Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Helen Lentzakis"'
Publikováno v:
Journal of Rheology. 65:779-789
In this work, the effect of cellulose filaments (CFs) dispersion on the relaxation behavior of thermoplastics matrices was studied. The dispersion state of polystyrene/CF composites produced by two different processing methods, leading to two differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dca816b0f4178ff98282c55c40602ae
https://doi.org/10.1122/8.0000228
https://doi.org/10.1122/8.0000228
Autor:
Hyojoon Lee, Helen Lentzakis, Taihyun Chang, Salvatore Costanzo, Dimitris Vlassopoulos, Daniel J. Read, Evelyne Van Ruymbeke, Ralph H. Colby
Publikováno v:
Macromolecules, Vol. 52, no.8, p. 3010-3028 (2019)
We investigate the influence of the environment on the relaxation dynamics of well-defined H-polymers diluted in a matrix of linear chains. The molar mass of the linear chain matrix is systematically varied and the relaxation dynamics of the H-polyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25e196f5404d99e293bd9fe65b224208
https://eprints.whiterose.ac.uk/145676/1/H-linearBlends_Revised_Final_Revised.pdf
https://eprints.whiterose.ac.uk/145676/1/H-linearBlends_Revised_Final_Revised.pdf
Publikováno v:
Journal of Rheology. 60:1115-1120
There have been many more papers published on methods for inferring a continuous relaxation spectrum from linear viscoelastic data than have been published on the use of such methods for polymer characterization. But a continuous spectrum can reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b380bf21cd6a48e55d0781f89008e89
https://doi.org/10.1122/1.4960334
https://doi.org/10.1122/1.4960334
Autor:
Helen Lentzakis, Francesco Picchioni, Seung-Sub Lee, D. Collias, Taihyun Chang, A. D. Gotsis, Lorenzo Massimo Polgar, Claudio Toncelli, Georgios Sakellariou, Antonius Broekhuis, Dimitris Vlassopoulos, Frank Snijkers, D. A. Z. Wever
Publikováno v:
Macromolecules, 48(18), 6662-6671. AMER CHEMICAL SOC
We report on a novel synthetic route to synthesize relatively large quantities of polystyrene (PS) star polymers with targeted arm functionality and molar mass and their theological properties in the molten state. The synthetic route involves graftin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1cfffb576da8c511d054b91a1a36476
https://research.rug.nl/en/publications/e8688af4-dd4e-4ae4-9527-a10dd621beef
https://research.rug.nl/en/publications/e8688af4-dd4e-4ae4-9527-a10dd621beef
Publikováno v:
2017 IEEE 17th International Conference on Nanotechnology (IEEE-NANO).
Commercial graphene offers a much lower cost route to the production of high aspect-ratio nanoplatelet fillers than fully-exfoliated, research-grade or laboratory-made graphene sheets. We prepared polyethylene nanocomposites based on commercial graph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f09deef9cd51575dab01c06d3dfa698a
https://doi.org/10.1109/nano.2017.8117344
https://doi.org/10.1109/nano.2017.8117344
Publikováno v:
Journal of Rheology. 58:1855-1875
In analogy with the pom-pom model, we introduce a simple model for comb polymers with multiple side-arms attached to a linear backbone by considering a set of coupled equations describing the stretch in the individual interbranch backbone segments. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc1f7d2888623f698fbff55c9243ca8a
https://doi.org/10.1122/1.4895606
https://doi.org/10.1122/1.4895606
Autor:
Helen Lentzakis, Daniel Read, Dimitris Vlassopoulos, Paraskevi Driva, Nikos Hadjichristidis, Taihyun Chang, Hyojoon Lee
Publikováno v:
Journal of Rheology. 57:605-625
We present a detailed systematic investigation of the transient uniaxial extensional response of a series of well-characterized, anionically synthesized comb polystyrenes and polyisoprenes. The comb architecture consists of a linear chain backbone wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b4c30fcbbbd34cca42010ec1817fde9
https://doi.org/10.1122/1.4789443
https://doi.org/10.1122/1.4789443
Autor:
Chinmay Das, Dimitris Vlassopoulos, Petra Bačová, Helen Lentzakis, Daniel Read, Angel J. Moreno
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
Relaxation of branched polymers under tube-based models involves a parameter p2 characterizing the hop size of relaxed side arms. Depending on assumptions made in rheological models (e.g., about the relevant tube diameter for branch-point hops), p2 h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6c47c3b8c827d91c7e06bae164a0e6d
http://hdl.handle.net/10261/102688
http://hdl.handle.net/10261/102688
Publikováno v:
ASME 2007 Summer Bioengineering Conference.
Upon clinical analysis, regions such as curvatures and bifurcations have been characterized as high prone regions where atherosclerotic plaques were more likely to occur. Biological studies have linked this phenomenon to the localized response of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74ea1d8ff77cc32b592aaa4a199db270
https://doi.org/10.1115/sbc2007-172212
https://doi.org/10.1115/sbc2007-172212
Autor:
Georgios Sakellariou, Dimitris Vlassopoulos, Barry W. Fitzgerald, Helen Lentzakis, Wim J. Briels
Publikováno v:
Journal of chemical physics, 141, 114907/1-114907/11. American Institute of Physics
We present from simulations and experiments results on the linear and nonlinear rheology of a moderate functionality, low molecular weight unentangled polystyrene (PS) star melt. The PS samples were anionically synthesized and close to monodisperse w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::705fcadb7adc9771fc49373cb8b8fe8f
https://doi.org/10.1063/1.4895610
https://doi.org/10.1063/1.4895610