caa a22 4500 463192478 CHVBK 20180406164913.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10973-006-7805-x doi (NATIONALLICENCE)springer-10.1007/s10973-006-7805-x Nanofillereffect on the glass transition of a polyurethane [Elektronische Daten] [J. González-Irún Rodríguez, P. Carreira, A. García-Diez, D. Hui, R. Artiaga, L. Liz-Marzán] The effect of silica nanofiller on the glass transition of a polyurethane was studied by DSC. The pristine polymer exhibits a single glass transition at about -10°C. Uniform SiO2 spheres with different average sizes and narrow size distributions were synthesized in solution by the Stöber method [1]. Both the effects of silica content within the polymer and particle size were investigated, as well as two different surface treatments. Scanning electron microscopy (SEM) clearly confirms the presence of the particles within the polymer matrix, showing uniform distribution and no agglomeration. While shifting of the glass transition has been reported by many authors, we have not seen any noticeable shift in this polymer. Surprisingly, we found no relevant effects when either increasing the filler content or changing the particle size. Different amounts of particles with average diameters of 175, 395 and 730 nm did not affect the glass transition temperature of the pristine polymer. Springer-Verlag, 2007 DSC nationallicence glass transition temperature nationallicence nanocomposite nationallicence nanoparticle nationallicence González-Irún Rodríguez J. Departamento de Química Física, Facultad de Ciencias, Universidade de Vigo, 36310, Vigo, Spain aut Carreira P. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut García-Diez A. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut Hui D. Department of Mechanical Engineering, University of New Orleans, 70148, New Orleans, USA aut Artiaga R. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut Liz-Marzán L. Departamento de Química Física, Facultad de Ciencias, Universidade de Vigo, 36310, Vigo, Spain aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 45-47 1388-6150 87:1<45 2007 87 10973 https://doi.org/10.1007/s10973-006-7805-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7805-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- González-Irún Rodríguez J. Departamento de Química Física, Facultad de Ciencias, Universidade de Vigo, 36310, Vigo, Spain aut NATIONALLICENCE 700 1- Carreira P. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut NATIONALLICENCE 700 1- García-Diez A. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut NATIONALLICENCE 700 1- Hui D. Department of Mechanical Engineering, University of New Orleans, 70148, New Orleans, USA aut NATIONALLICENCE 700 1- Artiaga R. Departamento of Industrial Engineering II, Escola Politécnica Superior, Universidade da Coruña, 15403, Ferrol, Spain aut NATIONALLICENCE 700 1- Liz-Marzán L. Departamento de Química Física, Facultad de Ciencias, Universidade de Vigo, 36310, Vigo, Spain aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 45-47 1388-6150 87:1<45 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer