caa a22 4500 463233867 CHVBK 20180405153250.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10853-006-0378-z doi (NATIONALLICENCE)springer-10.1007/s10853-006-0378-z Volume relaxation in amorphous and semicrystalline PET [Elektronische Daten] [Jiří Hadač, Petr Slobodian, Petr Sáha] Two types of polyethyleneterephthalate (PET) were investigated, one nearly amorphous and the other highly crystallized. DSC analysis and mercury-in-glass dilatometry were used to determine the effect of crystalline phase content on the thermal behavior of amorphous phase. Increasing portion of crystals caused an increase in glass transition temperature (T g) and broadening of the transition zone. Thermal expansion coefficient and specific heat decreased. The amount of rigid amorphous fraction, RAF, was calculated to be around 21-26%. Volume relaxation measurements initiated by temperature down-jump from the equilibrium above T g to several temperatures in the vicinity of T g showed considerably reduced relaxation rate for semicrystalline PET. Springer Science+Business Media, LLC, 2007 Hadač Jiří Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut Slobodian Petr Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut Sáha Petr Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/11(2007-06-01), 3724-3731 0022-2461 42:11<3724 2007 42 10853 https://doi.org/10.1007/s10853-006-0378-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0378-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hadač Jiří Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut NATIONALLICENCE 700 1- Slobodian Petr Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut NATIONALLICENCE 700 1- Sáha Petr Faculty of Technology, Polymer Centre, Tomas Bata University, T.G.M. 275, 762 72, Zlín, Czech Republic aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/11(2007-06-01), 3724-3731 0022-2461 42:11<3724 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer