Mechanics and rheology

Ebook "Viscoelasticity of polymers: Theory and numerical algorithms" offers a comprehensive introduction to polymer rheology with a focus on the viscoelastic characterization of polymeric materials. It contains various numerical algorithms for the processing of viscoelastic data, from basic principles to advanced examples which are hard to find in the existing literature.

615p tracanhphuonghoa1007 22-04-2024 4 2   Download

Ebook "The structure and rheology of complex fluids" describes the microstructures of polymeric, colloidal, amphiphilic, and liquid crystalline liquids, and the relationship between microstructure and mechanical and flow properties. This book provides illustrations, practical examples, and worked problems. It serves as both a textbook for a graduate course and a research monograph.

682p loivantrinh 29-10-2023 10 2   Download

Pectins are traditionally divided into two groups, high methoxy and low methoxy. The groupings determine the charge of the pectin and the gelation mechanism. The addition of monovalent ions changed the rheological behavior to resemble that of a strong gel whose properties depended on the type and concentration of the ions.

8p vihermione 06-01-2023 8 2   Download

Oat mixed-linkage -glucan has been shown to lower fasting blood cholesterol concentrations due notably to an increase in digesta viscosity in the proximal gut. To exert its action, the polysaccharide has to be released from the food matrix and hydrated.

11p vihermione 06-01-2023 9 2   Download

Biodegradable blends of urea plasticized thermoplastic starch (UTPS) and poly(-caprolactone) (PCL) were prepared in a co-rotating twin screw extruder. The UTPS and PCL content varied in a range of 25 wt%.

8p vihermione 06-01-2023 6 3   Download

This work aimed to produce and characterize cellulose nanofibers obtained from cassava peel with a combination of pre-treatments with acid hydrolysis or TEMPO-mediated oxidation and ultrasonic disintegration. All nanofibers presented nanometric diameter (5−16 nm) and high negative zeta potential values (around −30 mV).

9p viginny 30-12-2022 7 2   Download

Poloxamer 407 (polox407) is widely studied as thermogelling polymer, transitioning to a gel state when warmed Polox407 forms weak hydrogels with rapid dissolution in excess solvent. This study reports the development of binary systems composed of polox407 and hydroxypropyl methylcellulose (HPMC) or sodium carboxymethylcellulose (NaCMC) aiming to improve the rheological and mechanical properties of the hydrogel.

14p viginny 30-12-2022 7 2   Download

Principles of Rock Mechanics: Part 1 has present the contents mechanics and rheology; introduction to rock mechanics; physical quantities and continua; force, pressure, and stress; stress ellipsoid and sign conventions; elasticity; brittle failure; ductile creep; viscosity and flow laws;...

160p chenlinong_0310 23-02-2022 11 1   Download

This study aimed to investigate the effect of ultraviolet light and ultrasound on the antioxidant activity and rheological properties of pear fruit jam. The antioxidant potential of fruit jam was determined by three methods based on different mechanisms (DPPH ABTS and CUPRAC assays) in six samples treated with ultrasonic waves and ultraviolet light.

5p mudbound 10-12-2021 14 2   Download

The research and application of using mathematical or mechanical models in accordance with the new soft soil improvement method will greatly help as well as add additional options for soft soil improvement in Vietnam. The soft soil deformation is not only related to load but also to load time. The change in stress and deformation of weak soil over time is called rheology, and in this study is the viscoelastic behavior

11p nguaconbaynhay12 13-06-2021 13 1   Download

In this research, we mainly present the effect of modified waste-gypsum (MWG) contents on the rheological, physico-mechanical and thermal properties of the PVC/MWG polymeric composite materials. Four kinds of rigid PVC/MWG composite with different MWG contents were prepared by melt blending method. The morphological development of the PVC/MWG polymeric composite samples is also discussed in this paper.

9p dannisa 14-12-2018 24 0   Download

In the paper the rheological properties of crude oil of White Tiger oil-field (Vietnam) and its emulsion with sea-water, including measurement results and analytical approximation formulae for wide range of pressure, temperature and water concentration, are presented.

18p chikychiky 01-11-2018 31 2   Download

(bq) part 1 book "dynamic mechanical analysis - a practical introduction" has contents: an introduction to dynamic mechanical analysis; basic rheological concepts stress, strain, and flow; rheology basics - creep–recovery and stress relaxation; dynamic testing.

101p bautroibinhyen19 02-03-2017 55 3   Download

Certain studies were excluded because of methodological flaws or inadequate descriptions. We excluded studies in which the predictions were made on different sets of individuals. To include such studies would have left open the possibility that one method proved superior as a result of operating on cases that were easier to predict.

26p loixinloi 08-05-2013 58 2   Download

Tham khảo sách 'bioprocessing pipelines rheology and analysis', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

175p nt1810 25-04-2013 44 4   Download

The interior structure of the earth is layered in spherical shells, like an pears. Earth has an outer silicate solid crust , a highly viscous mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core .The structure of the Earth can be determined in two ways, including mechanical or chemical properties such as rheology. Mechanically, we divided it into five layers, including the lithosphere, the atmosphere soft, middle coating, outer core, and inner core. On the chemical side, we split it into the crust, upper mantle, lower crust mantle, outer core and...

10p duc_hong 01-04-2013 81 4   Download

This book contains a wealth of useful information on current research on viscoelasticity. By covering a broad variety of rheology, non-Newtonian fluid mechanics and viscoelasticity-related topics, this book is addressed to a wide spectrum of academic and applied researchers and scientists but it could also prove useful to industry specialists. The subject areas include, theory, simulations, biological materials and food products among others.

0p camchuong_1 04-12-2012 57 3   Download

Rheology involves the study of the deformation and flow of matter. The goal is to establish relationships between stress and deformation for (non-Newtonian) materials where neither Newton's law nor Hooke's law suffice to explain their mechanical behaviour. Many materials exhibit a non-Newtonian behaviour and the area is relevant in many fields of study from industrial to technological applications such as concrete technology, geology, polymers and composites, plastics processing, paint flow, hemorheology, cosmetics, adhesives, etc ......

350p qsczaxewd 25-09-2012 116 15   Download

Composite materials often demand a unique combination of properties, including high thermal and oxidative stability, toughness, solvent resistance and low dielectric constant. This book, "Thermoplastic - Composite Materials", is comprised of seven excellent chapters, written for all specialized scientists and engineers dealing with characterization, thermal, mechanical and technical properties, rheological, morphological and microstructure properties and processing design of composite materials.

0p orchid_1 25-09-2012 76 24   Download

Number of the equipments used in everyday life remarkably increased after the invention of synthetic polymers, especially of styrene-butadiene rubber in 1930 and of PVC in 1936, and thanks to fast-developing polymer technologies. Polymers are light, cheap and ductile inert materials, which have good mechanical and thermal properties, suitable to use for various purposes and are highly resistant to corrosion. Thanks to such properties, they play an essential and ubiquitous role in many industrial fields.

0p wqwqwqwqwq 06-07-2012 131 22   Download