{"doi":"10.1002/app.1981.070260702","title":"Multiple molecular relaxations of hot‐drawn and quenched polymers above their glass transition temperatures","abstract":"<jats:title>Abstract</jats:title><jats:p>Thermal shrinkage of highly hot‐drawn and quenched poly(methyl methacrylate) and polycarbonate of bisphenol A were measured. PMMA shows three‐step thermal shrinkage under suitable experimental conditions above its glass transition temperature (<jats:italic>T</jats:italic><jats:sub><jats:italic>g</jats:italic></jats:sub>). Polycarbonate exhibits four kinds of molecular relaxation associated with shrinkage around and above its <jats:italic>T</jats:italic><jats:sub><jats:italic>g</jats:italic></jats:sub>. The effect of hot‐drawing and quenching conditions on shrinking behavior is discussed. Almost all of the molecular relaxations are observed above <jats:italic>T</jats:italic><jats:sub><jats:italic>g</jats:italic></jats:sub>. The molecular origins of the relaxations are discussed in relation with the so‐called <jats:italic>T</jats:italic><jats:sub>11</jats:sub> transitions of polymers.</jats:p>","journal":"Journal of Applied Polymer Science","year":1981,"id":26664,"datarank":2.4005294902887893,"base_score":2.4849066497880004,"endowment":2.4849066497880004,"self_citation_contribution":0.37273599746820013,"citation_network_contribution":2.027793492820589,"self_endowment_contribution":0.37273599746820013,"citer_contribution":2.027793492820589,"corpus_percentile":null,"corpus_rank":null,"citation_count":11,"citer_count":11,"citers_with_citation_signal":11,"citers_with_endowment":11,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":153759,"name":"N. Yanagihara","orcid":null,"position":1,"is_corresponding":false},{"id":125203,"name":"T. Kato","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":2.4849066497880004,"endowment":2.4849066497880004,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"18998881","pmcid":null,"openalex_id":"https://openalex.org/W2125077544","authors":[],"funders":[],"total_grants":0,"fwci":2.0273,"citation_percentile":0.86579824,"influential_citations":0,"citation_trend":[],"oa_status":"closed","license":"http://onlinelibrary.wiley.com/termsAndConditions#vor","oa_locations":[{"url":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fapp.1981.070260702","host_type":"publisher"},{"url":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/app.1981.070260702","host_type":"publisher"},{"url":"https://doi.org/10.1002/app.1981.070260702","host_type":"journal"}],"fields_of_study":["Polymer crystallization and properties","Polymer Nanocomposites and Properties","Epoxy Resin Curing Processes","Materials Science"],"mesh_terms":[],"keywords":["Polycarbonate","Glass transition","Shrinkage","Materials science","Relaxation (psychology)","Polymer","Quenching (fluorescence)","Thermal","Methyl methacrylate","Polymer chemistry","Composite material","Thermodynamics","Polymerization","Optics","Physics"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-08T15:10:25.377842Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}