Results 41 to 50 of about 4,085,209 (263)

Onset of entanglement

, 1998
We have developed a theory of polymer entanglement using an extended Cahn-Hilliard functional, with two extra terms. One is a nonlocal attractive term, operating over mesoscales, which is interpreted as giving rise to entanglement, and the other a local ...
C. Carraro, C.G. Moore, C.N. Yang, F.H. Stillinger, H.B. Callen, H.J. Raveché, J.G. Kirkwood, J.J. Binney, J.W. Cahn, K. Broderix, K. Koniaris, K. Kroy, M. Doi, M. Doi, M.G. Brereton, N. Triantafyllidis, P. Ramond, P. Stepanek, P.G. de Gennes, P.J. Flory, R.T. Deam, S. Onogi, S. Prager, S.M. Chitanvis, Shirish M. Chitanvis, T. Holtzl, T.A. Kassalis, Y. Termonia, Y. Termonia   +28 more
core   +1 more source

Master curves for the sulphur assisted crosslinking reaction of natural rubber in the presence of nano- and nano-structured sp2 carbon allotropes [PDF]

, 2017
In this paper, master curves are reported for the crosslinking of a diene rubber with a sulphur based system in the presence of either nano- or nano-structured carbon allotropes, such as carbon nanotubes (CNT), a nanosized graphite with high surface area
Barbera, Vincenzina, Cipolletti, VALERIA ROSARIA, Citterio, Attilio, Galimberti, MAURIZIO STEFANO, Musto, Sara   +4 more
core   +2 more sources

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Critical Dynamics of Gelation

, 2000
Shear relaxation and dynamic density fluctuations are studied within a Rouse model, generalized to include the effects of permanent random crosslinks.
A. B. Harris, A. Bunde, A. Cavagna, A. E. Albert, A. J. Bray, A. Meir, Annette Zippelius, B. Bollobás, B. Bollobás, D. Adolf, D. B. Gingold, D. J. Klein, D. Stauffer, D. Stauffer, E. R. Hansen, G. Biroli, G. J. Rodgers, Henning Löwe, I. S. Gradshteyn, J. E. Martin, J. E. Martin, J. E. Martin, J. E. Martin, J. P. Straley, K. Broderix, K. Broderix, K. Vollmayr, Kurt Broderix, L. Schäfer, M. Adam, M. Adam, M. Doi, M. E. Cates, M. J. Stephen, M. P. Solf, M. Rubinstein, O. Stenull, P. Erdős, P. J. Flory, P. J. Flory, P. J. Flory, P. J. Flory, P. M. Goldbart, P.-G. de Gennes, P.-G. de Gennes, P.-G. de Gennes, Peter Müller, R. H. Colby, R. M. Corless, S. T. Milner, T. C. Lubensky, W. H. Stockmayer, W. H. Stockmayer, W. Peng   +53 more
core   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

Ambient Stable Triboelectric Nanogenerator Based on Conductive Filler Modified Silicone Rubber with Gas Barrier Encapsulation for Footstep Energy Conversion

Advanced Science, EarlyView.
A humidity‐tolerant triboelectric nanogenerator is developed using conductive carbon black‐modified silicone rubber and a flame‐retardant gas barrier layer. The device efficiently harvests footstep energy while maintaining stable output under 30–90% RH and over 1 million cycles.
Yi Wei, Yushu Tian, Xiaokang Chen, Junfeng Chu, Junjie Wang, Xiangyu Chen, Wenjie Wu, Liqun Zhang   +7 more
wiley   +1 more source

Large‐Scale In Situ Formation Perovskite Quantum Dots/Elastomer Composite for High‐Performance White Light‐Emitting Diodes

Advanced Science, EarlyView.
A solvent‐free, open‐mill shear protocol nucleates 2.6 nm CsPbBr3 QDs uniformly within brominated butyl rubber. The emitters showed 91% PLQY, 1189 ns lifetime, and > 90% retention after 30‐day ambient storage and water immersion, respectively. Board‐to‐board forms 17 × 17 cm2 flexible films for 132% NTSC white LEDs, scintillators, and stretchable ...
Yuxian Su, Shirong Yu, Hao Shen, Dongdong Kang, Beibei Wang, Xuebin Yu, Yongyin Kang   +6 more
wiley   +1 more source

Reprogrammable Hydroplastic Latex Films and Water‐Driven Phase Separation

Advanced Science, EarlyView.
Hydroplastic latex films with discontinuous hydrophobic phases surrounded by continuous hydrophilic phases, are prepared. Upon immersion in water, the latex films have water‐driven phase separation. ABSTRACT Thermoplastics are a class of plastic polymers that can be remolded repeatedly by heating and cooling.
Yuwei Du, Hanying Zhao
wiley   +1 more source

Electrochemical Nitrate Reduction Reaction to Ammonia at Industrial‐Level Current Densities

Advanced Science, EarlyView.
This review starts from the mechanism and theoretical basis of electrochemical nitrate reduction reaction (NO3−RR), and systematically summarizes and discusses the design strategies of industrial‐level current density catalysts. In addition, the progress of industrial‐level NO3−RR‐based electrolyzers, including flow reactor and membrane electrode ...
Zhijie Cui, Honghai Wang, Chunli Li, Wenchao Peng, Jiapeng Liu   +4 more
wiley   +1 more source

Návrh konceptu univerzálního montážního stroje s využitím koncepce Industry 4.0 [PDF]

, 2018
The aim of the thesis is to present the concept of the assembly device, which is based on the equipment already implemented. The concept involves deploying collaborative robots to increase the efficiency of the assembly cycle.
Kebo, Vladimír, Kristel, Peter
core   +1 more source