TY - JOUR
T1 - Assessing the Range of Validity of Current Tube Models through Analysis of a Comprehensive Set of Star–Linear 1,4-Polybutadiene Polymer Blends
AU - Hall, Ryan
AU - Desai, Priyanka S.
AU - Kang, Beom-Goo
AU - Huang, Qifan
AU - Lee, Sanghoon
AU - Chang, Taihyun
AU - Venerus, David C.
AU - Mays, Jimmy
AU - Ntetsikas, Konstantinos
AU - Polymeropoulos, George
AU - Hadjichristidis, Nikos
AU - Larson, Ronald G.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: R.H. and R.G.L. gratefully acknowledge the support of the National Science Foundation, under grants DMR 1403335 and
1707640. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation (NSF). N.H. gratefully acknowledges the support of the King Abdullah University of Science and Technology (KAUST).
PY - 2019/10/10
Y1 - 2019/10/10
N2 - We blend newly synthesized nearly monodisperse four-arm star 1,4-polybutadienes with various well-entangled linear polymers, confirming the conclusions in Desai et al. [ Macromolecules201649 (13)49644977] that advanced tube models, namely, the hierarchical 3.0 and branch-on-branch models [Wang, Z.; J. Rheol.201054 (2)223260], fail to predict the linear rheological data when the pure linear polymers have shorter relaxation times, but within 3–4 orders of magnitude of the star polymer. However, when the linear polymer has a longer relaxation time than the star, our new work, surprisingly, finds that non-monotonic dependence of terminal relaxation behavior on composition is both observed experimentally and captured by the models. Combined with previous data from the literature, we present results from over 50 1,4-polybutadiene star–linear blends, suitable for thorough testing of rheological models of entangled polymers.
AB - We blend newly synthesized nearly monodisperse four-arm star 1,4-polybutadienes with various well-entangled linear polymers, confirming the conclusions in Desai et al. [ Macromolecules201649 (13)49644977] that advanced tube models, namely, the hierarchical 3.0 and branch-on-branch models [Wang, Z.; J. Rheol.201054 (2)223260], fail to predict the linear rheological data when the pure linear polymers have shorter relaxation times, but within 3–4 orders of magnitude of the star polymer. However, when the linear polymer has a longer relaxation time than the star, our new work, surprisingly, finds that non-monotonic dependence of terminal relaxation behavior on composition is both observed experimentally and captured by the models. Combined with previous data from the literature, we present results from over 50 1,4-polybutadiene star–linear blends, suitable for thorough testing of rheological models of entangled polymers.
UR - http://hdl.handle.net/10754/658593
UR - https://pubs.acs.org/doi/10.1021/acs.macromol.9b00642
UR - http://www.scopus.com/inward/record.url?scp=85073170268&partnerID=8YFLogxK
U2 - 10.1021/acs.macromol.9b00642
DO - 10.1021/acs.macromol.9b00642
M3 - Article
SN - 0024-9297
VL - 52
SP - 7831
EP - 7846
JO - Macromolecules
JF - Macromolecules
IS - 20
ER -