Matches in SemOpenAlex for { <https://semopenalex.org/work/W1844930174> ?p ?o ?g. }
Showing items 1 to 94 of
94
with 100 items per page.
- W1844930174 endingPage "435" @default.
- W1844930174 startingPage "423" @default.
- W1844930174 abstract "The synthesis and characterization of a highly processable thermosetting polyimide system based on 22'-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride or bisphenol A dianhydride (BPA-DA) endcapped with 4-phenylethynylphthalic anhydride is described. The system afforded oligomers that were readily melt processable at high curing temperatures (380-420 CC). Imide oligomers ranging from MR = 2000 to 40 000 g molI and copolyimides were synthesized using the ester acid of the dianhydrides and either meta- and/or para-phenylene diamines as comonomers via solution imidization techniques. The oligomers were shown to display low melt viscosity values and to flow under low pressure during compression moulding. The thermally cured polymers formed tough creasable films and displayed excellent solvent resistance which was correlated to their high gel fractions (>95%). Very significant increases in glass transition temperatures were observed after cure of a 3000., oligomer. The mera-phenylene diamine-based polymer exhibited a cured T s approximately 30C lower (233C) than the para:meta (70:30) system (267C). The all para-phenylene diamine-based homopolymers could be completely cyclized in solution but crystallized at room temperature to produce fine insoluble powders. The resulting moderately semicrystalline homopolymer showed a TM of up to 321 'C which was not observed on the second heating. These polyimides also show excellent thermal stability as judged by thermogravimetric analysis (TGA) and are being examined as structural adhesives and matrix resins." @default.
- W1844930174 created "2016-06-24" @default.
- W1844930174 creator A5020415084 @default.
- W1844930174 creator A5039499896 @default.
- W1844930174 creator A5063117066 @default.
- W1844930174 date "1994-08-01" @default.
- W1844930174 modified "2023-09-26" @default.
- W1844930174 title "Solvent-resistant polyetherimide network systems via phenylethynylphthalic anhydride endcapping" @default.
- W1844930174 cites W1951302413 @default.
- W1844930174 cites W2024536147 @default.
- W1844930174 cites W2084393821 @default.
- W1844930174 cites W2332628890 @default.
- W1844930174 cites W4205726322 @default.
- W1844930174 cites W4239144854 @default.
- W1844930174 doi "https://doi.org/10.1088/0954-0083/6/4/010" @default.
- W1844930174 hasPublicationYear "1994" @default.
- W1844930174 type Work @default.
- W1844930174 sameAs 1844930174 @default.
- W1844930174 citedByCount "24" @default.
- W1844930174 countsByYear W18449301742012 @default.
- W1844930174 countsByYear W18449301742013 @default.
- W1844930174 countsByYear W18449301742014 @default.
- W1844930174 countsByYear W18449301742018 @default.
- W1844930174 countsByYear W18449301742020 @default.
- W1844930174 countsByYear W18449301742021 @default.
- W1844930174 crossrefType "journal-article" @default.
- W1844930174 hasAuthorship W1844930174A5020415084 @default.
- W1844930174 hasAuthorship W1844930174A5039499896 @default.
- W1844930174 hasAuthorship W1844930174A5063117066 @default.
- W1844930174 hasConcept C122865956 @default.
- W1844930174 hasConcept C127413603 @default.
- W1844930174 hasConcept C132976073 @default.
- W1844930174 hasConcept C15920480 @default.
- W1844930174 hasConcept C159985019 @default.
- W1844930174 hasConcept C171359207 @default.
- W1844930174 hasConcept C178790620 @default.
- W1844930174 hasConcept C185592680 @default.
- W1844930174 hasConcept C188027245 @default.
- W1844930174 hasConcept C192562407 @default.
- W1844930174 hasConcept C2776026683 @default.
- W1844930174 hasConcept C2778093655 @default.
- W1844930174 hasConcept C2778258611 @default.
- W1844930174 hasConcept C2779227376 @default.
- W1844930174 hasConcept C2780471494 @default.
- W1844930174 hasConcept C2780642029 @default.
- W1844930174 hasConcept C2780871995 @default.
- W1844930174 hasConcept C2780965675 @default.
- W1844930174 hasConcept C42360764 @default.
- W1844930174 hasConcept C521977710 @default.
- W1844930174 hasConcept C59061564 @default.
- W1844930174 hasConcept C60100273 @default.
- W1844930174 hasConceptScore W1844930174C122865956 @default.
- W1844930174 hasConceptScore W1844930174C127413603 @default.
- W1844930174 hasConceptScore W1844930174C132976073 @default.
- W1844930174 hasConceptScore W1844930174C15920480 @default.
- W1844930174 hasConceptScore W1844930174C159985019 @default.
- W1844930174 hasConceptScore W1844930174C171359207 @default.
- W1844930174 hasConceptScore W1844930174C178790620 @default.
- W1844930174 hasConceptScore W1844930174C185592680 @default.
- W1844930174 hasConceptScore W1844930174C188027245 @default.
- W1844930174 hasConceptScore W1844930174C192562407 @default.
- W1844930174 hasConceptScore W1844930174C2776026683 @default.
- W1844930174 hasConceptScore W1844930174C2778093655 @default.
- W1844930174 hasConceptScore W1844930174C2778258611 @default.
- W1844930174 hasConceptScore W1844930174C2779227376 @default.
- W1844930174 hasConceptScore W1844930174C2780471494 @default.
- W1844930174 hasConceptScore W1844930174C2780642029 @default.
- W1844930174 hasConceptScore W1844930174C2780871995 @default.
- W1844930174 hasConceptScore W1844930174C2780965675 @default.
- W1844930174 hasConceptScore W1844930174C42360764 @default.
- W1844930174 hasConceptScore W1844930174C521977710 @default.
- W1844930174 hasConceptScore W1844930174C59061564 @default.
- W1844930174 hasConceptScore W1844930174C60100273 @default.
- W1844930174 hasIssue "4" @default.
- W1844930174 hasLocation W18449301741 @default.
- W1844930174 hasOpenAccess W1844930174 @default.
- W1844930174 hasPrimaryLocation W18449301741 @default.
- W1844930174 hasRelatedWork W1844930174 @default.
- W1844930174 hasRelatedWork W2001099679 @default.
- W1844930174 hasRelatedWork W2030458957 @default.
- W1844930174 hasRelatedWork W2040513760 @default.
- W1844930174 hasRelatedWork W2046615049 @default.
- W1844930174 hasRelatedWork W2050524159 @default.
- W1844930174 hasRelatedWork W2066357674 @default.
- W1844930174 hasRelatedWork W2089122474 @default.
- W1844930174 hasRelatedWork W2103498879 @default.
- W1844930174 hasRelatedWork W2341012299 @default.
- W1844930174 hasVolume "6" @default.
- W1844930174 isParatext "false" @default.
- W1844930174 isRetracted "false" @default.
- W1844930174 magId "1844930174" @default.
- W1844930174 workType "article" @default.