- Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi
- Vol: 20 Issue: 1
- Türk Pomza Mineralinin Modifikasyonu ve Poli (Laktik Asit) Bazlı Biyo-Kompozit Malzemelerinde Eklent...
Türk Pomza Mineralinin Modifikasyonu ve Poli (Laktik Asit) Bazlı Biyo-Kompozit Malzemelerinde Eklenti Olarak Kullanımı
Authors : Ali Sinan DİKE
Pages : 111-117
Doi:10.35414/akufemubid.618993
View : 17 | Download : 5
Publication Date : 2020-03-17
Article Type : Research
Abstract :In this study, Turkish pumice (P) mineral was treated with silane in order to increase the compatibility for poly(lactic acid) (PLA) which is a fully biodegradable polymer widely used in packaging and outdoor applications. Neat and treated P powders were compounded with PLA at the concentrations of 5, 10, 15 and 20 wt% by melt mixing process. Surface characteristics of P samples were examined using infrared spectroscopy. Mechanical, water uptake, melt-flow and morphological properties of prepared composites were investigated by tensile and impact tests, water absorption test, melt flow rate test (MFR) and scanning electron microscopy (SEM) technique, respectively. Mechanical test results revealed that the highest increase in tensile strength and modulus values was obtained for 15 wt% of silanized P containing composite. Silane treated P additions to PLA caused increase in impact energy compared to untreated P sample. Impact energies of composites increased with concentration. Silanized P filled composite gave slightly higher MFR values with respect to pristine P. Water absorption of composites were found as higher than that of unfilled PLA. Composites containing silanized P exhibited lower water uptake values compared to untreated P samples because of the hydrophobic character of silicon containing surfaces. SEM micro-images of composites displayed that more homogeneous dispersion in PLA matrix was taken place for silane treated P particles than that of neat P stem from the increase of adhesion between P and PLA surfaces after silanization process.Keywords : Pumice, Poly (lactic acid), Bio-composites, Extrusion, Polymer composites