Reinforcement of high density polyethylene with a side chain LCP by graft copolymerization-thermal, mechanical and morphological properties

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dc.authorid0000-0002-9244-026Xen_US
dc.authorid0000-0001-7930-4442
dc.contributor.authorSoykan, Uğur
dc.contributor.authorÇetin, Sedat
dc.date.accessioned2021-06-23T19:37:32Z
dc.date.available2021-06-23T19:37:32Z
dc.date.issued2015
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.description.abstractIn this study, high density polyethylene (PE) has been reinforced with a side chain LCP by graft copolymerization of p-benzophenoneoxycarbonylphenyl acrylate (BPOCPA). The mechanical and thermal behavior of the graft coproducts were investigated in relation to the structural changes (in unit cell parameters) of PE matrix. The crystalline melting temperature of PE, varying consistently with the poly(BPOCPA) content in the coproducts, significantly increased (from 131 degrees C to 132-138 degrees C). The unit cell dimensions, a and b, of the orthorhombic structure, the ab basal area and particle size of PE crystals initially expanded, and then consistently contracted with the graft content. The c parameter, however, remained relatively unchanged. Remarkable improvements were achieved in the tensile properties of the material; with the maxima of 38% increase in tensile strength and 67 % increase in Young's modulus with the coproduct comprising 9.3 % poly(BPOCPA). These developments were found to be explained by the advances in the orientation and alignment of PE chains, conduced by greater chain mobility in the larger ab basal area and intensifying cohesive forces arising from the glassy nematic structured graft units. Furthermore, SEM analyses of the coproducts showed completely homogeneous structures without any phase separation. At low contents, the samples were mainly ductile, whereas at high contents, they displayed brittle nature that increased with poly(BPOCPA) percentage. Moreover, TG analyses demonstrated that both homo and grafted polymers commenced to degrade predominantly at about 275 degrees C. The decomposition of poly(BPOCPA) graft units was explicitly retarded by PE matrix in the coproducts.en_US
dc.identifier.doi10.1007/s10965-015-0851-y
dc.identifier.issn1022-9760
dc.identifier.issn1572-8935
dc.identifier.issue11en_US
dc.identifier.scopus2-s2.0-84942897836en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/s10965-015-0851-y
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8175
dc.identifier.volume22en_US
dc.identifier.wosWOS:000369857100001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorSoykan, Uğur
dc.institutionauthorÇetin, Sedat
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Polymer Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPolyethyleneen_US
dc.subjectp-benzophenoneoxycarbonylphenyl Acrylateen_US
dc.subjectPoly(p-benzophenoneoxycarbonylphenyl acrylate)en_US
dc.subjectSide Chain Liquid Crystalline Polymersen_US
dc.subjectGraft Copolymerizationen_US
dc.subjectUnit Cell Parameters of Polyethyleneen_US
dc.titleReinforcement of high density polyethylene with a side chain LCP by graft copolymerization-thermal, mechanical and morphological propertiesen_US
dc.typeArticleen_US

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