Zobrazeno 1 - 10
of 448
pro vyhledávání: '"Kell Mortensen"'
Publikováno v:
Frontiers in Chemistry, Vol 9 (2021)
Ultrastructural membrane arrangements in living cells and their dynamic remodeling in response to environmental changes remain an area of active research but are also subject to large uncertainty. The use of noninvasive methods such as X-ray and neut
Externí odkaz:
https://doaj.org/article/d5d084e17f9f41ae8ddce22973b26178
Autor:
Anine L. Borger, Qian Huang, Ole Hassager, Jacob J. K. Kirkensgaard, Kristoffer Almdal, Kell Mortensen
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043119 (2020)
We study the relaxation of linear polymer molecules following fast uniaxial extension. Polystyrene melts of M_{w}=80 kg/mol are elongated at a Rouse-Weissenberg number Wi_{R}=1.5 to Hencky strain ɛ=3, where steady state is approached using a filamen
Externí odkaz:
https://doaj.org/article/a64ff1a33cda42958be2a83fe6423a5e
Autor:
Domenico Sagnelli, Kourosh Hooshmand, Gerdi Christine Kemmer, Jacob J. K. Kirkensgaard, Kell Mortensen, Concetta Valeria L. Giosafatto, Mette Holse, Kim H. Hebelstrup, Jinsong Bao, Wolfgang Stelte, Anne-Belinda Bjerre, Andreas Blennow
Publikováno v:
International Journal of Molecular Sciences, Vol 18, Iss 10, p 2075 (2017)
Bio-plastics and bio-materials are composed of natural or biomass derived polymers, offering solutions to solve immediate environmental issues. Polysaccharide-based bio-plastics represent important alternatives to conventional plastic because of thei
Externí odkaz:
https://doaj.org/article/a8cdb29ff3964480879ce2fc746b5be9
Autor:
Masahiko Annaka, Kell Mortensen
Publikováno v:
ACS macro letters. 7(12)
Cross-linked Tetronic star block copolymer gels, based on poly(ethylene oxide) and poly(propylene oxide), behave quite regular with respect to mechanical properties, but exhibits unusual absence of structural response to strain. The elastic response
Autor:
Ole Hassager, Kell Mortensen, Dimitris Vlassopoulos, Daniele Parisi, Sara Lindeblad Wingstrand, Bo Shen, Julie Kornfield
Publikováno v:
Wingstrand, S L, Shen, B, Kornfield, J A, Mortensen, K, Parisi, D, Vlassopoulos, D & Hassager, O 2017, ' Rheological Link Between Polymer Melts with a High Molecular Weight Tail and Enhanced Formation of Shish-Kebabs ', A C S Macro Letters, vol. 6, pp. 1268-1273 . https://doi.org/10.1021/acsmacrolett.7b00718
Presence of an ultra high molecular weight (UHMw) fraction in flowing polymer melts is known to facilitate formation of oriented crystalline structures significantly. The UHMw fraction manifests itself as a minor tail in the molar mass distribution a
Autor:
Kell Mortensen, Ole Hassager, Taihyun Chang, Dimitris Vlassopoulos, Ting Ge, Qian Huang, Grethe V. Jensen, Anine L. Borger, Thomas O'Connor, Gary S. Grest, Junyoung Ahn, Wendi Wang
Publikováno v:
Borger, A, Wang, W, O'Connor, T C, Ge, T, Grest, G S, Jensen, G, Ahn, J, Chang, T, Hassager, O, Mortensen, K, Vlassopoulos, D & Huang, Q 2020, ' Threading-Unthreading Transition of Linear-Ring Polymer Blends in Extensional Flow ', ACS Macro Letters, vol. 9, no. 10, pp. 1452–1457 . https://doi.org/10.1021/acsmacrolett.0c00607
ACS Macro Letters
ACS Macro Letters
Adding small amounts of ring polymers to a matrix of their linear counterparts is known to increase the zero-shear-rate viscosity because of linear-ring threading. Uniaxial extensional rheology measurements show that, unlike its pure linear and ring
Autor:
Kell Mortensen, Masahiko Annaka
Publikováno v:
ACS macro letters. 5(2)
We present a comparative structural study of 30 wt % aqueous suspensions of two related systems based on 4-arm PEO–PPO type of macromolecules (Tetronic T1307, BASF) with the PPO block near the star center. One system concerns the pristine 4-arm PEO
Autor:
Tania Kjellerup Lind, Dieter Scherer, Emelie J. Nilsson, Johan Engblom, Vitaly Kocherbitov, Tatyana Skansberger, Kell Mortensen
Publikováno v:
Nilsson, E J, Lind, T K, Scherer, D, Skansberger, T, Mortensen, K, Engblom, J & Kocherbitov, V 2020, ' Mechanisms of crystallisation in polysorbates and sorbitan esters ', CrystEngComm, vol. 22, no. 22, pp. 3840-3853 . https://doi.org/10.1039/d0ce00236d
Polysorbates (PS), commonly known as Tween (TM), are some of the most extensively used excipients and protein stabilisers in biopharmaceutical products worldwide. It is stipulated in the pharmacopoeia specifications that these ethoxylated surfactants
Autor:
Kell Mortensen, Anine L. Borger, Kristoffer Almdal, Jacob J. K. Kirkensgaard, Qian Huang, Ole Hassager
Publikováno v:
Mortensen, K, Borger, A L, Kirkensgaard, J J K, Huang, Q, Hassager, O & Almdal, K 2021, ' Small-Angle Neutron Scattering Study of the Structural Relaxation of Elongationally Oriented, Moderately Stretched Three-Arm Star Polymers ', Physical Review Letters, vol. 127, no. 17, 177801 . https://doi.org/10.1103/PhysRevLett.127.177801
Mortensen, K, Borger, A L, Kirkensgaard, J J K, Huang, Q, Hassager, O & Almdal, K 2021, ' Small-Angle Neutron Scattering Study of the Structural Relaxation of Elongationally Oriented, Moderately Stretched Three-Arm Star Polymers ', Physical Review Letters, vol. 127, no. 16, 177801 . https://doi.org/10.1103/PhysRevLett.127.177801
Mortensen, K, Borger, A L, Kirkensgaard, J J K, Huang, Q, Hassager, O & Almdal, K 2021, ' Small-Angle Neutron Scattering Study of the Structural Relaxation of Elongationally Oriented, Moderately Stretched Three-Arm Star Polymers ', Physical Review Letters, vol. 127, no. 16, 177801 . https://doi.org/10.1103/PhysRevLett.127.177801
We present structural relaxation studies of a polystyrene star polymer after cessation of high-rate extensional flow. During the steady-state flow, the scattering pattern shows two sets of independent correlations peaks, reflecting the structure of a
Autor:
Tue Hassenkam, Wim G. Bouwman, Gregory N. Smith, Erik Brok, Martin Alm, Martin Schmiele, Peter T. Thomsen, Lise Arleth, C. P. Duif, Kell Mortensen
Publikováno v:
Smith, G N, Brok, E, Schmiele, M, Mortensen, K, Bouwman, W G, Duif, C P, Hassenkam, T, Alm, M, Thomsen, P & Arleth, L 2021, ' The microscopic distribution of hydrophilic polymers in interpenetrating polymer networks (IPNs) of medical grade silicone ', Polymer, vol. 224, 123671 . https://doi.org/10.1016/j.polymer.2021.123671
Polymer 224, 123671-(2021). doi:10.1016/j.polymer.2021.123671
Polymer, 224
Polymer 224, 123671-(2021). doi:10.1016/j.polymer.2021.123671
Polymer, 224
By introducing hydrophilic polymers into silicone medical devices, highly beneficial biomedical properties can be realized. An established solution to introduce hydrophilic polymers is to form an interpenetrating polymer network (IPN) by performing t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc5bc10af0c1cfcebbf96aece23daba4
https://curis.ku.dk/ws/files/259935409/1_s2.0_S0032386121002949_main.pdf
https://curis.ku.dk/ws/files/259935409/1_s2.0_S0032386121002949_main.pdf