Matches in SemOpenAlex for { <https://semopenalex.org/work/W2019968588> ?p ?o ?g. }
Showing items 1 to 97 of
97
with 100 items per page.
- W2019968588 endingPage "8232" @default.
- W2019968588 startingPage "8225" @default.
- W2019968588 abstract "A novel and facile method for the synthesis of high molecular weight polyimides by low temperature solution polycondensation has been developed. This activated polycondensation method is based on the use in situ of both chloro(trimethyl)silane (CTMS) and a base such as pyridine (Py) as polycondensation promoters. The polymers here described have been prepared by direct polycondensation of 4,4‘-(hexafluoroisopropylidene)diphthalic anhydride with a series of aromatic diamines of different reactivity, to demonstrate the feasibility of this synthetic method in polycondensation reactions. The effect in polyimidation reactions of the individual or combined use of CTMS and Py has been studied. The coupled use of CTMS and Py afforded polyimides having inherent viscosities up to 1.05 dLg-1. Moreover, the formation of poly(amic acid silyl ester) took place in a shorter time than the classical reactions of dianhydrides and aromatic diamines. A quantum modeling study (DFT and semiempirical) has shown the influence of silylation on the reactivity of diamines. Also, it has permitted to study the pathways of the reaction, showing the necessity of a base to ensure that the formation of polyamic acid takes place." @default.
- W2019968588 created "2016-06-24" @default.
- W2019968588 creator A5046648779 @default.
- W2019968588 creator A5049757052 @default.
- W2019968588 creator A5059632945 @default.
- W2019968588 creator A5080463404 @default.
- W2019968588 date "2007-10-12" @default.
- W2019968588 modified "2023-09-27" @default.
- W2019968588 title "Experimental and Theoretical Study of an Improved Activated Polycondensation Method for Aromatic Polyimides" @default.
- W2019968588 cites W1593392860 @default.
- W2019968588 cites W1853243975 @default.
- W2019968588 cites W1965234019 @default.
- W2019968588 cites W1970499639 @default.
- W2019968588 cites W1971311036 @default.
- W2019968588 cites W2003817218 @default.
- W2019968588 cites W2004034943 @default.
- W2019968588 cites W2006991802 @default.
- W2019968588 cites W2017662674 @default.
- W2019968588 cites W2023271753 @default.
- W2019968588 cites W2039700041 @default.
- W2019968588 cites W2055950511 @default.
- W2019968588 cites W2061677098 @default.
- W2019968588 cites W2077973224 @default.
- W2019968588 cites W2107417032 @default.
- W2019968588 cites W2122084263 @default.
- W2019968588 cites W2143981217 @default.
- W2019968588 cites W2161843390 @default.
- W2019968588 doi "https://doi.org/10.1021/ma070842j" @default.
- W2019968588 hasPublicationYear "2007" @default.
- W2019968588 type Work @default.
- W2019968588 sameAs 2019968588 @default.
- W2019968588 citedByCount "42" @default.
- W2019968588 countsByYear W20199685882012 @default.
- W2019968588 countsByYear W20199685882014 @default.
- W2019968588 countsByYear W20199685882015 @default.
- W2019968588 countsByYear W20199685882016 @default.
- W2019968588 countsByYear W20199685882017 @default.
- W2019968588 countsByYear W20199685882018 @default.
- W2019968588 countsByYear W20199685882019 @default.
- W2019968588 countsByYear W20199685882020 @default.
- W2019968588 countsByYear W20199685882021 @default.
- W2019968588 countsByYear W20199685882022 @default.
- W2019968588 countsByYear W20199685882023 @default.
- W2019968588 crossrefType "journal-article" @default.
- W2019968588 hasAuthorship W2019968588A5046648779 @default.
- W2019968588 hasAuthorship W2019968588A5049757052 @default.
- W2019968588 hasAuthorship W2019968588A5059632945 @default.
- W2019968588 hasAuthorship W2019968588A5080463404 @default.
- W2019968588 hasConcept C142724271 @default.
- W2019968588 hasConcept C161790260 @default.
- W2019968588 hasConcept C178790620 @default.
- W2019968588 hasConcept C185592680 @default.
- W2019968588 hasConcept C188027245 @default.
- W2019968588 hasConcept C192562407 @default.
- W2019968588 hasConcept C204787440 @default.
- W2019968588 hasConcept C2776910235 @default.
- W2019968588 hasConcept C2778024649 @default.
- W2019968588 hasConcept C2779485729 @default.
- W2019968588 hasConcept C521977710 @default.
- W2019968588 hasConcept C53033327 @default.
- W2019968588 hasConcept C5304478 @default.
- W2019968588 hasConcept C71924100 @default.
- W2019968588 hasConceptScore W2019968588C142724271 @default.
- W2019968588 hasConceptScore W2019968588C161790260 @default.
- W2019968588 hasConceptScore W2019968588C178790620 @default.
- W2019968588 hasConceptScore W2019968588C185592680 @default.
- W2019968588 hasConceptScore W2019968588C188027245 @default.
- W2019968588 hasConceptScore W2019968588C192562407 @default.
- W2019968588 hasConceptScore W2019968588C204787440 @default.
- W2019968588 hasConceptScore W2019968588C2776910235 @default.
- W2019968588 hasConceptScore W2019968588C2778024649 @default.
- W2019968588 hasConceptScore W2019968588C2779485729 @default.
- W2019968588 hasConceptScore W2019968588C521977710 @default.
- W2019968588 hasConceptScore W2019968588C53033327 @default.
- W2019968588 hasConceptScore W2019968588C5304478 @default.
- W2019968588 hasConceptScore W2019968588C71924100 @default.
- W2019968588 hasIssue "23" @default.
- W2019968588 hasLocation W20199685881 @default.
- W2019968588 hasOpenAccess W2019968588 @default.
- W2019968588 hasPrimaryLocation W20199685881 @default.
- W2019968588 hasRelatedWork W1976049348 @default.
- W2019968588 hasRelatedWork W1985616937 @default.
- W2019968588 hasRelatedWork W2009794735 @default.
- W2019968588 hasRelatedWork W2019968588 @default.
- W2019968588 hasRelatedWork W2092204232 @default.
- W2019968588 hasRelatedWork W2339554149 @default.
- W2019968588 hasRelatedWork W2400762152 @default.
- W2019968588 hasRelatedWork W2403426623 @default.
- W2019968588 hasRelatedWork W2950122242 @default.
- W2019968588 hasRelatedWork W2951634820 @default.
- W2019968588 hasVolume "40" @default.
- W2019968588 isParatext "false" @default.
- W2019968588 isRetracted "false" @default.
- W2019968588 magId "2019968588" @default.
- W2019968588 workType "article" @default.