Lütfiye Altay

ORCID: 0000-0003-4946-3615
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Research Areas
  • Tribology and Wear Analysis
  • Fiber-reinforced polymer composites
  • Refrigeration and Air Conditioning Technologies
  • Polymer Nanocomposites and Properties
  • Flame retardant materials and properties
  • Thermal properties of materials
  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Heat Transfer and Optimization
  • Natural Fiber Reinforced Composites
  • Advanced Thermodynamic Systems and Engines
  • Fire dynamics and safety research
  • Graphene research and applications
  • Carbon Nanotubes in Composites
  • Polymer crystallization and properties
  • Adsorption and Cooling Systems
  • Material Properties and Applications
  • Advanced Thermodynamics and Statistical Mechanics
  • Silicone and Siloxane Chemistry
  • Solar Thermal and Photovoltaic Systems
  • Synthesis and properties of polymers
  • Textile materials and evaluations
  • biodegradable polymer synthesis and properties
  • Law, logistics, and international trade
  • Additive Manufacturing and 3D Printing Technologies
  • Heat Transfer and Boiling Studies

Ege University
2017-2025

Caerus Molecular Diagnostics (United States)
2018

Concordia University
2018

Virginia Commonwealth University
2018

Wuhan University
2018

Beijing University of Chemical Technology
2018

Abstract Polyamide 4.6 has excellent properties, such as high temperature resistance, crystallinity, fatigue melting temperature, creep toughness, and good wear but low thermal conductivity values. For this reason, its use in applications been limited. In study, can be increased by increasing with carbon‐based fillers reinforcements added to the PA46 structure. The aim of study is examine carbon fiber (CF), synthetic graphite (SG) graphene nanoplatelet (G) loading on mechanical, thermal,...

10.1002/pc.26174 article EN Polymer Composites 2021-07-15

Polypropylene (PP) was filled with synthetic graphite (SG) and graphene nanoplatelets (G) at different weight fractions. Composites were prepared by the melt mixing process using a co‐rotating twin screw extruder. Mechanical tests carried out to determine tensile flexural properties of composites. Dynamic Analysis composites performed their thermo‐mechanical properties, such as storage modulus loss modulus. Scanning Electron Microscopy used observe fracture surfaces after tests. The effect...

10.1002/pc.24643 article EN Polymer Composites 2018-01-17

Polylactic acid/Polycarbonate (PLA/PC) blend was prepared via twin screw extruder by taking the bio-based content as much possible and better mechanical, thermal, impact properties into consideration. Flame retardant (FR) performance of PLA/PC improved using mixture ammonium polyphosphate, triphenyl phosphate, zinc borate. FR evaluated according to UL 94 test standard. The variations in tensile flexural strength, Izod-notched strength values were determined. In order reduce total amount...

10.1016/j.aiepr.2023.09.003 article EN cc-by-nc-nd Advanced Industrial and Engineering Polymer Research 2024-07-01

This study investigates the mechanical, thermal, and flammability properties of glass fiber (GF) reinforced polyphthalamide (PPA)composites with addition flame retardant (FR) additive zeolite. The tensile flexural strengths composites were obtained to decrease upon FR zeolite, PPA-GFexhibiting highest strength 195 MPa. IzodImpact testing revealed a similar trend, where both notched unnotched impact reduced by incorporation these additives. Scanning electron microscopy (SEM) indicated poor...

10.1177/08927057251344275 article EN Journal of Thermoplastic Composite Materials 2025-05-19

Recycled carbon fiber reinforced polypropylene (PP) composites were fabricated by using high speed thermo‐kinetic mixer. The effect of recycled on the morphological, chemical, physical, thermal, and mechanical properties PP was investigated. results indicate that tensile flexural strength increase with addition up to 20 wt%. When 40 wt% added into PP, moduli increased about 177 359%, respectively. coefficient thermal expansion found be decreased increasing weight fraction. low fraction...

10.1002/pc.24394 article EN Polymer Composites 2017-04-22

Abstract The aim of this study is to demonstrate whether Carpinus betulus L. (CB) powder can be used as an alternative filler/reinforcement material for polypropylene (PP). About 5, 10, 15, and 20 wt% CB loaded PP composites were prepared by a high‐speed thermokinetic mixer. In article, the effects weight fraction within on thermal, viscoelastic, chemical, mechanical, crystallographic, morphological properties investigated tensile three‐point bending test, dynamic mechanic analysis,...

10.1002/pc.25508 article EN Polymer Composites 2020-01-10

ABSTRACT To increase the mechanical properties of recycled carbon fiber‐reinforced polypropylene (PP) composites, fibers (RCF) were subjected to atmospheric plasma treatment at different powers (100, 200, and 300 W). The changes on surface topography roughness RCF examined by atomic force microscopy. Plasma increased value RCF. variation elemental compositions tensile strength determined using X‐ray photoelectron spectroscopy test, respectively. Plasma‐treated RCF‐reinforced PP composites...

10.1002/app.47131 article EN Journal of Applied Polymer Science 2018-10-12

Pumice stone (P), which is as a cheap material, can be good candidate for filling material polymers because of its high thermal resistance. Its effect on properties polypropylene (PP) has not been studied in detail up to now. The mechanical, viscoelastic, thermal, morphological, crystallographic, and thermomechanical behaviors PP filled with P powder were studied. composites produced by adding different weight fractions (0–40 wt%) into using high-speed thermo kinetic mixer compression...

10.1177/0892705718785692 article EN Journal of Thermoplastic Composite Materials 2018-07-18

Abstract Natural flammability properties of acrylonitrile butadiene styrene (ABS) seriously limit the use ABS polymers in industries. Improving performance by using halogenated additives has been a very common method past. However, with increasing environmental awareness, halogen‐containing severely limited over time. Therefore, we aimed to halogen‐free flame‐retardant our study improve ABS. ABS‐based composites containing 20, 25, 30 % aluminum diethyl‐phosphinate (AlPi) and ammonium...

10.1002/slct.202300989 article EN ChemistrySelect 2023-11-05

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10.1080/15440478.2023.2172641 article EN cc-by Journal of Natural Fibers 2023-02-05

Polybutylene terephthalate (PBT) is a semi-crystalline engineering thermoplastic polyester. PBT offers rapid molding cycles, high heat resistant, crystallinity, fatigue resistance, strength and rigidity, excellent electrical properties, creep reproducible mold shrinkage chemical resistance. In this study, was loaded with synthetic graphite carbon fiber at different weight fractions (10–40 wt.%). PBT-based composites were fabricated by the melt mixing process using co-rotating twin screw...

10.1177/08927057211018491 article EN Journal of Thermoplastic Composite Materials 2021-05-19

Carbon (C) fibers have important advantages because of their high strength, stiffness, specific fatigue behavior and lower density. The fiber the epoxy interaction is always a problem for many composite systems including other fibers. fiber/matrix can be improved by using physical chemical treatments in order to achieve enhanced interfacial interlaminar properties. Interlaminar properties are key factors performance carbon composites. surface treatment create active surfaces sizing agent one...

10.1680/jemmr.18.00164 article EN Emerging Materials Research 2019-12-19

It is known that polyphenylene sulfide (PPS), which a semi-crystalline aromatic polymer, exhibits high thermal stability, outstanding chemical resistance, and excellent flame retardancy properties. However PPS has poor electrical conductivity, limits their uses in some applications where conductivity required for heat dissipation or storing efficiently. In order to improve of Polyphenylene PPS-Synthetic graphite (SG) composites were produced by using twin-screw extrusion. SG at different...

10.1063/1.5142948 article EN AIP conference proceedings 2020-01-01

Syndiotactic polystyrene (SPS) has attracted considerable attention recently due to its high melting temperature, low cost, and relatively density value. The aim of the study is reveal whether a blend PPS SPS (PPS-SPS) can be used instead for thermal stability, mechanical performance, conductive material applications. For this aim, poly(phenylene sulfide)/syndiotactic polystyrene-based carbon-loaded composite materials were prepared using twin screw extruder. Two carbon-based materials,...

10.1021/acsomega.2c06152 article EN cc-by-nc-nd ACS Omega 2022-12-02
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