Matches in SemOpenAlex for { <https://semopenalex.org/work/W2072444300> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2072444300 endingPage "50" @default.
- W2072444300 startingPage "35" @default.
- W2072444300 abstract "The orientation of poly ( p-phenylene pyromelliteimide) (PPPI) molecules was examined by means of shearing during the gelation of poly(amic ethyl ester) (PAEE) precursor and thermal imidization. The polymerization of 1,4-phenylene diamine (PPDA) and 2,5-diethoxycarbonyl-1,4-benzenedicarbonyl chloride (DEBC), and that of N, N'-bis(trimethylsilyl)-1,4-phenylenediamine (N-silyl-PPDA) and DEBC yielded the PAEE gel during polymerization. With respect to the polymerization of PPDA and DEBC, 0.44 mol L -1 gave the highest DPn of PAEE at the gelation point, and the strong shear during gelation made the PAEE and ultimately PPPI molecular chains oriented in the planar mode. In contrast to this, the polymerization of N-silyl-PPDA and DEBC gave a higher DPn of PAEE at the gelation point than that of PPDA and DEBC. The strong shear stress applied to the PAEE gel, prepared at 0.50 mol L -1 , induced the uni-axial orientation of the molecular chains, but the relaxation of the orientation occurred gradually with time. The addition of ethyl acetate to the gel prevented the relaxation of the chain orientation and accelerated the crystallization. As a result, uni-axial orientation of the PAEE molecular chains was induced along the shear direction in the gel rather than the planar mode, and ultimately the PPPI molecular chains were well-oriented." @default.
- W2072444300 created "2016-06-24" @default.
- W2072444300 creator A5029796847 @default.
- W2072444300 creator A5039395919 @default.
- W2072444300 creator A5062033397 @default.
- W2072444300 creator A5077169108 @default.
- W2072444300 date "2005-03-01" @default.
- W2072444300 modified "2023-10-14" @default.
- W2072444300 title "Preparation of Well-oriented Poly(p-phenylene pyromelliteimide) Fiber via Shear-induced Orientation of Poly(amic ethyl ester) Precursor during Polymerization" @default.
- W2072444300 cites W1915925966 @default.
- W2072444300 cites W1971311036 @default.
- W2072444300 cites W1981392028 @default.
- W2072444300 cites W1995062017 @default.
- W2072444300 cites W1995622617 @default.
- W2072444300 cites W1997489237 @default.
- W2072444300 cites W2002697967 @default.
- W2072444300 cites W2004174325 @default.
- W2072444300 cites W2005047560 @default.
- W2072444300 cites W2016703674 @default.
- W2072444300 cites W2017662674 @default.
- W2072444300 cites W2018650334 @default.
- W2072444300 cites W2022802239 @default.
- W2072444300 cites W2028169565 @default.
- W2072444300 cites W2030525174 @default.
- W2072444300 cites W2043513970 @default.
- W2072444300 cites W2045521226 @default.
- W2072444300 cites W2046425167 @default.
- W2072444300 cites W2054359377 @default.
- W2072444300 cites W2060197962 @default.
- W2072444300 cites W2061677098 @default.
- W2072444300 cites W2067376423 @default.
- W2072444300 cites W2069957631 @default.
- W2072444300 cites W2082774767 @default.
- W2072444300 cites W2085757840 @default.
- W2072444300 cites W2098364141 @default.
- W2072444300 cites W2115153120 @default.
- W2072444300 cites W2116822278 @default.
- W2072444300 cites W4205106260 @default.
- W2072444300 cites W4233061365 @default.
- W2072444300 cites W4239144854 @default.
- W2072444300 cites W4246782771 @default.
- W2072444300 doi "https://doi.org/10.1177/0954008305044618" @default.
- W2072444300 hasPublicationYear "2005" @default.
- W2072444300 type Work @default.
- W2072444300 sameAs 2072444300 @default.
- W2072444300 citedByCount "4" @default.
- W2072444300 countsByYear W20724443002014 @default.
- W2072444300 crossrefType "journal-article" @default.
- W2072444300 hasAuthorship W2072444300A5029796847 @default.
- W2072444300 hasAuthorship W2072444300A5039395919 @default.
- W2072444300 hasAuthorship W2072444300A5062033397 @default.
- W2072444300 hasAuthorship W2072444300A5077169108 @default.
- W2072444300 hasConcept C159985019 @default.
- W2072444300 hasConcept C188027245 @default.
- W2072444300 hasConcept C192562407 @default.
- W2072444300 hasConcept C2775939985 @default.
- W2072444300 hasConcept C2776026683 @default.
- W2072444300 hasConcept C44228677 @default.
- W2072444300 hasConcept C521977710 @default.
- W2072444300 hasConceptScore W2072444300C159985019 @default.
- W2072444300 hasConceptScore W2072444300C188027245 @default.
- W2072444300 hasConceptScore W2072444300C192562407 @default.
- W2072444300 hasConceptScore W2072444300C2775939985 @default.
- W2072444300 hasConceptScore W2072444300C2776026683 @default.
- W2072444300 hasConceptScore W2072444300C44228677 @default.
- W2072444300 hasConceptScore W2072444300C521977710 @default.
- W2072444300 hasIssue "1" @default.
- W2072444300 hasLocation W20724443001 @default.
- W2072444300 hasOpenAccess W2072444300 @default.
- W2072444300 hasPrimaryLocation W20724443001 @default.
- W2072444300 hasRelatedWork W1485724625 @default.
- W2072444300 hasRelatedWork W2003482889 @default.
- W2072444300 hasRelatedWork W2005698845 @default.
- W2072444300 hasRelatedWork W2034508302 @default.
- W2072444300 hasRelatedWork W2050289951 @default.
- W2072444300 hasRelatedWork W2090419485 @default.
- W2072444300 hasRelatedWork W2103194019 @default.
- W2072444300 hasRelatedWork W2795515345 @default.
- W2072444300 hasRelatedWork W4231481078 @default.
- W2072444300 hasRelatedWork W4249509750 @default.
- W2072444300 hasVolume "17" @default.
- W2072444300 isParatext "false" @default.
- W2072444300 isRetracted "false" @default.
- W2072444300 magId "2072444300" @default.
- W2072444300 workType "article" @default.