PMID- 34641033
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230921
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 19
DP  - 2021 Sep 23
TI  - Modelling of Elongational Flow of HDPE Melts by Hierarchical Multi-Mode Molecular 
      Stress Function Model.
LID - 10.3390/polym13193217 [doi]
LID - 3217
AB  - The transient elongational data set obtained by filament-stretching rheometry of 
      four commercial high-density polyethylene (HDPE) melts with different molecular 
      characteristics was reported by Morelly and Alvarez [Rheologica Acta 59, 797-807 
      (2020)]. We use the Hierarchical Multi-mode Molecular Stress Function (HMMSF) 
      model of Narimissa and Wagner [Rheol. Acta 54, 779-791 (2015), and J. Rheology 
      60, 625-636 (2016)] for linear and long-chain branched (LCB) polymer melts to 
      analyze the extensional rheological behavior of the four HDPEs with different 
      polydispersity and long-chain branching content. Model predictions based solely 
      on the linear-viscoelastic spectrum and a single nonlinear parameter, the 
      dilution modulus GD for extensional flows reveals good agreement with 
      elongational stress growth data. The relationship of dilution modulus GD to 
      molecular characteristics (e.g., polydispersity index (PDI), long-chain branching 
      index (LCBI), disengagement time taud) of the high-density polyethylene melts are 
      presented in this paper. A new measure of the maximum strain hardening factor 
      (MSHF) is proposed, which allows separation of the effects of orientation and 
      chain stretching.
FAU - Poh, Leslie
AU  - Poh L
AD  - Department of Chemical Engineering, Technion-Israel Institute of Technology 
      (IIT), Technion City, Haifa 32 000, Israel.
AD  - Department of Chemical Engineering, Guangdong Technion-Israel Institute of 
      Technology (GTIIT), Shantou 515063, China.
FAU - Narimissa, Esmaeil
AU  - Narimissa E
AUID- ORCID: 0000-0002-5665-4412
AD  - Department of Chemical Engineering, Technion-Israel Institute of Technology 
      (IIT), Technion City, Haifa 32 000, Israel.
AD  - Department of Chemical Engineering, Guangdong Technion-Israel Institute of 
      Technology (GTIIT), Shantou 515063, China.
FAU - Wagner, Manfred H
AU  - Wagner MH
AUID- ORCID: 0000-0002-1815-7060
AD  - Polymer Engineering/Polymer Physics, Berlin Institute of Technology (TU Berlin), 
      Ernst-Reuter-Platz 1, 10587 Berlin, Germany.
LA  - eng
PT  - Journal Article
DEP - 20210923
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC8512010
OTO - NOTNLM
OT  - HMMSF model
OT  - high density polyethylene
OT  - viscoelastic flows
COIS- The authors declare no conflict of interest.
EDAT- 2021/10/14 06:00
MHDA- 2021/10/14 06:01
PMCR- 2021/09/23
CRDT- 2021/10/13 01:12
PHST- 2021/08/14 00:00 [received]
PHST- 2021/09/02 00:00 [revised]
PHST- 2021/09/08 00:00 [accepted]
PHST- 2021/10/13 01:12 [entrez]
PHST- 2021/10/14 06:00 [pubmed]
PHST- 2021/10/14 06:01 [medline]
PHST- 2021/09/23 00:00 [pmc-release]
AID - polym13193217 [pii]
AID - polymers-13-03217 [pii]
AID - 10.3390/polym13193217 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Sep 23;13(19):3217. doi: 10.3390/polym13193217.