignoselülozik materyal atık çay odunu kimyasal analizi, Camellia Sinensis, enjeksiyon kalıplama.

EFFECT OF WASTE TEA (CAMELLIA SINENSIS) WOOD FIBERS AND MAPE ON SOME PROPERTIES OF HIGH DENSITY POLYETHYLENE (HDPE) BASED POLYMER COMPOSITES

The objective of this study was to investigate the utilization of waste tea wood fibers (WTWF) and effect of maleic anhydride treated polyethylene (MAPE) in thermoplastic composites. For this purpose, HDPE as matrix, WTWF as lignocellulosic filler and MAPE as coupling agent were used. Six different composites were produced by injection molding method; 0-15-30% WTWF filler ratio, with MAPE and without MAPE. The physical, mechanical, thermal and morphological properties of composite materials were determined. As a result, tensile strength, tensile modulus, flexural strength and flexural modulus of the composites were increased with the rise of the WTWF amount in the thermoplastic matrix. However, WTWF increase in the thermoplastic matrix reduced the elongation at break and impact strength of the produced composites. Addition of MAPE in thermoplastic matrix improved tensile strength, flexural strength and flexural modulus of manufactured composites. In the case of thermal properties, addition of WTWF into the thermoplastic matrix increased the char rate of the composites. However, the initial degradation did not change. It appears that waste tea wood fibers may have a potential usage as filler in the HDPE-based thermoplastic composites.

Keywords:

Wood- plastic composite lignocellulosic material, chemical analysis of waste tea wood, Camellia Sinensis, injection molding,

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