FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4247973432> ?p ?o ?g. }

• W4247973432 endingPage "112" @default.
• W4247973432 startingPage "104" @default.
• W4247973432 abstract "For blends of styrene−butadiene (SB) diblock copolymers in a nonentangling homopolybutadiene (hB) matrix, viscoelastic data obtained in a previous study (Watanabe, H.; Kotaka, T. Macromolecules 1983, 16, 769) were reexamined to elucidate features of relaxation of individual B blocks. The blends contained spherical micelles with S cores and B corona, and two-step relaxation composed of fast and slow processes was observed. This study mainly examined features of the fast process that were not specified in the previous study. When the neighboring micelles were entangled through their corona blocks, a nearly universal relationship was found between reduced moduli for the fast process, Gr* = [MbB/cbBRT]G*, and reduced frequencies, ωτ*, with cbB and MbB being the concentration of the B blocks in the hB matrix and B block molecular weight, respectively, and τ* being the relaxation time for the fast process. In addition, τ* was found to increase exponentially with MbB/Me, with Me being the entanglement spacing. These features of the fast process were qualitatively the same as those for relaxation of entangled star chains, strongly suggesting that the fast process corresponded to star-like relaxation (arm-retraction) of entangled B blocks being tethered on the S cores. Quantitatively, τ* for the B blocks were 3−4 orders of magnitude longer than the relaxation times of corresponding star hB chains. This difference was related to effects of the S cores that worked as an impenetrable wall and constrained the B block relaxation. For the slow relaxation process of the SB micellar blends, the relaxation times τs were compared with characteristic times for Stokes−Einstein (SE) diffusion of the micelles τSE = πRmηeffδ2/kT, with Rm and δ being the micelle radius and diffusion distance, respectively, and ηeff being an effective viscosity for micelle diffusion. For concentrated micelles being entangled through their B blocks, τs were close to τSE with δ and ηeff being taken as the micelle diameter (2Rm) and a viscosity ηfast for the fast process of the micelles (relaxation of individual B blocks). This result strongly suggested that the slow process for those entangled micelles corresponded to the SE diffusion of micelles, being in harmony with the previous assignment. However, for dilute, nonentangled micelles, τs were significantly shorter than τSE. This result suggested changes in the molecular mechanism for the slow process with the extent of entanglements between the micelles." @default.
• W4247973432 created "2022-05-12" @default.
• W4247973432 creator A5064870756 @default.
• W4247973432 creator A5065801193 @default.
• W4247973432 creator A5088049480 @default.
• W4247973432 date "1996-01-01" @default.
• W4247973432 modified "2023-09-24" @default.
• W4247973432 title "Viscoelastic Relaxation of Styrene−Butadiene Diblock Copolymer Micellar Systems. 1. Behavior in a Nonentangling, Short Polybutadiene Matrix" @default.
• W4247973432 cites W1494219764 @default.
• W4247973432 cites W1971583854 @default.
• W4247973432 cites W1985863062 @default.
• W4247973432 cites W1995567072 @default.
• W4247973432 cites W1996177903 @default.
• W4247973432 cites W1998744941 @default.
• W4247973432 cites W1998813002 @default.
• W4247973432 cites W2003499863 @default.
• W4247973432 cites W2012191004 @default.
• W4247973432 cites W2014135737 @default.
• W4247973432 cites W2015434916 @default.
• W4247973432 cites W2017835443 @default.
• W4247973432 cites W2019779058 @default.
• W4247973432 cites W2023836453 @default.
• W4247973432 cites W2025290697 @default.
• W4247973432 cites W2027168291 @default.
• W4247973432 cites W2028488887 @default.
• W4247973432 cites W2037344871 @default.
• W4247973432 cites W2038974588 @default.
• W4247973432 cites W2040528604 @default.
• W4247973432 cites W2046827059 @default.
• W4247973432 cites W2052277895 @default.
• W4247973432 cites W2053883951 @default.
• W4247973432 cites W2056248305 @default.
• W4247973432 cites W2059196739 @default.
• W4247973432 cites W2059643595 @default.
• W4247973432 cites W2061768452 @default.
• W4247973432 cites W2062270453 @default.
• W4247973432 cites W2066019414 @default.
• W4247973432 cites W2066088017 @default.
• W4247973432 cites W2067051605 @default.
• W4247973432 cites W2071820653 @default.
• W4247973432 cites W2073552286 @default.
• W4247973432 cites W2073572480 @default.
• W4247973432 cites W2077928494 @default.
• W4247973432 cites W2078861416 @default.
• W4247973432 cites W2080562161 @default.
• W4247973432 cites W2083222002 @default.
• W4247973432 cites W2089683152 @default.
• W4247973432 cites W2090971676 @default.
• W4247973432 cites W2091203411 @default.
• W4247973432 cites W2091887272 @default.
• W4247973432 cites W2093991967 @default.
• W4247973432 cites W2129134773 @default.
• W4247973432 cites W2134761895 @default.
• W4247973432 cites W2144620668 @default.
• W4247973432 cites W2172949807 @default.
• W4247973432 cites W2255836219 @default.
• W4247973432 cites W2488543152 @default.
• W4247973432 cites W4244279840 @default.
• W4247973432 cites W4244333517 @default.
• W4247973432 cites W4252591387 @default.
• W4247973432 doi "https://doi.org/10.1021/ma951249h" @default.
• W4247973432 hasPublicationYear "1996" @default.
• W4247973432 type Work @default.
• W4247973432 citedByCount "20" @default.
• W4247973432 countsByYear W42479734322012 @default.
• W4247973432 countsByYear W42479734322013 @default.
• W4247973432 countsByYear W42479734322014 @default.
• W4247973432 countsByYear W42479734322019 @default.
• W4247973432 crossrefType "journal-article" @default.
• W4247973432 hasAuthorship W4247973432A5064870756 @default.
• W4247973432 hasAuthorship W4247973432A5065801193 @default.
• W4247973432 hasAuthorship W4247973432A5088049480 @default.
• W4247973432 hasConcept C106487976 @default.
• W4247973432 hasConcept C11268172 @default.
• W4247973432 hasConcept C121040770 @default.
• W4247973432 hasConcept C121332964 @default.
• W4247973432 hasConcept C147789679 @default.
• W4247973432 hasConcept C15744967 @default.
• W4247973432 hasConcept C15920480 @default.
• W4247973432 hasConcept C159467904 @default.
• W4247973432 hasConcept C159985019 @default.
• W4247973432 hasConcept C184651966 @default.
• W4247973432 hasConcept C185592680 @default.
• W4247973432 hasConcept C186541917 @default.
• W4247973432 hasConcept C188027245 @default.
• W4247973432 hasConcept C192562407 @default.
• W4247973432 hasConcept C2776029896 @default.
• W4247973432 hasConcept C2777264938 @default.
• W4247973432 hasConcept C2777566558 @default.
• W4247973432 hasConcept C2780901341 @default.
• W4247973432 hasConcept C521977710 @default.
• W4247973432 hasConcept C62520636 @default.
• W4247973432 hasConcept C77805123 @default.
• W4247973432 hasConcept C84114770 @default.
• W4247973432 hasConcept C97355855 @default.
• W4247973432 hasConceptScore W4247973432C106487976 @default.
• W4247973432 hasConceptScore W4247973432C11268172 @default.
• W4247973432 hasConceptScore W4247973432C121040770 @default.

• next