Results 161 to 170 of about 2,663 (214)

MAPPING STORAGE MODULUS AND LOSS MODULUS OF POLYOLEFIN/POLYSTYRENE BLENDS WITH ATOMIC FORCE MICROSCOPY

Rubber Chemistry and Technology, 2012
ABSTRACT The storage modulus and loss modulus of blends of polypropylene/polystyrene and polyethylene/polystyrene have been mapped quantitatively with contact resonance atomic force microscopy. Contact resonance spectra were collected in Dual AC Resonance Tracking (DART) mode, in which the phase and amplitude are monitored at two discrete ...
Dalia G. Yablon, Roger Proksch, Anil Gannepalli, Andy H. Tsou   +3 more
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Magnetic-Field Sensitivity of Storage Modulus for Bimodal Magnetic Elastomers

The Journal of Physical Chemistry B, 2016
The magnetic-field dependence of the storage modulus for bimodal magnetic elastomers consisting of carbonyl iron with a diameter of 2.8 μm (magnetic) and aluminum hydroxide with a diameter of 1.4 μm (nonmagnetic) was measured, and the effect of nonmagnetic particles on the magnetic-field sensitivity of the storage modulus was investigated.
Jinta Nanpo, Kazushi Nagashima, Yasuhiro Umehara, Mika Kawai, Tetsu Mitsumata   +4 more
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Interlocked CNT networks with high damping and storage modulus

Carbon, 2015
The interlocked carbon nanotube (CNT) networks formed by floating catalyst chemical vapor deposition method is found to show greatly enhanced damping ratio (0.37-0.42) and much higher storage modulus (>11.0 GPa) compared to most of engineering damping materials and any other kinds of CNT networks and composites ever reported. Interestingly, its damping
Qianli Liu, Min Li, Yizhuo Gu, Shaokai Wang, Yongyi Zhang, Qingwen Li, Limin Gao, Zuoguang Zhang   +7 more
openaire   +1 more source

Storage Modulus Analysis of Kenaf Fibre Reinforced Epoxy Composites

Applied Mechanics and Materials, 2013
This article presents the storage modulus analysis of kenaf fibre composites that reinforced by two different epoxy matrix systems, named epoxy A and epoxy B. These epoxies are commercially available in Malaysia and been used as a polymer matrix in composite research.
Abdul Hakim Abdullah, Siti Khadijah Alias, Syazuan Abdul Latip, Syarifah Yunus   +3 more
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Weibull distribution application on temperature dependence of polyurethane storage modulus

International Journal of Materials Research, 2016
Abstract In this paper, a stiffness–temperature model based on Weibull statistics was applied to quantitatively describe changes in the storage modulus of thermoplastic polyurethane over a wide range of temperature. The variation of the storage modulus with temperature was obtained from dynamic mechanical analysis tests across transition
Ivan Kopal, Dana Bakošová, Pavel Koštial, Zora Jančíková, Jan Valíček, Marta Harničárová   +5 more
openaire   +1 more source

Effect of electric field on storage modulus of dielectric composites

Journal of Applied Polymer Science, 2020
AbstractDCs composed by dielectric particles and elastomer matrix present electric field dependent deformation. Viscoelasticity dominates their electric field response, which has to be considered in their applications. Although the influence of strain amplitude and oscillation frequency on the viscoelasticity of DCs has been investigated, the effect of
Ning Ma, Guangping Gong, Nannan Li, Bo Li, Xufeng Dong   +4 more
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Molecular weight of linear polymer from storage modulus

Journal of Macromolecular Science, Part B, 1992
Abstract In a previous work [1], using a binary blending rule, we had developed a numerical method to calculate the polymer molecular weight from the relaxation time spectrum of the terminal zone of stress relaxation modulus G(t). In this work, we separated the terminal zone of storage modulus G'(ω) from plateau modulus Gno and calculated the ...
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Anisotropy in Storage Modulus of Magnetic Gels Induced by Magnetization

Japanese Journal of Applied Physics, 2004
The effects of magnetization direction on the complex modulus of magnetic gels, which consist of magnetized barium ferrite and poly vinyl alcohol, have been investigated. The modulus after magnetization showed anisotropy depending on the geometry of magnetization and strain direction.
Tetsu Mitsumata, Akiyasu Nagata, Kazuki Sakai, Takashi Taniguchi   +3 more
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High-temperature strength and storage modulus in unidirectional hybrid composites

Composites Science and Technology, 2006
Abstract The mechanical properties of pultruded rods of unidirectional hybrid glass/carbon-epoxy composites were evaluated with respect to retention of high-temperature properties up to 250 °C. Two prototype matrices were produced using developmental epoxy formulations with glass transition temperatures (Tg) of 176 and 202 °C, respectively.
E.J. Bosze, A. Alawar, O. Bertschger, Yun-I. Tsai, S.R. Nutt   +4 more
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Artefacts of the storage modulus due to bubbles in polymeric fluids

Rheologica Acta, 2013
The occurrence of bubbles in samples to be characterised by rotational rheometry may lead to artefacts which can easily be misinterpreted. Exemplarily, a silicone resin is discussed which shows the formation of small bubbles near the interphase between the sample and the rheometer plate if the samples are not carefully dried before being installed in ...
Friedrich Wolff, Helmut Münstedt
openaire   +1 more source