{"id":"https://openalex.org/W209957421","doi":"https://doi.org/10.4325/seikeikakou.25.547","title":"Removal of Oligomers from Polyethylene Terephthalate Resins by Supercritical Carbon Dioxide Extraction for Improving Properties of PET Films","display_name":"Removal of Oligomers from Polyethylene Terephthalate Resins by Supercritical Carbon Dioxide Extraction for Improving Properties of PET Films","publication_year":2013,"publication_date":"2013-01-01","ids":{"openalex":"https://openalex.org/W209957421","doi":"https://doi.org/10.4325/seikeikakou.25.547","mag":"209957421"},"language":"en","primary_location":{"id":"doi:10.4325/seikeikakou.25.547","doi":"https://doi.org/10.4325/seikeikakou.25.547","is_oa":true,"landing_page_url":"https://doi.org/10.4325/seikeikakou.25.547","pdf_url":"https://www.jstage.jst.go.jp/article/seikeikakou/25/11/25_547/_pdf","source":{"id":"https://openalex.org/S4210168455","display_name":"Seikei-Kakou","issn_l":"0915-4027","issn":["0915-4027","1883-7417"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Seikei-Kakou","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.jstage.jst.go.jp/article/seikeikakou/25/11/25_547/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5037168827","display_name":"Jun Inagaki","orcid":"https://orcid.org/0009-0002-8069-3670","observed_orcids":["https://orcid.org/0009-0002-8069-3670"]},"institutions":[{"id":"https://openalex.org/I122762857","display_name":"Toyobo (Japan)","ror":"https://ror.org/020a33943","country_code":"JP","type":"company","lineage":["https://openalex.org/I122762857"]},{"id":"https://openalex.org/I96036126","display_name":"Kumamoto University","ror":"https://ror.org/02cgss904","country_code":"JP","type":"education","lineage":["https://openalex.org/I96036126"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Jun Inagaki","raw_affiliation_strings":["Graduate School of Science and Technology, Kumamoto University","Tsuruga Films Technology Center, Toyobo Co., Ltd"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Science and Technology, Kumamoto University","institution_ids":["https://openalex.org/I96036126"]},{"raw_affiliation_string":"Tsuruga Films Technology Center, Toyobo Co., Ltd","institution_ids":["https://openalex.org/I122762857"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005585591","display_name":"Fumio Kawase","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I96036126","display_name":"Kumamoto University","ror":"https://ror.org/02cgss904","country_code":"JP","type":"education","lineage":["https://openalex.org/I96036126"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Fumio Kawase","raw_affiliation_strings":["Graduate School of Science and Technology, Kumamoto University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Science and Technology, Kumamoto University","institution_ids":["https://openalex.org/I96036126"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039677341","display_name":"Mitsuru Sasaki","orcid":"https://orcid.org/0000-0003-4045-7745","observed_orcids":["https://orcid.org/0000-0003-4045-7745"]},"institutions":[{"id":"https://openalex.org/I96036126","display_name":"Kumamoto University","ror":"https://ror.org/02cgss904","country_code":"JP","type":"education","lineage":["https://openalex.org/I96036126"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mitsuru Sasaki","raw_affiliation_strings":["Graduate School of Science and Technology, Kumamoto University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Science and Technology, Kumamoto University","institution_ids":["https://openalex.org/I96036126"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079646148","display_name":"Motonobu Goto","orcid":"https://orcid.org/0000-0003-3219-5028","observed_orcids":["https://orcid.org/0000-0003-3219-5028"]},"institutions":[{"id":"https://openalex.org/I60134161","display_name":"Nagoya University","ror":"https://ror.org/04chrp450","country_code":"JP","type":"education","lineage":["https://openalex.org/I60134161"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Motonobu Goto","raw_affiliation_strings":["Department of Chemical Engineering, Nagoya University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Chemical Engineering, Nagoya University","institution_ids":["https://openalex.org/I60134161"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5026419519","display_name":"Katsuya Ito","orcid":"https://orcid.org/0000-0001-6013-9336","observed_orcids":["https://orcid.org/0000-0001-6013-9336"]},"institutions":[{"id":"https://openalex.org/I122762857","display_name":"Toyobo (Japan)","ror":"https://ror.org/020a33943","country_code":"JP","type":"company","lineage":["https://openalex.org/I122762857"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Katsuya Ito","raw_affiliation_strings":["Tsuruga Films Technology Center, Toyobo Co., Ltd"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tsuruga Films Technology Center, Toyobo Co., Ltd","institution_ids":["https://openalex.org/I122762857"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.00984362,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":"25","issue":"11","first_page":"547","last_page":"551"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10402","display_name":"Phase Equilibria and Thermodynamics","score":0.8881999850273132,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10402","display_name":"Phase Equilibria and Thermodynamics","score":0.8881999850273132,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10389","display_name":"Polymer crystallization and properties","score":0.10670000314712524,"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/T12628","display_name":"Polymer Foaming and Composites","score":0.0017999999690800905,"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":0.9900000095367432},{"id":"https://openalex.org/keywords/supercritical-co2-extraction","display_name":"supercritical CO2 extraction","score":0.9570000171661377},{"id":"https://openalex.org/keywords/cyclic-trimer","display_name":"cyclic trimer","score":0.9700000286102295},{"id":"https://openalex.org/keywords/polyethylene-terephthalate-film","display_name":"PET film","score":0.703000009059906},{"id":"https://openalex.org/keywords/heat-treatment","display_name":"heat treatment","score":0.6940000057220459},{"id":"https://openalex.org/keywords/crystallinity","display_name":"crystallinity","score":0.8349999785423279}],"concepts":[{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.8438205122947693},{"id":"https://openalex.org/C46275449","wikidata":"https://www.wikidata.org/wiki/Q2458815","display_name":"Crystallinity","level":2,"score":0.8271805047988892},{"id":"https://openalex.org/C2776403692","wikidata":"https://www.wikidata.org/wiki/Q898416","display_name":"Trimer","level":3,"score":0.8063917756080627},{"id":"https://openalex.org/C2780330708","wikidata":"https://www.wikidata.org/wiki/Q408984","display_name":"Terephthalic acid","level":3,"score":0.7193243503570557},{"id":"https://openalex.org/C134458231","wikidata":"https://www.wikidata.org/wiki/Q332582","display_name":"Supercritical carbon dioxide","level":3,"score":0.7105517983436584},{"id":"https://openalex.org/C2780017307","wikidata":"https://www.wikidata.org/wiki/Q145863","display_name":"Polyethylene terephthalate","level":2,"score":0.6888720393180847},{"id":"https://openalex.org/C119394753","wikidata":"https://www.wikidata.org/wiki/Q188245","display_name":"Polyester","level":2,"score":0.5837007164955139},{"id":"https://openalex.org/C42360764","wikidata":"https://www.wikidata.org/wiki/Q83588","display_name":"Chemical engineering","level":1,"score":0.5811403393745422},{"id":"https://openalex.org/C166940927","wikidata":"https://www.wikidata.org/wiki/Q178827","display_name":"Monomer","level":3,"score":0.555835485458374},{"id":"https://openalex.org/C2780642029","wikidata":"https://www.wikidata.org/wiki/Q726004","display_name":"Oligomer","level":2,"score":0.501814603805542},{"id":"https://openalex.org/C44228677","wikidata":"https://www.wikidata.org/wiki/Q181898","display_name":"Polymerization","level":3,"score":0.48288631439208984},{"id":"https://openalex.org/C4725764","wikidata":"https://www.wikidata.org/wiki/Q844704","display_name":"Extraction (chemistry)","level":2,"score":0.4819624125957489},{"id":"https://openalex.org/C2778597550","wikidata":"https://www.wikidata.org/wiki/Q151313","display_name":"Ethylene","level":3,"score":0.4664774537086487},{"id":"https://openalex.org/C49852136","wikidata":"https://www.wikidata.org/wiki/Q906487","display_name":"Depolymerization","level":2,"score":0.4651302695274353},{"id":"https://openalex.org/C188027245","wikidata":"https://www.wikidata.org/wiki/Q750446","display_name":"Polymer chemistry","level":1,"score":0.45995891094207764},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.2758902311325073},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.23230063915252686},{"id":"https://openalex.org/C521977710","wikidata":"https://www.wikidata.org/wiki/Q81163","display_name":"Polymer","level":2,"score":0.21923643350601196},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.09921714663505554},{"id":"https://openalex.org/C2779546866","wikidata":"https://www.wikidata.org/wiki/Q531306","display_name":"Dimer","level":2,"score":0.0},{"id":"https://openalex.org/C161790260","wikidata":"https://www.wikidata.org/wiki/Q82264","display_name":"Catalysis","level":2,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4325/seikeikakou.25.547","doi":"https://doi.org/10.4325/seikeikakou.25.547","is_oa":true,"landing_page_url":"https://doi.org/10.4325/seikeikakou.25.547","pdf_url":"https://www.jstage.jst.go.jp/article/seikeikakou/25/11/25_547/_pdf","source":{"id":"https://openalex.org/S4210168455","display_name":"Seikei-Kakou","issn_l":"0915-4027","issn":["0915-4027","1883-7417"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Seikei-Kakou","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.4325/seikeikakou.25.547","doi":"https://doi.org/10.4325/seikeikakou.25.547","is_oa":true,"landing_page_url":"https://doi.org/10.4325/seikeikakou.25.547","pdf_url":"https://www.jstage.jst.go.jp/article/seikeikakou/25/11/25_547/_pdf","source":{"id":"https://openalex.org/S4210168455","display_name":"Seikei-Kakou","issn_l":"0915-4027","issn":["0915-4027","1883-7417"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Seikei-Kakou","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Responsible consumption and production","id":"https://metadata.un.org/sdg/12","score":0.8799999952316284}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W209957421.pdf","grobid_xml":"https://content.openalex.org/works/W209957421.grobid-xml"},"referenced_works_count":10,"referenced_works":["https://openalex.org/W2016014265","https://openalex.org/W2018969353","https://openalex.org/W2032542863","https://openalex.org/W2074864824","https://openalex.org/W2078581209","https://openalex.org/W2085627758","https://openalex.org/W2092039103","https://openalex.org/W2130220029","https://openalex.org/W2132063506","https://openalex.org/W2331961116"],"related_works":["https://openalex.org/W2004867231","https://openalex.org/W2335651157","https://openalex.org/W4412642300","https://openalex.org/W2014457631","https://openalex.org/W2963136279","https://openalex.org/W7137618108","https://openalex.org/W1972393371","https://openalex.org/W2908740784","https://openalex.org/W2025285705","https://openalex.org/W2027637524"],"abstract_inverted_index":{"PET":[0,75,107,112,144,165,174,181,193],"materials":[1],"contain":[2],"small":[3],"concentrations":[4],"of":[5,16,45,49,69,74,87,111,170,180,191,198,201],"monomers":[6],"and":[7,19,129],"low":[8,26],"molecular-weight":[9],"oligomers":[10,29,51,70],"formed":[11],"during":[12],"the":[13,33,36,53,58,67,84,88,92,96,139,143,164,178,189,199,215],"condensation":[14],"polymerization":[15],"ethylene":[17],"glycol":[18],"terephthalic":[20],"acid":[21],"as":[22],"byproducts.":[23],"All":[24],"those":[25],"molecular":[27],"weight":[28],"can":[30,55],"migrate":[31],"to":[32,65,214],"surface":[34,54,94],"if":[35,177],"film":[37,93,217],"is":[38,63],"treated":[39],"at":[40],"high":[41],"temperatures":[42,128],"for":[43,71,152],"tens":[44],"minutes.":[46],"The":[47,157],"presence":[48],"these":[50],"on":[52,91],"interfere":[56],"with":[57,114],"manufacturing":[59],"process,":[60],"so":[61],"it":[62,135],"important":[64],"reduce":[66],"concentration":[68],"improving":[72],"properties":[73],"films.":[76],"In":[77],"this":[78,104,150,209],"study,":[79],"we":[80],"first":[81],"confirmed":[82],"that":[83,138,171,188,208],"principal":[85],"component":[86,105],"crystalline":[89],"deposits":[90],"after":[95],"thermal":[97],"treatment":[98],"was":[99,136,146,167,183,195,205],"cyclic":[100,140,160],"trimer.":[101],"To":[102],"remove":[103],"from":[106],"resins,":[108],"extraction":[109,130],"experiments":[110],"resins":[113,166,175,182,194],"supercritical":[115],"carbon":[116],"dioxide":[117],"(sc-CO2)":[118],"were":[119],"carried":[120],"out":[121],"using":[122],"a":[123,133],"semi-batch":[124],"apparatus":[125],"under":[126],"various":[127],"times.":[131],"As":[132],"result,":[134],"found":[137,207],"trimer":[141,161],"in":[142,159,163,172],"residue":[145],"partially":[147],"removed":[148],"by":[149],"technique":[151,210],"long":[153],"processing":[154],"times":[155],"(2-8h).":[156],"decrease":[158],"content":[162],"approximately":[168],"10%":[169],"untreated":[173],"even":[176],"crystallinity":[179,200],"changed.":[184],"This":[185],"finding":[186],"indicates":[187],"production":[190],"low-oligomer-content":[192],"realized":[196],"regardless":[197],"starting":[202],"materials.":[203],"It":[204],"also":[206],"may":[211],"be":[212],"applicable":[213],"polyester":[216],"industry.":[218]},"counts_by_year":[{"year":2024,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}