Publication:
Fumed silica filled poly(dimethylsiloxane-urea) segmented copolymers: preparation and properties

dc.contributor.coauthorMalay, Özge
dc.contributor.coauthorOğuz, Oğuzhan
dc.contributor.coauthorMenceloğlu, Yusuf Z.
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorSöz, Çağla
dc.contributor.kuauthorYılgör, Emel
dc.contributor.kuauthorYılgör, İskender
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T23:03:52Z
dc.date.issued2012
dc.description.abstractNovel fumed silica filled thermoplastic poly(dimethylsiloxane-urea) (TPSU) segmented copolymers were synthesized and characterized. TPSU copolymers were prepared from a cycloaliphatic diisocyanate, aminopropyl terminated PDMS oligomers with number average molecular weights of 3,200, 10,800 and 31,500 g/mol and 2-methyl-1,5-diaminopentane chain extender. Two different types of fumed silica HDK H2000 (hydrophobic) and HDK N20 (hydrophilic) were utilized and incorporated into silicone-urea copolymers in amounts of 1-60% by weight. Influence of the silica type (hydrophilic versus hydrophobic), amount of silica loading and the PDMS soft segment molecular weight on the morphology, tensile properties and modulus-temperature behavior of the nanocomposites were determined. Major observations of this study were: (i) under the blending conditions used, incorporation of silica does not seem to interfere significantly with the hydrogen bonding between urea groups, (ii) incorporation of silica does not affect the glass transition temperature of PDMS, (iii) incorporation of silica influences the tensile and thermomechanical properties of silicone-urea segmented copolymers significantly, (iv) average molecular weight of the PDMS soft segment in the silicone-urea copolymer plays a critical role on the improvement of the tensile properties of the fumed silica/TPSU composites.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume243
dc.identifier.eissnN/A
dc.identifier.issn0065-7727
dc.identifier.quartileN/A
dc.identifier.scopus2-s2.0-84855830450
dc.identifier.urihttps://hdl.handle.net/20.500.14288/8541
dc.identifier.wos324503204721
dc.keywordsChemistry
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofAbstracts of Papers of The American Chemical Society
dc.subjectChemistry
dc.titleFumed silica filled poly(dimethylsiloxane-urea) segmented copolymers: preparation and properties
dc.typeMeeting Abstract
dspace.entity.typePublication
local.contributor.kuauthorSöz, Çağla Koşak
local.contributor.kuauthorYılgör, Emel
local.contributor.kuauthorYılgör, İskender
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2Graduate School of Sciences and Engineering
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