Effects of concentration and surface silanization of barite on the mechanical and physical properties of poly(lactic acid)/barite composites

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dc.authoridDIKE, ALI SINAN/0000-0001-6214-6070
dc.contributor.authorHatipoglu, Aygun
dc.contributor.authorDike, Ali Sinan
dc.date.accessioned2025-01-06T17:44:02Z
dc.date.available2025-01-06T17:44:02Z
dc.date.issued2020
dc.description.abstractNeat and surface silanized barite (BR) was compounded with poly(lactic acid) (PLA) at the loading range of 5, 10, 15, and 20 wt% by melt blending process. Surface characteristics of BR samples were examined by infrared spectroscopy in attenuated total reflectance mode. Mechanical, thermal, water resistance, melt flow, and morphological characterizations of composites were performed by tensile and impact tests, dynamic mechanical analysis, water absorption test, melt flow rate (MFR) test, and scanning electron microscopy (SEM) analysis, respectively. BR additions lead to increase in tensile strength and modulus of PLA. The maximum improvement is obtained for 15 wt% of silanized BR containing composite. In contrast, percent elongation of PLA decreases with the incorporation of BR. Treated BR-loaded composites give higher impact energy values compared to untreated BR. Impact performance of composites increases with concentration. Silanized BR-filled composite at 5 wt% concentration exhibits higher storage modulus than unfilled PLA, where other composites yield relatively lower values in the case of storage modulus. Glass transition temperature of PLA extends to higher values by the addition of BR. Inclusions of BR samples cause a slight decrease in MFR of unfilled PLA. Water absorption of composites is found to be higher than that of PLA. Silanized BR-filled composites display lower water absorption values compared to untreated BR, thanks to hydrophobic nature of Si containing surface. According to SEM microimages of composites, more homogeneous dispersion in PLA matrix is achieved for treated BR particles than neat ones due to enhancement for interfacial adhesion of BR to PLA after silanization.
dc.identifier.doi10.1177/0967391119883083
dc.identifier.endpage148
dc.identifier.issn0967-3911
dc.identifier.issn1478-2391
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85074511857
dc.identifier.scopusqualityQ2
dc.identifier.startpage140
dc.identifier.urihttps://doi.org/10.1177/0967391119883083
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2892
dc.identifier.volume28
dc.identifier.wosWOS:000509318100006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSage Publications Ltd
dc.relation.ispartofPolymers & Polymer Composites
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectPoly(lactic acid)
dc.subjectgreen composites
dc.subjectbarite
dc.subjectmelt compounding
dc.subjectpolymer composites
dc.titleEffects of concentration and surface silanization of barite on the mechanical and physical properties of poly(lactic acid)/barite composites
dc.typeArticle

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