caa a22 4500 605466637 CHVBK 20210128100308.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00397-015-0864-9 doi (NATIONALLICENCE)springer-10.1007/s00397-015-0864-9 On "modulus shift” and thermorheological complexity in polyolefins [Elektronische Daten] [Florian Stadler, Shiguo Chen, Shaojun Chen] Sparsely branched polyolefins often exhibit a thermorheological complexity, which was reported to be maskable by a modulus shift. However, the only physical background for a modulus shift is a density change, and this influence factor is only small in the relatively narrow temperature regime accessible by polyolefins. This paper deals with the question, how this modulus shift can be caused by experimental artifacts and real effects. The physical background of these two contributions to a vertical activation energy, as well as a meaningfulness of the application of a modulus shift, is found not to be given for polyolefins, when measuring only in a temperature range between 130 and 230°C. Springer-Verlag Berlin Heidelberg, 2015 Thermorheological behavior nationallicence Rheometry nationallicence Thermorheological complexity nationallicence Density compensation nationallicence Stadler Florian College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut Chen Shiguo College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut Chen Shaojun College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut Rheologica Acta Springer Berlin Heidelberg 54/8(2015-08-01), 695-704 0035-4511 54:8<695 2015 54 397 https://doi.org/10.1007/s00397-015-0864-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00397-015-0864-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stadler Florian College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut NATIONALLICENCE 700 1- Chen Shiguo College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut NATIONALLICENCE 700 1- Chen Shaojun College of Materials Science and Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China aut NATIONALLICENCE 773 0- Rheologica Acta Springer Berlin Heidelberg 54/8(2015-08-01), 695-704 0035-4511 54:8<695 2015 54 397