Application of Scattering Methods to the Dynamics of Polymer Systems
DOI: 10.1007/bfb0116458
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Static and dynamic scattering at the microphase separation transition in block copolymers

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Cited by 3 publications
(2 citation statements)
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“…There have been speculations that relate such a length scale dependence to the cooperative nature of the glass transition.17 A continuation of our measurements to lower frequencies could help to test these ideas as there are two length scales available in the polyisoprene system on which relaxational dynamics may be studied. About 20 K above Tt both normal and segmental modes display a temperature dependence which is in accordance with the WLF description C^T-TJ log vma = log vQ + C^+T_T (10) vmax = wmai/2x is the position of the maximum in <"( ), and log »o, Ci, and C2 are the WLF parameters. We use the glass transition temperature Tt = 204 K as the reference temperature.…”
Section: ¡7supporting
confidence: 78%
“…There have been speculations that relate such a length scale dependence to the cooperative nature of the glass transition.17 A continuation of our measurements to lower frequencies could help to test these ideas as there are two length scales available in the polyisoprene system on which relaxational dynamics may be studied. About 20 K above Tt both normal and segmental modes display a temperature dependence which is in accordance with the WLF description C^T-TJ log vma = log vQ + C^+T_T (10) vmax = wmai/2x is the position of the maximum in <"( ), and log »o, Ci, and C2 are the WLF parameters. We use the glass transition temperature Tt = 204 K as the reference temperature.…”
Section: ¡7supporting
confidence: 78%
“…The scattered intensity I(q) at scattering vector q is related to the correlation of concentration fluctuations S(q) /(<?) = VKS(q) (7) where V denotes the volume of a polymer chain and K is Table II. Characteristic Temperatures and the Position q* of the Maximum in S(q) (in the scattering contrast factor given as the square of the electron density difference between isoprene and styrene.…”
Section: Resultsmentioning
confidence: 99%