Peculiarities of rheological behavior of filled polymer melts in uniaxial stretching

Dreval, V. E.; Borisenkova, E. K.

doi:10.1007/bf00435080

Cited by 16 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li and Masuda found that the strain-hardening of CaCO3-filled PS is weaker than that Of PS [ 13] . Dreval and Borisenkova reported the similar tendency [12] . We have also found that the addition of whiskers prevents strong strain-hardening property [14,15].…”

Section: Introductionmentioning

confidence: 58%

See 1 more Smart Citation

Strain-hardening Property and Internal Deformation of Polymer Composite Melts under Uniaxial Elongation.

et al. 1998

View full text Add to dashboard Cite

Uniaxial elongational viscosity of low density polyethylene (LDPE) gave the strain-hardening property. However, talc-filled LDPE showed almost no strain-hardening property and glass-fiber-filled LDPE exhibited the strain-softening property. The cause of almost no strain-hardening property or strain-softening property was discussed from flow observation of internal deformation using visual model experiments. Silicone gums including a glass bead or a glass fiber with a black silicone gum marker were elongated. The internal strain in a glass-bead-filled system was larger than the external strain along the elongational axis, and the received internal strain was larger around a particle than far way from a particle. The internal strain in a glass-fiber-filled system did not depend on the location when the initial orientation of the fiber was perpendicular to the elongational direction. While, the received internal strain next to the fiber without the both edges was almost none when the initial fiber was parallel to the elongational direction. Nonuniformities of internal flow by the addition of fillers seem to be associated with no strain-hardening property or strain-softening property.

show abstract

Section: Introductionmentioning

confidence: 58%

“…Afew former studies on the elongational viscosity of polymer composite melts were also carried out [10][11][12][13][14][15]. Around 1980 , White and his group reported the decrease of strain-hardening property in various PS composite melts [10,11] .…”

Section: Introductionmentioning

confidence: 99%

Strain-hardening Property and Internal Deformation of Polymer Composite Melts under Uniaxial Elongation.

et al. 1998

View full text Add to dashboard Cite

show abstract

“…Li and Masuda found that the strain-hardening of CaCO, filled PS is weaker than that of PS (1 1). Dreval and Borisenkova reported the similar tendency in various composite polymer melts (12).…”

mentioning

confidence: 68%

Uniaxial elongational viscosity of various molten polymer composites

1999

View full text Add to dashboard Cite

Uniaxial elongational viscosity of low density polyethylene (LDPE) that was filled with glass bead, glass flake, talc, or glass fiber was measured. The effect of various inorganic fillers on the strain-hardening property in elongational viscosity was investigated. The strain-hardening property of LDPE became weaker by the addition of fillers in the order of glass bead, glass flake, and talc. Glass fiber filled LDPE showed a strain-softening property. The smaller the particle and the larger the aspect ratio, the weaker the strain-hardening property. Their causes were analyzed from the two terms, i.e., the relaxation spectrum and the damping function, by Bernstein-Kearsley-Zapas (BKZ) model. By the incorporation of fillers, the relaxation modules became larger, and the damping function became stronger in the order of glass bead, glass flake, talc, and glass fiber. Recoverable strain was also measured to understand weaker strain-hardening properties. The degree of recovery became smaller by the addition of fillers. It was found that the smaller the particles and the larger the aspect ratio, the smaller the degree of recovery. It was concluded that weaker strain-hardening properties of LDPE composite than that of LDPE are caused by stronger damping function and smaller degree of recovery. IIITTRODUCTIONuring the last two decades, uniaxial elongatiod

show abstract

“…Regularly, rather high filler concentration (10-30 vol. %) is needed to provide viscoplastic behavior in the case of conventional microcomposites, [35][36][37] but a small amount (2-5% wt) of nanofiller is enough to ensure this kind of material response. 38,39 A strong shear thinning takes place in the region of high shear rates for all compositions under study.…”

Section: Steady-state Shear Flowmentioning

confidence: 99%

Morphology and rheology of composites based on anisotropic polymer matrix and different clays

Vasilyev

Makarova

Ребров

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

Structure and rheological properties of hybrids with polymer matrix and layered silicates as filler were studied. Solution containing 60% wt of hydroxypropylcellulose (HPC) in oligomeric polyethyleneglycol (PEG) was used as a matrix. The peculiarity of this study is that the matrix depending on temperature can form different phase states including liquid-crystalline (LC). So, a possibility of coexistence and superposition of different ordered structures can be realized at different temperatures. Three different fillers were used: natural Namontmorillonite (MMT) and organoclays obtained by treating MMT with surfactants varying in polarity of their molecules. Depending on the type of clay, materials with different morphology can be obtained. X-ray data showed that PEG intercalates all types of clay used whereas penetration of HPC macromolecules into clay galleries during mixing does not occur. Clay modified with more polar surfactant should be treated as the most convenient material to be intercalated by PEG. Rheological studies (included steady-state and dynamic shear properties in a wide temperature range) demonstrate that composites are viscoplastic materials and the yield stress is observed already at 5% fillers loading. The level of the yield stress depends on the phase state of the matrix being induced by the superposition of structures formed by clay particles as well as by the LC phase (if it exists). The same conclusion can be made on the base of linear oscillatory measurements because the existence of the LC phase and/or the presence of filler lead to a pseudo solid-like behavior of a system as whole.

show abstract

Peculiarities of rheological behavior of filled polymer melts in uniaxial stretching

Cited by 16 publications

References 27 publications

Strain-hardening Property and Internal Deformation of Polymer Composite Melts under Uniaxial Elongation.

Strain-hardening Property and Internal Deformation of Polymer Composite Melts under Uniaxial Elongation.

Uniaxial elongational viscosity of various molten polymer composites

Morphology and rheology of composites based on anisotropic polymer matrix and different clays

Contact Info

Product

Resources

About