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Improvement of Mechanical and Physical Properties of Polyurethane Elastomer/Jute Fiber Eco-Composites By Applying Proper Treatments To Fiber Surfaces

BROWSE_DETAIL_CREATION_DATE: 01-08-2017

BROWSE_DETAIL_IDENTIFIER_SECTION

BROWSE_DETAIL_TYPE: Thesis

BROWSE_DETAIL_SUB_TYPE: Masters

BROWSE_DETAIL_PUBLISH_STATE: Unpublished

BROWSE_DETAIL_FORMAT: PDF Document

BROWSE_DETAIL_LANG: English

BROWSE_DETAIL_SUBJECTS: Chemical technology, Chemical engineering,

BROWSE_DETAIL_CREATORS: Salem, Tuffaha Fathe Salem (Author), Tirkeş, Seha (Author),

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Polyurethane Elastomer, Jute Fiber, Surface Treatment, Eco-composite.


BROWSE_DETAIL_TAB_ABSTRACT

In this study, chopped jute fiber (JF) samples were surface treated by alkaline (Na),silane(Si) and eco-grade epoxy resin(EP). Surface characteristics of jute fibers wereexamined by FTIR and EDX analysis. JF filled polyurethane elastomer (TPU)composites were prepared via melt compounding. The effect of surface modificationsof JF on mechanical, damping, melt-flow and morphological properties of TPUbased eco-composites were investigated by performing tensile and Shore hardnesstests, dynamic mechanical analysis (DMA), melt flow index (MFI) test and scanningelectron microscopy (SEM) techniques, respectively.Mechanical test results showed that silane and epoxy treated JF improved the tensilestrength and tensile modulus of unfilled TPU. Elongation at break of TPU decreaseddrastically with all kind of JF inclusions. All of the surface treatments resultedincrease in hardness value of TPU. Similarly with mechanical test results, Si-JF andEP-JF containing composites showed enhancement on storage modulus. Glasstransition temperature (Tg) of TPU rised up to higher temperatures after JF additions.Inclusions of JF caused increase for MFI value of neat TPU. Silane and epoxy treatedJFs displayed homogeneous dispersion into TPU and their surface were covered bypolymer phase according to SEM microphotographs.


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