Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023796676> ?p ?o ?g. }
- W2023796676 endingPage "4774" @default.
- W2023796676 startingPage "4768" @default.
- W2023796676 abstract "High cis-1,4 polyisoprene with narrow molecular weight distribution has been prepared via coordinative chain transfer polymerization (CCTP) using a homogeneous rare earth catalyst composed of neodymium versatate (Nd(vers)3), dimethyldichlorosilane (Me2SiCl2), and diisobutylaluminum hydride (Al(i-Bu)2H) which has strong chain transfer affinity is used as both cocatalyst and chain transfer agent (CTA). Differentiating from the typical chain shuttling polymerization where dual-catalysts/CSA system has been used, one catalyst/CTA system is used in this work, and the growing chain swapping between the identical active sites leads to the formation of high cis-1,4 polyisoprene with narrowly distributed molecular weight. Sequential polymerization proves that irreversible chain termination reactions are negligible. Much smaller molecular weight of polymer obtained than that of stoichiometrically calculated illuminates that, differentiating from the typical living polymerization, several polymer chains can be produced by one neodymium atom. The effectiveness of Al(i-Bu)2H as a CTA is further testified by much broad molecular weight distribution of polymer when triisobutylaluminum (Al(i-Bu)3), a much weaker chain transfer agent, is used as cocatalyst instead of Al(i-Bu)2H. Finally, CCTP polymerization mechanism is validated by continuously decreased Mw/Mn value of polymer when increasing concentration of Al(i-Bu)2H extra added in the Nd(ver)3/Me2SiCl2/Al(i-Bu)3 catalyst system. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010" @default.
- W2023796676 created "2016-06-24" @default.
- W2023796676 creator A5032739171 @default.
- W2023796676 creator A5046763825 @default.
- W2023796676 creator A5050978749 @default.
- W2023796676 creator A5056974103 @default.
- W2023796676 creator A5078118025 @default.
- W2023796676 creator A5088588839 @default.
- W2023796676 date "2010-09-07" @default.
- W2023796676 modified "2023-09-27" @default.
- W2023796676 title "Preparation of high cis-1,4 polyisoprene with narrow molecular weight distribution via coordinative chain transfer polymerization" @default.
- W2023796676 cites W155810552 @default.
- W2023796676 cites W1614960225 @default.
- W2023796676 cites W1671318996 @default.
- W2023796676 cites W1964651302 @default.
- W2023796676 cites W1970681178 @default.
- W2023796676 cites W1993355692 @default.
- W2023796676 cites W2002452940 @default.
- W2023796676 cites W2004078391 @default.
- W2023796676 cites W2014205733 @default.
- W2023796676 cites W2024529968 @default.
- W2023796676 cites W2035087153 @default.
- W2023796676 cites W2038224968 @default.
- W2023796676 cites W2038535647 @default.
- W2023796676 cites W2038682263 @default.
- W2023796676 cites W2039450143 @default.
- W2023796676 cites W2041535146 @default.
- W2023796676 cites W2044456366 @default.
- W2023796676 cites W2048611587 @default.
- W2023796676 cites W2050694123 @default.
- W2023796676 cites W2053482239 @default.
- W2023796676 cites W2054537875 @default.
- W2023796676 cites W2056726822 @default.
- W2023796676 cites W2058082438 @default.
- W2023796676 cites W2065498479 @default.
- W2023796676 cites W2066122895 @default.
- W2023796676 cites W2071635280 @default.
- W2023796676 cites W2074554162 @default.
- W2023796676 cites W2075109211 @default.
- W2023796676 cites W2075997181 @default.
- W2023796676 cites W2082238753 @default.
- W2023796676 cites W2083864614 @default.
- W2023796676 cites W2085458107 @default.
- W2023796676 cites W2093945029 @default.
- W2023796676 cites W2093949574 @default.
- W2023796676 cites W2104767012 @default.
- W2023796676 cites W2105475848 @default.
- W2023796676 cites W2148152686 @default.
- W2023796676 cites W2150990206 @default.
- W2023796676 doi "https://doi.org/10.1002/pola.24268" @default.
- W2023796676 hasPublicationYear "2010" @default.
- W2023796676 type Work @default.
- W2023796676 sameAs 2023796676 @default.
- W2023796676 citedByCount "56" @default.
- W2023796676 countsByYear W20237966762012 @default.
- W2023796676 countsByYear W20237966762013 @default.
- W2023796676 countsByYear W20237966762014 @default.
- W2023796676 countsByYear W20237966762015 @default.
- W2023796676 countsByYear W20237966762016 @default.
- W2023796676 countsByYear W20237966762017 @default.
- W2023796676 countsByYear W20237966762018 @default.
- W2023796676 countsByYear W20237966762019 @default.
- W2023796676 countsByYear W20237966762020 @default.
- W2023796676 countsByYear W20237966762021 @default.
- W2023796676 countsByYear W20237966762022 @default.
- W2023796676 countsByYear W20237966762023 @default.
- W2023796676 crossrefType "journal-article" @default.
- W2023796676 hasAuthorship W2023796676A5032739171 @default.
- W2023796676 hasAuthorship W2023796676A5046763825 @default.
- W2023796676 hasAuthorship W2023796676A5050978749 @default.
- W2023796676 hasAuthorship W2023796676A5056974103 @default.
- W2023796676 hasAuthorship W2023796676A5078118025 @default.
- W2023796676 hasAuthorship W2023796676A5088588839 @default.
- W2023796676 hasConcept C111998727 @default.
- W2023796676 hasConcept C121120078 @default.
- W2023796676 hasConcept C121332964 @default.
- W2023796676 hasConcept C1276947 @default.
- W2023796676 hasConcept C158117686 @default.
- W2023796676 hasConcept C178790620 @default.
- W2023796676 hasConcept C185592680 @default.
- W2023796676 hasConcept C188027245 @default.
- W2023796676 hasConcept C199185054 @default.
- W2023796676 hasConcept C44228677 @default.
- W2023796676 hasConcept C48396125 @default.
- W2023796676 hasConcept C521977710 @default.
- W2023796676 hasConceptScore W2023796676C111998727 @default.
- W2023796676 hasConceptScore W2023796676C121120078 @default.
- W2023796676 hasConceptScore W2023796676C121332964 @default.
- W2023796676 hasConceptScore W2023796676C1276947 @default.
- W2023796676 hasConceptScore W2023796676C158117686 @default.
- W2023796676 hasConceptScore W2023796676C178790620 @default.
- W2023796676 hasConceptScore W2023796676C185592680 @default.
- W2023796676 hasConceptScore W2023796676C188027245 @default.
- W2023796676 hasConceptScore W2023796676C199185054 @default.
- W2023796676 hasConceptScore W2023796676C44228677 @default.
- W2023796676 hasConceptScore W2023796676C48396125 @default.
- W2023796676 hasConceptScore W2023796676C521977710 @default.
- W2023796676 hasIssue "21" @default.