| Plasticizer effect on the dynamics of polyvinylchloride studied by dielectric spectroscopy and quasielastic neutron scattering (2006) | |||||||||||
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| THE JOURNAL CHEMICAL PHYSICS Plasticizer effect the dynamics polyvinylchloride studied dielectric spectroscopy and quasielastic neutron scattering Reiner Zorn Michael Monkenbusch and Dieter Richter Forschungszentrum lich IFF lich Germany Angel Alegr and Juan Colmenero Departamento sica Materiales Universidad del Vasco Apartado San Sebasti Spain Bela Farago Institut Laue Langevin X Grenoble France Received June accepted August published online October have studied the uence plasticization the microscopic dynamics glass forming polymer For this purpose studied polyvinylchloride PVC with and without the commercially used plasticizer dioctylphthalate DOP used dielectric spectroscopy and inelastic neutron scattering employing the neutron spin echo NSE technique For both kinds spectra the relaxation could consistently described model involving distribution individual relaxations the Kohlrausch type contrast earlier studies turned out that asymmetric distribution necessary the data the lower temperatures investigated here The shape parameters the distribution width skewness for PVC and PVC DOP turned out coincide when the characteristic relaxation times were the same This means that the plasticizer only induces relaxation Comparison NSE spectra remapping the temperature dependence the t at different scattering vectors gave the result that the slowing down the structure factor peak Qmax surprisingly small for PVC while the normal range for PVC DOP American Institute Physics DOI INTRO | |||||||||||
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