Biochar Reinforced Polyvinyl Alcohol /Corn Starch Biocomposites

Year 2020, Volume: 24 Issue: 1, 35 - 42, 20.04.2020

Pınar Terzioğlu , Fatma Nur Parın

https://doi.org/10.19113/sdufenbed.568229

Cited By: 6

Abstract

The utilization of biochar in polymer composites can be considered as a sustainable approach that provide valorization of a waste to a value-added material and at the same time diminish biowaste in a smart way. This study is focused on the evaluation of biochar as a filler in polyvinyl alcohol /corn starch composites. The composites were prepared via solution mixing and casting method using citric acid as a plasticizer and glutaraldehyde as a cross-linker. Distribution of biochar in the PVA/starch matrix was evaluated by optical microscopy. The structural features of composites were characterized using FTIR spectroscopy. Effects of biochar loading ratio (0-12 wt%) on the thermal stability of the PVA/starch blends were determined by differential scanning calorimetry and thermogravimetric analyses. The decomposition temperatures of the PVA/starch/biochar composites decreased in comparison to PVA/starch composites. 

Keywords

Biochar, Cross-linked composite, Polyvinylalcohol, Starch

Thanks

Synpet Technologiesis thanked for supplying the biochar.

Biyokömür Takviyeli Polivinil Alkol /Mısır Nişastası Biyokompozitler

Abstract

Biyokömürün polimer kompozitlerde kullanılması, atığın katma değerli bir malzeme olarak değerlenmesini sağlayan ve aynı zamanda biyo-atığı akıllıca azaltan sürdürülebilir bir yaklaşım olarak düşünülebilir. Bu çalışma, polivinil alkol /mısır nişastası kompozitlerinde biyokömürün dolgu maddesi olarak değerlendirilmesine odaklanmıştır. Kompozitler, plastikleştirici olarak sitrik asit ve çapraz bağlayıcı olarak glutaraldehit kullanılarak çözelti karıştırma ve döküm yöntemi ile hazırlandı. PVA / nişasta matrisindeki biyokömür dağılımı optik mikroskop ile değerlendirildi. Kompozitlerin yapısal özellikleri FTIR spektroskopisi kullanılarak karakterize edildi. Biyokömür oranının (ağırlıkça %0-12) PVA/nişasta karışımının ısıl kararlılığı üzerindeki etkileri diferansiyel taramalı kalorimetre ve termogravimetrik analizle belirlendi. PVA/nişasta /biyokömür kompozitlerin bozunma sıcaklıkları, PVA/nişasta kompozitlerine kıyasla azaldı. 

Keywords

Biyokömür, Çapraz bağlı kompozit, Polivinil alkol, Nişasta

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