{"id":"https://openalex.org/W2012296770","doi":"https://doi.org/10.1002/pola.1987.080251004","title":"Synthesis and properties of new polybenzimidazoles and N\u2010phenyl polybenzimidazoles with flexibilizing spacers on the polymer backbone","display_name":"Synthesis and properties of new polybenzimidazoles and N\u2010phenyl polybenzimidazoles with flexibilizing spacers on the polymer backbone","publication_year":1987,"publication_date":"1987-10-01","ids":{"openalex":"https://openalex.org/W2012296770","doi":"https://doi.org/10.1002/pola.1987.080251004","mag":"2012296770"},"language":"en","primary_location":{"id":"doi:10.1002/pola.1987.080251004","doi":"https://doi.org/10.1002/pola.1987.080251004","is_oa":false,"landing_page_url":"https://doi.org/10.1002/pola.1987.080251004","pdf_url":null,"source":{"id":"https://openalex.org/S92465984","display_name":"Journal of Polymer Science Part A Polymer Chemistry","issn_l":"0887-624X","issn":["0887-624X","1099-0518"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","poland-70","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Polymer Science Part A: Polymer Chemistry","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046551924","display_name":"K. J. Scariah","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I71374576","display_name":"Vikram Sarabhai Space Centre","ror":"https://ror.org/03trnsb56","country_code":"IN","type":"facility","lineage":["https://openalex.org/I71374576"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"K. J. Scariah","raw_affiliation_strings":["Vikram Sarabhai Space Centre, Trivandrum 695022, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Vikram Sarabhai Space Centre, Trivandrum 695022, India","institution_ids":["https://openalex.org/I71374576"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066323009","display_name":"V. N. Krishnamurthy","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I71374576","display_name":"Vikram Sarabhai Space Centre","ror":"https://ror.org/03trnsb56","country_code":"IN","type":"facility","lineage":["https://openalex.org/I71374576"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"V. N. Krishnamurthy","raw_affiliation_strings":["Vikram Sarabhai Space Centre, Trivandrum 695022, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Vikram Sarabhai Space Centre, Trivandrum 695022, India","institution_ids":["https://openalex.org/I71374576"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026664542","display_name":"K. V. C. Rao","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I71374576","display_name":"Vikram Sarabhai Space Centre","ror":"https://ror.org/03trnsb56","country_code":"IN","type":"facility","lineage":["https://openalex.org/I71374576"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"K. V. C. Rao","raw_affiliation_strings":["Vikram Sarabhai Space Centre, Trivandrum 695022, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Vikram Sarabhai Space Centre, Trivandrum 695022, India","institution_ids":["https://openalex.org/I71374576"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5113520013","display_name":"M. Srinivasan","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I24676775","display_name":"Indian Institute of Technology Madras","ror":"https://ror.org/03v0r5n49","country_code":"IN","type":"education","lineage":["https://openalex.org/I24676775"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"M. Srinivasan","raw_affiliation_strings":["Department of Chemistry, Indian Institute of Technology, Madras 600036, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Chemistry, Indian Institute of Technology, Madras 600036, India","institution_ids":["https://openalex.org/I24676775"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":3200,"currency":"USD","value_usd":3200},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"25","issue":"10","first_page":"2675","last_page":"2687"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12084","display_name":"Synthesis and properties of polymers","score":0.9976000189781189,"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/T12084","display_name":"Synthesis and properties of polymers","score":0.9976000189781189,"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/T11362","display_name":"Membrane Separation and Gas Transport","score":0.00039999998989515007,"subfield":{"id":"https://openalex.org/subfields/1506","display_name":"Filtration and Separation"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14303","display_name":"Polymer Synthesis and Characterization","score":0.0003000000142492354,"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/polybenzimidazole","display_name":"polybenzimidazole","score":0.9990000128746033},{"id":"https://openalex.org/keywords/polyphosphoric-acid","display_name":"polyphosphoric acid","score":0.8489999771118164},{"id":"https://openalex.org/keywords/high-temperature-polycondensation","display_name":"high-temperature polycondensation","score":0.7630000114440918},{"id":"https://openalex.org/keywords/thermal-stability","display_name":"thermal stability","score":0.6589999794960022},{"id":"https://openalex.org/keywords/crystallinity","display_name":"crystallinity","score":0.8169999718666077},{"id":"https://openalex.org/keywords/solubility","display_name":"solubility","score":0.8029999732971191},{"id":"https://openalex.org/keywords/density","display_name":"density","score":0.5709999799728394}],"concepts":[{"id":"https://openalex.org/C2775926321","wikidata":"https://www.wikidata.org/wiki/Q7706594","display_name":"Tetramine","level":2,"score":0.9077171087265015},{"id":"https://openalex.org/C46275449","wikidata":"https://www.wikidata.org/wiki/Q2458815","display_name":"Crystallinity","level":2,"score":0.714499831199646},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.6931314468383789},{"id":"https://openalex.org/C53033327","wikidata":"https://www.wikidata.org/wiki/Q2371697","display_name":"Condensation polymer","level":3,"score":0.6644003987312317},{"id":"https://openalex.org/C188027245","wikidata":"https://www.wikidata.org/wiki/Q750446","display_name":"Polymer chemistry","level":1,"score":0.6533958315849304},{"id":"https://openalex.org/C521977710","wikidata":"https://www.wikidata.org/wiki/Q81163","display_name":"Polymer","level":2,"score":0.6170482635498047},{"id":"https://openalex.org/C155574463","wikidata":"https://www.wikidata.org/wiki/Q170731","display_name":"Solubility","level":2,"score":0.58686763048172},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.5310925245285034},{"id":"https://openalex.org/C2776460385","wikidata":"https://www.wikidata.org/wiki/Q420060","display_name":"Hydrochloride","level":2,"score":0.5020017623901367},{"id":"https://openalex.org/C153642686","wikidata":"https://www.wikidata.org/wiki/Q70906","display_name":"Infrared spectroscopy","level":2,"score":0.4808569550514221},{"id":"https://openalex.org/C160892712","wikidata":"https://www.wikidata.org/wiki/Q901559","display_name":"Fourier transform infrared spectroscopy","level":2,"score":0.41027140617370605},{"id":"https://openalex.org/C13965031","wikidata":"https://www.wikidata.org/wiki/Q243545","display_name":"Nuclear chemistry","level":1,"score":0.36268195509910583},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.27160435914993286},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.19292324781417847},{"id":"https://openalex.org/C147789679","wikidata":"https://www.wikidata.org/wiki/Q11372","display_name":"Physical chemistry","level":1,"score":0.13011378049850464},{"id":"https://openalex.org/C42360764","wikidata":"https://www.wikidata.org/wiki/Q83588","display_name":"Chemical engineering","level":1,"score":0.09403201937675476},{"id":"https://openalex.org/C8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","level":1,"score":0.06172102689743042},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/pola.1987.080251004","doi":"https://doi.org/10.1002/pola.1987.080251004","is_oa":false,"landing_page_url":"https://doi.org/10.1002/pola.1987.080251004","pdf_url":null,"source":{"id":"https://openalex.org/S92465984","display_name":"Journal of Polymer Science Part A Polymer Chemistry","issn_l":"0887-624X","issn":["0887-624X","1099-0518"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","poland-70","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Polymer Science Part A: Polymer Chemistry","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W1577380322","https://openalex.org/W1956726549","https://openalex.org/W1964563191","https://openalex.org/W1979382751","https://openalex.org/W2019423311","https://openalex.org/W2065348388","https://openalex.org/W2067278873","https://openalex.org/W2074348073","https://openalex.org/W2084543307","https://openalex.org/W2087278877","https://openalex.org/W2118349017","https://openalex.org/W2122332753","https://openalex.org/W2151513360","https://openalex.org/W2168562227","https://openalex.org/W2169365236","https://openalex.org/W2315769000","https://openalex.org/W4243365660","https://openalex.org/W4244737915"],"related_works":["https://openalex.org/W2064750872","https://openalex.org/W2071225212","https://openalex.org/W2246894471","https://openalex.org/W1983870343","https://openalex.org/W2118349017","https://openalex.org/W3019710686","https://openalex.org/W4250577587","https://openalex.org/W2365610281","https://openalex.org/W2075312716","https://openalex.org/W1983184646"],"abstract_inverted_index":{"Abstract":[0],"Several":[1],"new":[2],"polybenzimidazoles":[3],"(PBIs)":[4],"and":[5,20,38,82,89,102,105],"N\u2010phenyl":[6,22],"PBIs":[7,81],"were":[8,25,54,71,84,108],"synthesized":[9,73],"by":[10,86],"high":[11,50],"temperature":[12],"solution":[13],"polycondensation":[14],"techniques.":[15],"Three":[16],"different":[17],"tetramine":[18,23],"hydrochlorides":[19],"one":[21],"hydrochloride":[24],"condensed":[26],"independently":[27],"with":[28,59],"p\u2010phenylenedioxydiacetic":[29],"acid":[30,35,42,47],"(PDDA),":[31],"2,2\u2032\u2010[isopropylidene":[32],"bis(p\u2010phenyleneoxy)]":[33,40],"diacetic":[34,41],"(bisacid":[36,43],"A2)":[37],"2,2\u2032\u2010[sulfonyl":[39],"S)":[44],"in":[45,56,62],"polyphosphoric":[46],"(PPA)":[48],"at":[49],"temperatures.":[51],"The":[52,80,92],"polymers":[53,96],"obtained":[55],"55\u201365%":[57],"yield":[58],"inherent":[60],"viscosities":[61],"the":[63,76,95],"range":[64],"0.58\u20130.96":[65],"dL/g.":[66],"Four":[67],"model":[68],"benzimidazoles":[69],"(MBI)":[70],"also":[72],"to":[74],"confirm":[75],"formation":[77],"of":[78,94],"polybenzimidazoles.":[79],"MBIs":[83],"characterized":[85],"infrared":[87],"spectroscopy":[88],"elemental":[90],"analysis.":[91],"properties":[93],"such":[97],"as":[98],"solubility,":[99],"density,":[100],"crystallinity,":[101],"thermal,":[103],"thermoxidative,":[104],"isothermal":[106],"stabilities":[107],"studied.":[109]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}