Results 11 to 20 of about 1,639,414 (226)

A Variational Beam Model for Failure of Cellular and Truss‐Based Architected Materials

open access: yesAdvanced Engineering Materials, EarlyView., 2023
Herein, a versatile and efficient beam modeling framework is developed to predict the nonlinear response and failure of cellular, truss‐based, and woven architected materials. It enables the exploration of their design space and the optimization of their mechanical behavior in the nonlinear regime. A variational formulation of a beam model is presented
Konstantinos Karapiperis   +3 more
wiley   +1 more source

Low-density PMMA/MAM nanocellular polymers using low MAM contents: Production and characterization [PDF]

open access: yes, 2019
Low-density nanocellular polymers are required to take advantage of the full potential of these materials as high efficient thermal insulators. However, their production is still a challenging task.
Athanassiou, Athanassia   +5 more
core   +1 more source

Gas separation membrane [PDF]

open access: yes, 2017
A method of fabricating a gas separation membrane includes providing a coextruded multilayer film that includes a first polymer layer formed of a first polymer material and a second polymer layer formed of a second polymer material, the first polymer ...
Armstrong, Shannon   +4 more
core   +1 more source

Investigation of the Uniformity of Gel Shrinkage by Imaging Tracer Particles Using X‐Ray Microtomography

open access: yesAdvanced Engineering Materials, EarlyView., 2023
A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal   +3 more
wiley   +1 more source

Membrane formation by immersion precipitation : the role of a polymeric additive [PDF]

open access: yes, 1992
In this thesis the immersion precipitation process is studied for systems in which two polymers are present.\ud In its basic form, immersion precipitation is carried out by immersing a thin film of a concentrated polymer solution into a bath of ...
Boom, Remko Marcel
core   +4 more sources

A novel profluorescent dinitroxide for imaging polypropylene degradation [PDF]

open access: yes, 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

Polymer-polymer miscibility [PDF]

open access: yesPure and Applied Chemistry, 1986
Abstract
openaire   +2 more sources

Environmentally Friendly Polymers and Polymer Composites [PDF]

open access: yesMaterials, 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

Structure and Dynamics of Solvated Polymers near a Silica Surface: On the Different Roles Played by Solvent [PDF]

open access: yes, 2018
Whereas it is experimentally known that the inclusion of nanoparticles in hydrogels can lead to a mechanical reinforcement, a detailed molecular understanding of the adhesion mechanism is still lacking.
Boutin, Anne   +3 more
core   +1 more source

Proteins and polymers [PDF]

open access: yesThe Journal of Chemical Physics, 2005
Proteins, chain molecules of amino acids, behave in ways which are similar to each other yet quite distinct from standard compact polymers. We demonstrate that the Flory theorem, derived for polymer melts, holds for compact protein native state structures and is not incompatible with the existence of structured building blocks such as α helices and β ...
BANAVAR JR, HOANG TX, MARITAN, AMOS
openaire   +5 more sources

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