Results 31 to 40 of about 3,997,963 (398)
Polymer scission in turbulent flows [PDF]
J. Fluid Mech. 912 (2021) A18, 2020 Polymers in a turbulent flow are subject to intense strain, which can cause their scission and thereby limit the experimental study and application of phenomena such as turbulent drag reduction and elastic turbulence. In this paper, we study polymer scission in homogeneous isotropic turbulence, through a combination of stochastic modelling, based on a ...
arxiv +1 more source
A novel profluorescent dinitroxide for imaging polypropylene degradation [PDF]
, 2008 Free-radical processes underpin the thermo-oxidative degradation of polyolefins. Thus, to extend the lifetime of these polymers, stabilizers are generally added during processing to scavenge the free radicals formed as the polymer degrades.
Fairfull-Smith, Kathryn E. +4 more
core +2 more sources
The strength of the polymer composite (fiberglass) with interlaminar shear
Инженерно-строительный журнал, 2016 Multilayered fiberglasses – the first almost mastered fibrous composites. Ultimate strength of an interlaminar shear is one of the key parameters necessary for calculation of constuctions made of laminated composites..
A.A. Boldyreva +3 more
doaj +1 more source
Statistical Thermodynamics of Polymer Quantum Systems [PDF]
, 2011 Polymer quantum systems are mechanical models quantized similarly as loop quantum gravity. It is actually in quantizing gravity that the polymer term holds proper as the quantum geometry excitations yield a reminiscent of a polymer material.
Chacón-Acosta, Guillermo +3 more
core +4 more sources
Environmentally Friendly Polymers and Polymer Composites [PDF]
Materials, 2020 In the last decade, continuous research advances have been observed in the field of environmentally friendly polymers and polymer composites due to the dependence of polymers on fossil fuels and the sustainability issues related to plastic wastes. This research activity has become much more intense in the food packaging industry due to the high volume ...
Rafael Balart +4 more
openaire +3 more sources
Frontiers in Plant Science, 2022 As an essential structural, metabolic and signaling element, calcium shows low remobilization from old to young tissues in plants, restricting the nutrient-use efficiency and control efficacy against mosaic virus disease.
Shuo Yan +7 more
doaj +1 more source
Influence of Solvent Quality on Conformations of Crowded Polymers [PDF]
J. Chem. Phys. 149, 124901 (2018), 2018 The structure and function of polymers in confined environments, e.g., biopolymers in the cytoplasm of a cell, are strongly affected by macromolecular crowding. To explore the influence of solvent quality on conformations of crowded polymers, we model polymers as penetrable ellipsoids, whose shape fluctuations are governed by the statistics of self ...
arxiv +1 more source
Synthesis of Polymer-Lipid Nanoparticles by Microfluidic Focusing for siRNA Delivery
Molecules, 2016 Polyethylenimine (PEI) as a cationic polymer is commonly used as a carrier for gene delivery. PEI-800 is less toxic than PEI-25K but it is also less efficient.
Yujing Li +11 more
doaj +1 more source
Semiflexible polymers under external fields confined to two dimensions [PDF]
J. Chem. Phys. 137, 244909 (2012), 2012 The non-equilibrium structural and dynamical properties of semiflexible polymers confined to two dimensions are investigated by molecular dynamics simulations. Three different scenarios are considered: The force-extension relation of tethered polymers, the relaxation of an initially stretched semiflexible polymer, and semiflexible polymers under shear ...
arxiv +1 more source
Supermacroporous Composite Cryogels in Biomedical Applications
Gels, 2019 Supermacroporous gels, called cryogels, are unique scaffolds that can be prepared by polymerization of monomer solution under sub-zero temperatures. They are widely used in many applications and have significant potential biomaterials, especially for ...
Yeşeren Saylan, Adil Denizli
doaj +1 more source