Results 21 to 30 of about 74,034 (301)

Improvement of mechanical properties of elastic materials by chemical methods

open access: yesScience and Technology of Advanced Materials, 2020
Elastomers such as gels and rubbers play various roles in our lives. Elastomers, which guarantee the safety of airplanes and automobiles and the stability of buildings, are materials that have made the lives of people in the twentieth century extremely ...
Yukikazu Takeoka, Sizhe Liu, Fumio Asai
doaj   +1 more source

Mechanical switching of ferro-electric rubber [PDF]

open access: yes, 2008
At the A to C transition, smectic elastomers have recently been observed to undergo $\sim$35% spontaneous shear strains. We first explicitly describe how strains of up to twice this value could be mechanically or electrically induced in Sm-$C$ elastomers
Adams, J. M., Warner, M.
core   +2 more sources

Measurement of the accuracy of dental working casts using a coordinate measuring machine [PDF]

open access: yesVojnosanitetski Pregled, 2016
Background/Aim: Dental impressions present a negative imprint of intraoral tissues of a patient which is, by pouring in gypsum, transferred extraorally on the working cast.
Potran Michal   +5 more
doaj   +1 more source

Dynamics of smectic elastomers [PDF]

open access: yes, 2006
We study the low-frequency, long-wavelength dynamics of liquid crystal elastomers, crosslinked in the smectic-$A$ phase, in their smectic-$A$, biaxial smectic and smectic-$C$ phases. Two different yet related formulations are employed.
Lubensky, T. C., Stenull, Olaf
core   +3 more sources

Hydrogen bonded supramolecular elastomers : correlating hydrogen bonding strength with morphology and rheology [PDF]

open access: yes, 2010
A series of six low molecular weight elastomers with hydrogen bonding end-groups have been designed, synthesised and studied. The poly(urethane) based elastomers all contained essentially the same hard block content (ca.
Greenland, Barnaby William   +6 more
core   +1 more source

Durability Variation Among Medical Gloves Made from Existing and New Elastomers Poses a Risk to Public Health

open access: yesGlobal Challenges, 2023
Despite being an essential line of defense in preventing the spread of diseases, medical glove durability is neither measured routinely nor has standard specifications.
Ashley Herkins, Katrina Cornish
doaj   +1 more source

Innovative Elastomers with Antimicrobial Activity May Decrease Infection Risks during Milking

open access: yesPathogens, 2023
Contagious pathogens are very costly to dairy herds, and they may have zoonotic and reverse-zoonotic potentials and may contribute to the spread of antimicrobial resistance. One of the most important risk factors for spreading these infections is milking,
Gabriele Meroni   +5 more
doaj   +1 more source

Phase chirality and stereo-selective swelling of cholesteric elastomers [PDF]

open access: yes, 2003
Cholesteric elastomers possess a macroscopic ``phase chirality'' as the director n rotates in a helical fashion along an optical axis $z$ and can be described by a chiral order parameter.
A. R. Tajbakhsh   +18 more
core   +1 more source

The Future of Swelling Elastomers: An Elastomer Manufacturer's View of Swelling Elastomer Developments and Market Trends

open access: yesThe Journal of Engineering Research, 2013
Swelling elastomers have gained acceptance as very effective products for creating sealing in various industries, including those creating energy from fossil fuels and geothermal resources.
R Seyger, S Resink, H Harms, R Hibberd
doaj   +1 more source

Director dynamics in liquid-crystal physical gels [PDF]

open access: yes, 2007
Nematic liquid-crystal (LC) elastomers and gels have a rubbery polymer network coupled to the nematic director. While LC elastomers show a single, non-hydrodynamic relaxation mode, dynamic light-scattering studies of self-assembled liquid-crystal gels ...
Kornfield, Julia A.   +4 more
core   +2 more sources

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