Automatic apparatus, based upon a nickel-tube resonator, for measuring the complex shear modulus of liquids in the kHz range

Oosterbroek, M.; Waterman, H. A.; Wiseall, S.S.; Altena, E. G.; Mellema, J.; Kip, Gerhardus A.M.

doi:10.1007/bf01524023

Cited by 25 publications

(15 citation statements)

References 8 publications

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“…A correction for this effect, which is proportional to the frequency itself, is used by Rouse et al [14] and by Oosterbroek etal. [5]. An immobilized layer of 0.2 gm can explain the differences between the two A values.…”

Section: Calibrationmentioning

confidence: 93%

“…By measuring a number of points of the resonance curve, the resonance frequency and the band-width are calculated. The data handling is the same as used by Oosterbroek et al [5]. The time needed for one measurement is about one minute.…”

Section: General Arrangement and Data Handlingmentioning

confidence: 99%

“…The dynamic moduli of the solution have been measured with the four torsion pendula and with the nickel-tube apparatus, developed in our laboratory [5].…”

Section: Measurement Of a Viscoelastic Polymer Solutionmentioning

confidence: 99%

“…Systems investigated are amongst others polymer solutions [1], microemulsions [2], ordered latices [3], blood and synovial fluids [4]. In the high-frequency range ) a number of instruments based on quartz crystal and nickel tube resonators are used [5]. In the low-frequency range (less than 10 Hz) a lot of different types of dynamic viscometers are used [1].…”

Section: Introductionmentioning

confidence: 99%

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Torsion pendula with electromagnetic drive and detection system for measuring the complex shear modulus of liquids in the frequency range 80?2500 Hz

Blom

Mellema

1984

Rheol Acta

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Abstract." An apparatus for the measurement of liquid complex shear viscosity in the frequency range 80-2500 Hz, with the use of a torsion pendulum operating in forced oscillation, is described. The drive and detection system consists of a magnet inside the pendulum, two excitation and two measuring coils. The determination of the complex shear viscosity is based on the measurement of the resonance frequency and the damping of the torsion pendulum.The feasibility of this method is demonstrated with a number of Newtonian liquids in the viscosity range 0.3 to 60 m Pa s. Results for a viscoelastic polymer solution are presented. A comparison is made with other apparatus working in the same frequency range.

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Section: Calibrationmentioning

confidence: 93%

Section: General Arrangement and Data Handlingmentioning

confidence: 99%

“…The dynamic moduli of the solution have been measured with the four torsion pendula and with the nickel-tube apparatus, developed in our laboratory [5].…”

Section: Measurement Of a Viscoelastic Polymer Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Torsion pendula with electromagnetic drive and detection system for measuring the complex shear modulus of liquids in the frequency range 80?2500 Hz

Blom

Mellema

1984

Rheol Acta

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“…Oscillatory shear measurements were carried out in the frequency range 3700-235000 Hz with a nickel tube [9,10]. This instrument essentially consists of a circularly magnetized Ni-tube which is set in torsional vibration.…”

Section: Rheological Measurementsmentioning

confidence: 99%

Viscoelasticity and microstructure of non-ionic microemulsions

Eshuis

Mellema

1984

Colloid & Polymer Sci

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Non-ionic microemulsions were investigated by viscoelastic measurements in the kHz region. We found that in some parts of the phase diagram our systems consisted of a dispersion of spherical oil doplets, stabilized by a non-ionic surfactant, in a continuous phase of almost pure water. Because of the simplicity of the system used it was relatively easy to interpret our measurements in terms of two rheological models developed by 01droyd. Using these models, we could calculate the interracial tension between the continuous and the dispersed phase. In other parts of the phase diagram, however, our results indicate the presence of a fluctuating network of oil-swollen cylindrical micelles.

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Effect of core‐shell morphology evolution on the rheology, crystallization, and mechanical properties of PA6/EPDM‐g‐MA/HDPE ternary blend

Dou

Wang

Zhou

et al. 2012

J of Applied Polymer Sci

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In this article, polyamide 6 (PA6), maleic anhydride grafted ethylene-propylene-diene monomer (EPDM-g-MA), high-density polyethylene (HDPE) were simultaneously added into an internal mixer to melt-mixing for different periods. The relationship between morphology and rheological behaviors, crystallization, mechanical properties of PA6/EPDM-g-MA/HDPE blends were studied. The phase morphology observation revealed that PA6/EPDM-g-MA/HDPE (70/15/15 wt %) blend is constituted from PA6 matrix in which is dispersed core-shell droplets of HDPE core encapsulated by EPDM-g-MA phase and indicated that the mixing time played a crucial role on the evolution of the core-shell morphology. Rheological measurement manifested that the complex viscosity and storage modulus of ternary blends were notable higher than the pure polymer blends and binary blends which ascribed different phase morphology. Moreover, the maximum notched impact strength of PA6/EPDM-g-MA/HDPE blend was 80.7 KJ/m 2 and this value was 10-11 times higher than that of pure PA6. Particularly, differential scanning calorimetry results indicated that the bulk crystallization temperature of HDPE (114.6 C) was partly weakened and a new crystallization peak appeared at a lower temperature of around 102.2 C as a result of co-crystal of HDPE and EPDM-g-MA.

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Automatic apparatus, based upon a nickel-tube resonator, for measuring the complex shear modulus of liquids in the kHz range

Cited by 25 publications

References 8 publications

Torsion pendula with electromagnetic drive and detection system for measuring the complex shear modulus of liquids in the frequency range 80?2500 Hz

Torsion pendula with electromagnetic drive and detection system for measuring the complex shear modulus of liquids in the frequency range 80?2500 Hz

Viscoelasticity and microstructure of non-ionic microemulsions

Effect of core‐shell morphology evolution on the rheology, crystallization, and mechanical properties of PA6/EPDM‐g‐MA/HDPE ternary blend

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