{"corpus_id":93300596,"paper_sha":"60af01a4823e5d5fd5bd299e6d4f7b2dcd3b3c17","doi":"10.1063/1.1723803","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":1987209504,"dblp_id":null,"acl_id":null,"title":"Theory of Molecular Size Distribution and Gel Formation in Branched‐Chain Polymers","year":1943,"publication_date":"1943-02-01","venue":"","journal":{"name":"Journal of Chemical Physics","pages":"45-55","volume":"11"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Chemistry"],"reference_count":10,"citation_count":1422,"influential_citation_count":25,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"The most probable distributions of molecular sizes are calculated for certain types of branched-chain polymers. The results represent an extension of the previous work of Flory, who showed that very large polymeric molecules appear suddenly at a critical extent of reaction, which is predicted to occur very nearly at the experimentally observed gel point. This transition from liquid to gel is shown to be analagous to the condensation of a saturated vapor. It is believed that the size distributions obtained herein will aid in a study of viscosity-molecular weight relationships in branched-chain polymers.","claims":[{"public_id":"cl_4cc8e35c56c29b721e3a5dabbe168afd","status":"active","text":"Most probable molecular-size distributions are calculated for certain branched-chain polymers.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_4cc8e35c56c29b721e3a5dabbe168afd"},{"public_id":"cl_41c56f107765d408224ab028dc8dfd2f","status":"active","text":"The calculation extends Flory's earlier work on the sudden appearance of very large polymeric molecules at a critical extent of reaction near the gel point.","confidence":0.93,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_41c56f107765d408224ab028dc8dfd2f"},{"public_id":"cl_8eacde9c595cc9001dc505d52f51f633","status":"active","text":"The derived size distributions are expected to aid studies of viscosity-molecular weight relationships in branched-chain polymers.","confidence":0.88,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_8eacde9c595cc9001dc505d52f51f633"},{"public_id":"cl_b81e6fc2f8ca13598a2172079723c7c2","status":"active","text":"The liquid-to-gel transition is analogous to the condensation of a saturated vapor.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_b81e6fc2f8ca13598a2172079723c7c2"}],"concepts":[{"public_id":"co_2218f41fdea6bd04ea4b38ae77e8a1d4","status":"active","name":"branched-chain polymers","description":"Polymers with chain branching, considered as the molecular systems analyzed in the paper.","types":["material"],"aliases":["branched polymers"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_2218f41fdea6bd04ea4b38ae77e8a1d4"},{"public_id":"co_2d90288963018bbcf61584a82845842f","status":"active","name":"Flory's earlier work","description":"Prior theoretical work by Flory on gelation and the emergence of very large polymeric molecules.","types":["prior work"],"aliases":["previous work of Flory"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_2d90288963018bbcf61584a82845842f"},{"public_id":"co_7020eed71baeec1eed105e366d489c48","status":"active","name":"viscosity-molecular weight relationships","description":"Relationships between a polymer's viscosity and its molecular weight.","types":["relationship"],"aliases":["viscosity versus molecular weight"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_7020eed71baeec1eed105e366d489c48"},{"public_id":"co_84ea42af9699e9b4535593f18dd3d73e","status":"active","name":"molecular size distributions","description":"The distributions of polymer molecular sizes computed for branched-chain polymer systems.","types":["theoretical result"],"aliases":["size distributions"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_84ea42af9699e9b4535593f18dd3d73e"},{"public_id":"co_876efa72e6569120751180713f6f4e4a","status":"active","name":"critical extent of reaction","description":"The reaction extent at which the abrupt appearance of very large polymeric molecules is predicted to occur.","types":["parameter"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_876efa72e6569120751180713f6f4e4a"},{"public_id":"co_8cc021847309bddaa7eabb689cd450e9","status":"active","name":"gel point","description":"The experimental point at which a polymerizing system undergoes gelation.","types":["phase-transition point"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_8cc021847309bddaa7eabb689cd450e9"},{"public_id":"co_ea04494daedc3cce5e4f021713a9613c","status":"active","name":"liquid-to-gel transition","description":"The transformation of a polymerizing system from a liquid state into a gel state.","types":["phase transition"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_ea04494daedc3cce5e4f021713a9613c"},{"public_id":"co_f6457e88e73eb1d2ac53e338471f71ba","status":"active","name":"condensation of a saturated vapor","description":"A phase-change process used here as an analogy for gel formation.","types":["analogy"],"aliases":["saturated vapor condensation"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_f6457e88e73eb1d2ac53e338471f71ba"}],"external_ids":{"DOI":"10.1063/1.1723803","ArXiv":null,"PubMed":null,"PubMedCentral":null,"MAG":1987209504,"DBLP":null,"ACL":null},"open_access":{"is_open_access":false,"pdf_url":null,"landing_url":"https://sah.borca.ai/papers/93300596","source":null,"pdf_url_source":null,"license":null,"reason":"pdf_url_not_indexed"},"reference_availability":{"status":"available","references_indexed":true,"full_text_available":false,"full_text_source":null,"count_basis":"semantic_scholar_metadata","extraction_status":"not_applicable","reason":null},"source":{"provider":"episteme2","base_corpus":"semantic_scholar_dump","freshness_mode":"unknown","basis":["semantic_scholar_metadata","postgres_metadata"],"limits":["paper metadata is based on indexed upstream scholarly datasets","claims and concepts are available only for extracted papers","absence of claims or concepts means no extracted graph data is available in this response"],"status":"available","degraded":false,"degraded_reasons":[],"diagnostics":{"status":"available","degraded":false,"degraded_reasons":[],"metadata_status":"available","graph_status":"available","abstract_status":"available"},"source_flags":1},"paper_id":632197,"paper_uid":"b4a2a3ad-b496-42a7-8cd0-42c6493c0d91","canonical_identity":{"paper_id":632197,"paper_uid":"b4a2a3ad-b496-42a7-8cd0-42c6493c0d91","identity_status":"available","lookup_basis":"semantic_scholar_external_id","compatibility_path":"corpus_id"},"url":"https://sah.borca.ai/papers/93300596"}