{"id":"https://openalex.org/W7225752828","doi":"https://doi.org/10.3390/engproc2026157055","title":"Comparative Investigation of the Viscoelastic Behavior of Virgin and Recycled PET by DMA: The Role of Rigid and Mobile Amorphous Fractions","display_name":"Comparative Investigation of the Viscoelastic Behavior of Virgin and Recycled PET by DMA: The Role of Rigid and Mobile Amorphous Fractions","publication_year":2026,"publication_date":"2026-11-06","ids":{"openalex":"https://openalex.org/W7225752828","doi":"https://doi.org/10.3390/engproc2026157055"},"language":"en","primary_location":{"id":"doi:10.3390/engproc2026157055","doi":"https://doi.org/10.3390/engproc2026157055","is_oa":true,"landing_page_url":"https://doi.org/10.3390/engproc2026157055","pdf_url":null,"source":{"id":"https://openalex.org/S7407120682","display_name":"Sustainable Mobility and Transportation Symposium","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Sustainable Mobility and Transportation Symposium 2026","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.3390/engproc2026157055","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5015313338","display_name":"P\u00e1l Hans\u00e1ghy","orcid":"https://orcid.org/0009-0009-4007-821X","observed_orcids":["https://orcid.org/0009-0009-4007-821X"]},"institutions":[{"id":"https://openalex.org/I103356709","display_name":"Obuda University","ror":"https://ror.org/00ax71d21","country_code":"HU","type":"education","lineage":["https://openalex.org/I103356709"]},{"id":"https://openalex.org/I4210142209","display_name":"John von Neumann University","ror":"https://ror.org/03n9qzd79","country_code":"HU","type":"education","lineage":["https://openalex.org/I4210142209"]}],"countries":["HU"],"is_corresponding":true,"raw_author_name":"P\u00e1l Hans\u00e1ghy","raw_affiliation_strings":["Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary","Doctoral School of Materials Sciences and Technologies, Obuda University, 1034 Budapest, Hungary"],"raw_orcid":"https://orcid.org/0009-0009-4007-821X","affiliations":[{"raw_affiliation_string":"Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary","institution_ids":["https://openalex.org/I4210142209"]},{"raw_affiliation_string":"Doctoral School of Materials Sciences and Technologies, Obuda University, 1034 Budapest, Hungary","institution_ids":["https://openalex.org/I103356709"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5093403725","display_name":"P\u00e9ter Gerse","orcid":"https://orcid.org/0009-0006-5036-3936","observed_orcids":["https://orcid.org/0009-0006-5036-3936"]},"institutions":[{"id":"https://openalex.org/I103356709","display_name":"Obuda University","ror":"https://ror.org/00ax71d21","country_code":"HU","type":"education","lineage":["https://openalex.org/I103356709"]},{"id":"https://openalex.org/I4210142209","display_name":"John von Neumann University","ror":"https://ror.org/03n9qzd79","country_code":"HU","type":"education","lineage":["https://openalex.org/I4210142209"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"P\u00e9ter Gerse","raw_affiliation_strings":["Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary","Doctoral School of Materials Sciences and Technologies, Obuda University, 1034 Budapest, Hungary"],"raw_orcid":"https://orcid.org/0009-0006-5036-3936","affiliations":[{"raw_affiliation_string":"Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary","institution_ids":["https://openalex.org/I4210142209"]},{"raw_affiliation_string":"Doctoral School of Materials Sciences and Technologies, Obuda University, 1034 Budapest, Hungary","institution_ids":["https://openalex.org/I103356709"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5085368224","display_name":"Attila Bata","orcid":"https://orcid.org/0009-0001-0022-0906","observed_orcids":["https://orcid.org/0009-0001-0022-0906"]},"institutions":[{"id":"https://openalex.org/I4210142209","display_name":"John von Neumann University","ror":"https://ror.org/03n9qzd79","country_code":"HU","type":"education","lineage":["https://openalex.org/I4210142209"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Attila Bata","raw_affiliation_strings":["Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary"],"raw_orcid":"https://orcid.org/0009-0001-0022-0906","affiliations":[{"raw_affiliation_string":"Department of Innovative Vehicles and Materials, GAMF Faculty of Engineering and Computer Science, John von Neumann University, 6000 Kecskem\u00e9t, Hungary","institution_ids":["https://openalex.org/I4210142209"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5015313338"],"corresponding_institution_ids":["https://openalex.org/I103356709","https://openalex.org/I4210142209"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"55","last_page":"55"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10389","display_name":"Polymer crystallization and properties","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2507","display_name":"Polymers and Plastics"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10389","display_name":"Polymer crystallization and properties","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2507","display_name":"Polymers and Plastics"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10474","display_name":"Material Dynamics and Properties","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10810","display_name":"Polymer composites and self-healing","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2507","display_name":"Polymers and Plastics"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/polyethylene-terephthalate","display_name":"polyethylene terephthalate","score":0.9929999709129333},{"id":"https://openalex.org/keywords/mechanical-recycling","display_name":"mechanical recycling","score":0.8629999756813049},{"id":"https://openalex.org/keywords/recycled-pet","display_name":"recycled PET","score":0.7179999947547913},{"id":"https://openalex.org/keywords/viscoelastic-behavior","display_name":"viscoelastic behavior","score":0.9769999980926514},{"id":"https://openalex.org/keywords/crystalline-volume-fraction","display_name":"crystalline fraction","score":0.7730000019073486},{"id":"https://openalex.org/keywords/amorphous-fraction","display_name":"amorphous fraction","score":0.8539999723434448},{"id":"https://openalex.org/keywords/rigid-amorphous-fraction","display_name":"rigid amorphous fraction","score":0.8930000066757202},{"id":"https://openalex.org/keywords/storage-modulus","display_name":"storage modulus","score":0.7519999742507935},{"id":"https://openalex.org/keywords/glass-transition-temperature","display_name":"glass transition temperature","score":0.8840000033378601},{"id":"https://openalex.org/keywords/phase-composition","display_name":"phase composition","score":0.6840000152587891}],"concepts":[{"id":"https://openalex.org/C39519442","wikidata":"https://www.wikidata.org/wiki/Q904893","display_name":"Differential scanning calorimetry","level":2,"score":0.8503999710083008},{"id":"https://openalex.org/C46275449","wikidata":"https://www.wikidata.org/wiki/Q2458815","display_name":"Crystallinity","level":2,"score":0.8210999965667725},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.8181999921798706},{"id":"https://openalex.org/C56052488","wikidata":"https://www.wikidata.org/wiki/Q103382","display_name":"Amorphous solid","level":2,"score":0.7943999767303467},{"id":"https://openalex.org/C186541917","wikidata":"https://www.wikidata.org/wiki/Q910483","display_name":"Viscoelasticity","level":2,"score":0.7394000291824341},{"id":"https://openalex.org/C7055690","wikidata":"https://www.wikidata.org/wiki/Q900639","display_name":"Dynamic mechanical analysis","level":3,"score":0.659600019454956},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.6531999707221985},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.5490999817848206},{"id":"https://openalex.org/C2776029896","wikidata":"https://www.wikidata.org/wiki/Q3935810","display_name":"Relaxation (psychology)","level":2,"score":0.4959999918937683},{"id":"https://openalex.org/C191204318","wikidata":"https://www.wikidata.org/wiki/Q246574","display_name":"Dynamic modulus","level":4,"score":0.4918000102043152},{"id":"https://openalex.org/C149629883","wikidata":"https://www.wikidata.org/wiki/Q660926","display_name":"Fraction (chemistry)","level":2,"score":0.4496000111103058},{"id":"https://openalex.org/C193867417","wikidata":"https://www.wikidata.org/wiki/Q6889814","display_name":"Modulus","level":2,"score":0.38350000977516174},{"id":"https://openalex.org/C87976508","wikidata":"https://www.wikidata.org/wiki/Q1498213","display_name":"Microstructure","level":2,"score":0.36980000138282776},{"id":"https://openalex.org/C202270520","wikidata":"https://www.wikidata.org/wiki/Q634314","display_name":"Calorimetry","level":2,"score":0.35740000009536743},{"id":"https://openalex.org/C122865956","wikidata":"https://www.wikidata.org/wiki/Q825643","display_name":"Glass transition","level":3,"score":0.30399999022483826},{"id":"https://openalex.org/C200990466","wikidata":"https://www.wikidata.org/wiki/Q271707","display_name":"Rheology","level":2,"score":0.29580000042915344},{"id":"https://openalex.org/C521977710","wikidata":"https://www.wikidata.org/wiki/Q81163","display_name":"Polymer","level":2,"score":0.2840999960899353},{"id":"https://openalex.org/C149849071","wikidata":"https://www.wikidata.org/wiki/Q1263816","display_name":"Chemical composition","level":2,"score":0.2741999924182892},{"id":"https://openalex.org/C116628846","wikidata":"https://www.wikidata.org/wiki/Q899138","display_name":"Mass fraction","level":2,"score":0.273499995470047},{"id":"https://openalex.org/C2778119658","wikidata":"https://www.wikidata.org/wiki/Q1806889","display_name":"Phase-change material","level":3,"score":0.26669999957084656},{"id":"https://openalex.org/C40231798","wikidata":"https://www.wikidata.org/wiki/Q1333743","display_name":"Composition (language)","level":2,"score":0.2554999887943268}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3390/engproc2026157055","doi":"https://doi.org/10.3390/engproc2026157055","is_oa":true,"landing_page_url":"https://doi.org/10.3390/engproc2026157055","pdf_url":null,"source":{"id":"https://openalex.org/S7407120682","display_name":"Sustainable Mobility and Transportation Symposium","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Sustainable Mobility and Transportation Symposium 2026","raw_type":"proceedings-article"}],"best_oa_location":{"id":"doi:10.3390/engproc2026157055","doi":"https://doi.org/10.3390/engproc2026157055","is_oa":true,"landing_page_url":"https://doi.org/10.3390/engproc2026157055","pdf_url":null,"source":{"id":"https://openalex.org/S7407120682","display_name":"Sustainable Mobility and Transportation Symposium","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Sustainable Mobility and Transportation Symposium 2026","raw_type":"proceedings-article"},"sustainable_development_goals":[{"display_name":"Responsible consumption and production","score":0.807699978351593,"id":"https://metadata.un.org/sdg/12"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W2053082287","https://openalex.org/W2072313042","https://openalex.org/W2493974509","https://openalex.org/W3106715001","https://openalex.org/W4213365052","https://openalex.org/W4221082738","https://openalex.org/W4231119208","https://openalex.org/W4389300295","https://openalex.org/W4403213208","https://openalex.org/W4405023534"],"related_works":["https://openalex.org/W2053082287","https://openalex.org/W2275823035","https://openalex.org/W4415388389","https://openalex.org/W1984690436","https://openalex.org/W2542118078","https://openalex.org/W2096630466","https://openalex.org/W4389300295","https://openalex.org/W4241421605","https://openalex.org/W2053931831","https://openalex.org/W1990339927"],"abstract_inverted_index":{"The":[0,47,146],"present":[1],"study":[2],"investigates":[3],"the":[4,11,73,92,115,158],"effect":[5],"of":[6,17,79,161],"repeated":[7,107],"mechanical":[8,44],"recycling":[9,33],"on":[10,67],"phase":[12,77,155],"composition":[13,78,156],"and":[14,24,30,42,55,75,88,149,157],"viscoelastic":[15,159],"behavior":[16,128],"injection-molded":[18],"poly(ethylene":[19],"terephthalate)":[20],"(PET).":[21],"Virgin":[22],"PET":[23,164],"materials":[25],"subjected":[26],"to":[27],"one,":[28],"two,":[29],"three":[31],"consecutive":[32],"cycles":[34],"were":[35,60,132,138],"characterized":[36],"using":[37,62],"differential":[38],"scanning":[39],"calorimetry":[40],"(DSC)":[41],"dynamic":[43],"analysis":[45],"(DMA).":[46],"crystalline":[48,74],"fraction":[49,53,58],"(CRF),":[50],"mobile":[51],"amorphous":[52,57,76,93],"(MAF),":[54],"rigid":[56],"(RAF)":[59],"determined":[61],"a":[63,82],"three-phase":[64],"model":[65],"based":[66],"DSC":[68,148],"measurements.":[69],"Recycling":[70],"modified":[71],"both":[72],"PET,":[80],"producing":[81],"moderate":[83],"increase":[84],"in":[85,91,126],"mean":[86,103],"crystallinity":[87],"non-monotonic":[89],"changes":[90],"fractions.":[94],"DMA":[95,150],"measurements":[96],"showed":[97],"an":[98],"overall":[99],"tendency":[100],"toward":[101],"higher":[102],"storage":[104],"modulus":[105],"after":[106],"recycling,":[108],"although":[109],"specimen-to-specimen":[110],"scatter":[111],"was":[112],"considerable,":[113],"whereas":[114],"glass-transition":[116],"temperatures":[117],"changed":[118],"only":[119],"slightly.":[120],"Normalized":[121],"modulus-plane":[122],"trajectories":[123],"indicated":[124],"differences":[125],"relaxation":[127],"but,":[129],"because":[130],"they":[131],"obtained":[133],"from":[134],"single-frequency":[135],"temperature":[136],"sweeps,":[137],"not":[139],"interpreted":[140],"as":[141],"conventional":[142],"frequency-domain":[143],"Cole\u2013Cole":[144],"spectra.":[145],"combined":[147],"results":[151],"reveal":[152],"associations":[153],"between":[154],"response":[160],"mechanically":[162],"recycled":[163],"while":[165],"also":[166],"identifying":[167],"important":[168],"experimental":[169],"limitations.":[170]},"counts_by_year":[],"updated_date":"2026-11-12T12:28:57.059296","created_date":"2026-11-11T00:00:00"}