A synergistic analysis of drag reduction on binary polymer mixtures containing guar gum.

08:00 EDT 9th July 2019 | BioPortfolio

Summary of "A synergistic analysis of drag reduction on binary polymer mixtures containing guar gum."

Drag reduction by the addition of polymer additives has been widely studied. However, there are only a few studies on binary polymer mixtures, here named blends. In this work, xanthan gum, polyacrylamide and poly(ethylene oxide) were associated with guar gum and drag reduction was used as a parameter to determine the synergistic interaction between polymers. The aim was to verify the relation of the synergy with the rigidity of the polymeric chains, the molecular weights and the magnitude of the molecular interactions between the studied polymers. To that end, several ratios of mixtures were tested at different Reynolds numbers in a rotational rheometer with double-gap concentric cylinders geometry. Finally, experiments were done to verify the behaviour of the blends over time at a fixed Reynolds number. From all these tests, it was documented that blends containing rigid chain polymers show positive synergism in the interaction in at least one of the ratios and that this interaction is more pronounced when the molecular weights are closer and intermolecular forces are stronger. It was also noted that, in general, blends are great substitutes for solutions containing only one type of polymer.


Journal Details

This article was published in the following journal.

Name: International journal of biological macromolecules
ISSN: 1879-0003


DeepDyve research library

PubMed Articles [20880 Associated PubMed Articles listed on BioPortfolio]

Thermal and spectroscopic analyses of guar gum degradation submitted to turbulent flow.

In this paper, a 400 ppm aqueous solution of guar gum polysaccharide was submitted to a turbulent flow regime in order to monitor molecular degradation and drag reduction. Guar gum samples were isol...

In vitro and in silico modeling of perfluoroalkyl substances mixture toxicity in an amphibian fibroblast cell line.

Poly and perfluoroalkyl substances (PFAS) are a large group of emerging organic pollutants that can persist in the environment and bioaccumulate in biota. They are found in complex mixtures, and altho...

Prediction of drug-polymer interactions in binary mixtures using energy balance supported by inverse gas chromatography.

Surface energy is extensively adopted to predict the surface properties of materials nowadays. Our study was aimed at utilizing the surface free energy measured by inverse gas chromatography to determ...

New QSPR Models to Predict the Flammability of Binary Liquid Mixtures.

New Quantitative Structure-Property Relationships (QSPR) are presented to predict the flash point of binary liquid mixtures, based on more than 600 experimental flash points for 60 binary mixtures. Tw...

A novel computational solution to the health risk assessment of air pollution via joint toxicity prediction: A case study on selected PAH binary mixtures in particulate matters.

Regional haze episode has already caused overwhelming public concern. Unraveling the health effects of the representative composition mixtures of atmospheric fine particulate matters (PM) becomes a to...

Clinical Trials [5043 Associated Clinical Trials listed on BioPortfolio]

Bioresorbable Polymer ORSIRO Versus Durable Polymer RESOLUTE ONYX Stents

The introduction of drug-eluting stents (DES) in the treatment of coronary artery disease has led to a significant reduction in morbidity. However, the first generation of these devices ha...

Effect of SQJZ Herbal Mixtures on Non-motor Symptoms of Parkinson's Disease

The purpose of this study is to examine the efficacy and safety of SQJZ Herbal Mixtures on non-motor symptoms of PD patients.

FID-007 in Treating Participants With Advanced Solid Tumors

This phase I trial studies the side effects and best dose of PEOX-based polymer encapsulated paclitaxel FID-007 (FID-007) in treating participants with malignant neoplasms that have spread...

Rapamycin-Eluting Stents With Different Polymer Coating to Reduce Restenosis (ISAR-TEST-3)

The purpose of this study is to evaluate the efficacy of 3 different rapamycin-eluting-stent platforms to reduce coronary artery reblockage after stent implantation

Exogenous Oxidation of Fructose-glucose Mixtures During Running

The aim of this study is to characterise exogenous carbohydrate oxidation rates during exercise, when ingesting glucose (polymers) only, compared to glucose-fructose mixtures, and glucose-...

Medical and Biotech [MESH] Definitions

Strongly cationic polymer that binds to certain proteins; used as a marker in immunology, to precipitate and purify enzymes and lipids. Synonyms: aziridine polymer; Epamine; Epomine; ethylenimine polymer; Montrek; PEI; Polymin(e).

Such mixtures of amphoteric electrolytes or buffers that provide a continuous range of pH in an electric field; used for separating proteins by their isoelectric points, i.e., by isoelectric focusing.

Mixtures of many components in inexact proportions, usually natural, such as PLANT EXTRACTS; VENOMS; and MANURE. These are distinguished from DRUG COMBINATIONS which have only a few components in definite proportions.

The application of STATISTICS to biological systems and organisms involving the retrieval or collection, analysis, reduction, and interpretation of qualitative and quantitative data.

A polymer obtained by reacting polyacrylic acid with a special anion-leachable glass (alumino-silicate). The resulting cement is more durable and tougher than others in that the materials comprising the polymer backbone do not leach out.

Quick Search

DeepDyve research library

Searches Linking to this Article