caa a22 4500 463229487 CHVBK 20180405153237.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-0960-4 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0960-4 Microhardness of quenched and annealed isotactic polypropylene [Elektronische Daten] [Thomas Koch, Sabine Seidler, Erich Halwax, Sigrid Bernstorff] The influence of molecular weight on the microhardness of quenched and subsequently annealed isotactic PP is shown. A clear dependence of microhardness on molecular weight and annealing temperature was detected. Even in the quenched state, where it was difficult to detect morphological differences between the materials, microhardness shows differences. In all states, quenched and annealed, the lower molecular weight samples have the higher hardness values. Up to an annealing temperature of 70°C the hardness increases only slightly in all samples, above 80°C a more pronounced increase was observed. For the microhardness of the samples annealed at 140°C the ratio of the amorphous to the crystalline length is the dominating morphological parameter. Springer Science+Business Media, LLC, 2007 Koch Thomas Institute of Materials Science and Technology, Vienna University of Technology, Favoritenstraße 9-11, 1040, Vienna, Austria aut Seidler Sabine Institute of Materials Science and Technology, Vienna University of Technology, Favoritenstraße 9-11, 1040, Vienna, Austria aut Halwax Erich Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9, 1060, Vienna, Austria aut Bernstorff Sigrid Sincrotrone Trieste, Strata Statale 14, km 163.5, 34012, Basovizza, Italy aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5318-5326 0022-2461 42:14<5318 2007 42 10853 https://doi.org/10.1007/s10853-006-0960-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0960-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Koch Thomas Institute of Materials Science and Technology, Vienna University of Technology, Favoritenstraße 9-11, 1040, Vienna, Austria aut NATIONALLICENCE 700 1- Seidler Sabine Institute of Materials Science and Technology, Vienna University of Technology, Favoritenstraße 9-11, 1040, Vienna, Austria aut NATIONALLICENCE 700 1- Halwax Erich Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9, 1060, Vienna, Austria aut NATIONALLICENCE 700 1- Bernstorff Sigrid Sincrotrone Trieste, Strata Statale 14, km 163.5, 34012, Basovizza, Italy aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/14(2007-07-01), 5318-5326 0022-2461 42:14<5318 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer