Rheology of Polymers Near Liquid-Solid Transitions

Winter, H. Henning; Mours, Marian

doi:10.1007/3-540-68449-2_3

Cited by 665 publications

(455 citation statements)

References 136 publications

Supporting

Mentioning

424

Contrasting

Unclassified

Order By: Relevance

“…Storage ( G' ) and loss ( G'' ) moduli were followed over time as shown in Fig. 2a, and gelation time was defined as the time at the equality of the two moduli [24]. The gelation times derived from rheological measurements are in good agreement with the values determined by visual observation (Fig.…”

Section: Results and Discussion 31 Characterization Of Bulk Poly(aspsupporting

confidence: 65%

Preparation of pH-Responsive Poly(aspartic acid) Nanogels in Inverse Emulsion

Krisch

Szilágyi

2016

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

Section: Results and Discussion 31 Characterization Of Bulk Poly(aspsupporting

confidence: 65%

Preparation of pH-Responsive Poly(aspartic acid) Nanogels in Inverse Emulsion

Krisch

Szilágyi

2016

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

“…Steenbakkers and Peters (2008) reviewed a number of suspension-based models and found that the generalized self-consistent method (GSCM) developed by Christensen (1990); Christensen andLo (1979, 1986) describes accurately the rheology of crystallizing isotactic polypropylene (iPP). However, the GSCM is not applicable to the low frequency range, where gellike behavior instead of suspension-like behavior is observed (Pogodina and Winter 1998;Pogodina et al 1999a, b;Winter and Mours 1997). An extension of the GSCM, including percolation (Alberola and Mele 1996), did not solve this problem.…”

Section: Introductionmentioning

confidence: 99%

Suspension-like hardening behavior of HDPE and time-hardening superposition

et al. 2011

View full text Add to dashboard Cite

The rheology of solidifying high-density polyethylene (HDPE) is investigated. Experiments on an HDPE were performed with a novel RheoDSC device. Results agree quantitatively with simulations for a suspension of elastic spheres in a viscoelastic matrix except for very low values of space filling (<5%), indicating that the rheological behavior of the crystallizing melt in the frequency range investigated is purely suspension like. The hardening behavior of the material is characterized in two different ways; a normalized rheological function and a time-hardening superposition (THS) master curve of rheological properties. An improvement is proposed to the procedure for performing THS that was previously used in the literature. Based on this procedure, a novel method for predicting the rheological properties of crystallizing melts is presented.

show abstract

“…The higher the amount of AM, the increased the polymer chain length and the average molecular weight of polymer chain. As the molecular weight increases, the probability for a polymer chain to form entanglements with the neighboring polymer chains increases and therefore the probability of polymerization reaction increases 24,25 .…”

Section: Resultsmentioning

confidence: 99%

Chemo-Rheological Behavior of Aqueous Titanium Carbide Suspension and Evaluation of the Gelcasted Green Body Properties

2016

View full text Add to dashboard Cite

Gel-casting is an advanced colloidal processing method for fabricating ceramic green parts. In this project acrylamide-based monomers were used as a gelcasting system. The effects of tetramethylammonium hydroxide and polyethylenimine dispersants on the premix solution containing titanium carbide powder have been studied via observation of the zeta potential and rheological behavior. The effect of various parameters on the gelation time and viscosity of solution and flexural strength and the shrinkage rate of titanium carbide green body were investigated. The results presented that the order of dispersion capacity of the tetramethylammonium hydroxide dispersant was better than the polyethylenimine dispersants. The results showed that the gelation time decreased and viscosity increased with increasing the monomer content, solid loading, initiator amount and temperature. The highest bending strength (39 MPa) was obtained for the samples containing 25 wt.% monomer content and 50% solid loading.

show abstract

Rheology of Polymers Near Liquid-Solid Transitions

Cited by 665 publications

References 136 publications

Preparation of pH-Responsive Poly(aspartic acid) Nanogels in Inverse Emulsion

Preparation of pH-Responsive Poly(aspartic acid) Nanogels in Inverse Emulsion

Suspension-like hardening behavior of HDPE and time-hardening superposition

Chemo-Rheological Behavior of Aqueous Titanium Carbide Suspension and Evaluation of the Gelcasted Green Body Properties

Contact Info

Product

Resources

About