Matches in SemOpenAlex for { <https://semopenalex.org/work/W2357808625> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W2357808625 abstract "Poly(isoprene b methyl methacrylate) block copolymer has been synthesized by rare earth coordination catalysts,which are composed of rare earth 2 ethyl hexyl phosphonates RE(P 204 ) 3 ,triisobutyl aluminum Al( i Bu) 3 and 1,2 dibromoethane DBE .It is found that the rare earth coordination catalysts are highly active for the block copolymerization of isoprene and methyl methacrylate.The diblock copolymer prepared has been characterized by DSC, 1H NMR and 13 C NMR.The block copolymer has two glass transition temperatures at -75 6℃ and 129℃ corresponding to the isoprene block phase and the methyl methacrylate block phase,respectively.The microstructure of the diblock copolymer is a highly stereoregular.For the isoprene scgment in the diblock copolymer it mainly exists in the form of cis 1,4 addition.The content of cis 1,4 addition is 97% and of 3,4 addition is 3%.For the methyl methacrylatc segment it is mostly syndiotactic,which is 74% syndiotacticity,4% isotacticity and 22% heterotacticity.The n (ad) probabilities of methyl methacrylate units in the block copolymer are calculated,and it is showed that the methyl methacrylate segment obeys second order Markov statistics model." @default.
- W2357808625 created "2016-06-24" @default.
- W2357808625 creator A5060082912 @default.
- W2357808625 date "1999-01-01" @default.
- W2357808625 modified "2023-09-27" @default.
- W2357808625 title "SYNTHESIS AND MICROSTRUCTURE STUDY OF ISOPRENE/METHYL METHACRYLATE BLOCK COPOLYMER BY RARE EARTH CATALYSTS" @default.
- W2357808625 hasPublicationYear "1999" @default.
- W2357808625 type Work @default.
- W2357808625 sameAs 2357808625 @default.
- W2357808625 citedByCount "0" @default.
- W2357808625 crossrefType "journal-article" @default.
- W2357808625 hasAuthorship W2357808625A5060082912 @default.
- W2357808625 hasConcept C132050475 @default.
- W2357808625 hasConcept C15920480 @default.
- W2357808625 hasConcept C159985019 @default.
- W2357808625 hasConcept C188027245 @default.
- W2357808625 hasConcept C192562407 @default.
- W2357808625 hasConcept C2777935641 @default.
- W2357808625 hasConcept C2780959689 @default.
- W2357808625 hasConcept C44228677 @default.
- W2357808625 hasConcept C521977710 @default.
- W2357808625 hasConcept C58018886 @default.
- W2357808625 hasConceptScore W2357808625C132050475 @default.
- W2357808625 hasConceptScore W2357808625C15920480 @default.
- W2357808625 hasConceptScore W2357808625C159985019 @default.
- W2357808625 hasConceptScore W2357808625C188027245 @default.
- W2357808625 hasConceptScore W2357808625C192562407 @default.
- W2357808625 hasConceptScore W2357808625C2777935641 @default.
- W2357808625 hasConceptScore W2357808625C2780959689 @default.
- W2357808625 hasConceptScore W2357808625C44228677 @default.
- W2357808625 hasConceptScore W2357808625C521977710 @default.
- W2357808625 hasConceptScore W2357808625C58018886 @default.
- W2357808625 hasLocation W23578086251 @default.
- W2357808625 hasOpenAccess W2357808625 @default.
- W2357808625 hasPrimaryLocation W23578086251 @default.
- W2357808625 hasRelatedWork W1507943273 @default.
- W2357808625 hasRelatedWork W1989143791 @default.
- W2357808625 hasRelatedWork W2007675060 @default.
- W2357808625 hasRelatedWork W2019823390 @default.
- W2357808625 hasRelatedWork W2020684195 @default.
- W2357808625 hasRelatedWork W2021534856 @default.
- W2357808625 hasRelatedWork W2062061680 @default.
- W2357808625 hasRelatedWork W2064043232 @default.
- W2357808625 hasRelatedWork W2120229865 @default.
- W2357808625 hasRelatedWork W2155120939 @default.
- W2357808625 hasRelatedWork W2155325411 @default.
- W2357808625 hasRelatedWork W2353168084 @default.
- W2357808625 hasRelatedWork W2355000927 @default.
- W2357808625 hasRelatedWork W2357509257 @default.
- W2357808625 hasRelatedWork W2369336379 @default.
- W2357808625 hasRelatedWork W2377840982 @default.
- W2357808625 hasRelatedWork W2946021902 @default.
- W2357808625 hasRelatedWork W2466045832 @default.
- W2357808625 hasRelatedWork W2493101111 @default.
- W2357808625 hasRelatedWork W2816699518 @default.
- W2357808625 isParatext "false" @default.
- W2357808625 isRetracted "false" @default.
- W2357808625 magId "2357808625" @default.
- W2357808625 workType "article" @default.