ORALS

SESSION: SISAMMonPM1-R5 Current Intelligent Sustainable Advanced Materials like Graphene, CNTs, High Entropy Alloys	Zehetbauer International Symposium on Science of Intelligent and Sustainable Advanced Materials (4th Intl. Symp. on Science of Intelligent and Sustainable Advanced Materials (SISAM))
Mon Nov, 5 2018 / Room: Copacabana A (150/1st)
Session Chairs: Yuntian Zhu; Session Monitor: TBA

14:50: [SISAMMonPM107] Keynote
Dislocation Mediated Plasticity During the Deformation of Semicrystalline Polymers
Florian Spieckermann¹ ; Harald Wilhelm² ; Gerald Polt³ ; Mohammad Zareghomsheh³ ; Michael J. Zehetbauer⁴ ; ¹University of Leoben, Leoben, Austria; ²Vienna University of Technology and Plastics Technology Institute LKT-TGM, Wien, Austria; ³University of Vienna, 1090, Austria; ⁴University of Vienna, Wien, Austria;
Paper Id: 132 [Abstract]

Although semicrystalline polymers have become increasingly important for technological applications in the past decades, the micromechanical processes on an atomistic scale occurring during plastic deformation are still a matter of dispute [1]. As an example, this concerns the question whether dislocations in the crystalline phase play a role for the macroscopic strength or not [2]. Based on dedicated experimental methods such Multiple X-ray Line Profile Analysis (MXPA), which allows the verification of the presence of dislocations and their quantification [3-6], and nano-creep experiments, as a mechanical probe for dislocation mediated plasticity with sub-nanometer resolution [7], we discuss recent findings on the molecular processes governing the plasticity of semicrystalline polymers. Special emphasis is given to the generation, mobility, and thermal activation of dislocations in particular, and crystallographic defects and transformations in general for several semicrystalline polymer materials.

References:
[1] Spieckermann, F.; Polt, G.; Wilhelm, H.; Kerber, M.; Schafler, E. & Zehetbauer, M.
Journal of Applied Polymer Science, 2012, 125, 4150-4154
[2] Spieckermann, F.; Wilhelm, H.; Polt, G.; Ahzi, S. & Zehetbauer, M., Polymer, 2014, 55, 1217-1222
Spieckermann, F.; Wilhelm, H.; Kerber, M.; Schafler, E.; Polt, G.; Bernstorff, S.; Addiego, F. & Zehetbauer, M., Polymer, 2010, 51, 4195-4199
[3] Spieckermann, F.; Polt, G.; Wilhelm, H.; Kerber, M. B.; Schafler, E.; Reinecker, M.; Soprunyuk, V.; Bernstorff, S. & Zehetbauer, M., Macromolecules, 2017, 50, 6362-6368
[4] Polt, G.; Spieckermann, F.; Wilhelm, H.; Fischer, C.; Schafler, E.; Bernstorff, S. & Zehetbauer, M., Express Polymer Letters, 2015, 9, 894-900
[5] Polt, G.; Spieckermann, F.; Wilhelm, H.; Kerber, M.; Schafler, E.; Bernstorff, S. & Zehetbauer, M., Mechanics of Materials, 2013, 67, 126-132
[6] Zare Ghomsheh, M.; Spieckermann, F.; Polt, G.; Wilhelm, H. & Zehetbauer, M., Polymer International, 2015, 64, 1537-1543