Hydrothermal modification of wheat starch. Part 2. Thermal characteristics of pasting and rheological properties of pastes

2016 ◽  
Vol 69 ◽  
pp. 194-198 ◽  
Author(s):  
Artur Gryszkin ◽  
Tomasz Zięba ◽  
Małgorzata Kapelko-Żeberska
Keyword(s):  
Rheological Properties ◽  
Thermal Characteristics ◽  
Wheat Starch ◽  
Hydrothermal Modification

Rheological Properties of Mixed Gels using Waxy and Non-waxy Wheat Starch

2002 ◽  
Vol 54 (9) ◽  
pp. 410-414 ◽  
Author(s):  
Tomoko Sasaki ◽  
Takeshi Yasui ◽  
Junko Matsuki ◽  
Takaaki Satake
Keyword(s):  
Rheological Properties ◽  
Wheat Starch ◽  
Waxy Wheat

Effects of Soy Protein on Physical and Rheological Properties of Wheat Starch

2007 ◽  
Vol 59 (12) ◽  
pp. 614-623 ◽  
Author(s):  
Pablo D. Ribotta ◽  
Andrés Colombo ◽  
Alberto E. León ◽  
M. Cristina Añón
Keyword(s):  
Rheological Properties ◽  
Soy Protein ◽  
Wheat Starch

Influence of sage seed gum on some physicochemical and rheological properties of wheat starch

2017 ◽  
Vol 69 (11-12) ◽  
pp. 1600356 ◽  
Author(s):  
Ali Reza Yousefi ◽  
Younes Zahedi ◽  
Seyed M. A. Razavi ◽  
Naser Ghasemian
Keyword(s):  
Rheological Properties ◽  
Wheat Starch ◽  
Seed Gum

scholarly journals Thermal Stability and Rheological Properties of Epoxidized Natural Rubber-Based Magnetorheological Elastomer

2019 ◽  
Vol 20 (3) ◽  
pp. 746 ◽  
Author(s):  
Nurul Yunus ◽  
Saiful Mazlan ◽  
Ubaidillah ◽  
Siti Abdul Aziz ◽  
Salihah Tan Shilan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Natural Rubber ◽  
Rheological Properties ◽  
Strain Amplitude ◽  
Thermal Analyses ◽  
Thermal Characteristics ◽  
Epoxidized Natural Rubber ◽  
Effect Of Temperature ◽  
Temperature Dependent ◽  
Roll Mill

Determination of the thermal characteristics and temperature-dependent rheological properties of the magnetorheological elastomers (MREs) is of paramount importance particularly with regards to MRE applications. Hitherto, a paucity of temperature dependent analysis has been conducted by MRE researchers. In this study, an investigation on the thermal and rheological properties of epoxidized natural rubber (ENR)-based MREs was performed. Various percentages of carbonyl iron particles (CIPs) were blended with the ENR compound using a two roll-mill for the preparation of the ENR-based MRE samples. The morphological, elemental, and thermal analyses were performed before the rheological test. Several characterizations, as well as the effects of the strain amplitude, temperature, and magnetic field on the rheological properties of ENR-based MRE samples, were evaluated. The micrographs and elemental results were well-correlated regarding the CIP and Fe contents, and a uniform distribution of CIPs was achieved. The results of the thermal test indicated that the incorporation of CIPs enhanced the thermal stability of the ENR-based MREs. Based on the rheological analysis, the storage modulus and loss factor were dependent on the CIP content and strain amplitude. The effect of temperature on the rheological properties revealed that the stiffness of the ENR-based MREs was considered stable, and they were appropriate to be employed in the MRE devices exposed to high temperatures above 45 °C.

scholarly journals Properties of corn starch subjected hydrothermal modification

2017 ◽  
Vol 31 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Artur Gryszkin ◽  
Tomasz Zięba ◽  
Małgorzata Kapelko-Żeberska
Keyword(s):  
Differential Scanning Calorimetry ◽  
Corn Starch ◽  
Heating Temperature ◽  
Thermal Characteristics ◽  
Scanning Calorimetry ◽  
Water Dispersion ◽  
Swelling Power ◽  
Hydrothermal Modification ◽  
Starch Paste

Abstract The objective of this study was to determine the effect of heating a water dispersion of corn starch to various temperatures, followed by its freezing and defrosting, on selected properties of re-formed starch pastes. A suspension of starch was heated to various temperatures ranging from 59 to 94°C, and afterwards frozen and defrosted. The differential scanning calorimetry (Mettler Toledo, 822E) thermal characteristics of starch pre-heated to temperatures not inducing complete pasting revealed transitions of: (I) retrograded amylopectin, (II) non-pasted starch, (III) amylose-lipid complexes, (IV) retrograded amylose, and (V) highly thermostable starch structures. The application of higher temperatures during heating caused disappearance of transitions II and V. The increase of pre-heating temperature induced firstly a decrease and then stabilization of the swelling power as well as a successive decrease in starch solubility. Pastes pre-heated to temperatures over 79°C contained large macroparticles that were increasing viscosity of the re-formed starch paste (their size was positively correlated with viscosity value).

PHYSICAL AND RHEOLOGICAL PROPERTIES OF HYPER MODIFIED BITUMENS BY SBS

2019 ◽  
Author(s):  
Mohammed BOUCHERBA
Keyword(s):  
Rheological Properties ◽  
Viscoelastic Material ◽  
Thermal Characteristics ◽  
Modified Bitumen ◽  
Short Life ◽  
The Road ◽  
On The Road ◽  
Pavement Concrete

The asphalt is the important component to link the mineral materials of the road, the asphalt as a viscoelastic material, their mechanical and thermal characteristics insufficient for our region (Southern Algeria), the traditional asphalt which used in Algeria is hard but has his short life, For this reason impose Algeria and other country in the last year to improve the traditional materials of pavement concrete, by adding the polymers that allow to reduce the sensitivity part to temperature and viscous, and increases its flexibility and rigidity.In this study, we modified the asphalt by 5% we called standard modified bitumen and 7.5% noted as the hyper modified bitumen, in this modification we used an SBS, and follow the influence of polymer on asphalt viscosity, their mechanical and rheological characters changes using DMA test. also other tests carried out showed that adding of 7.5% by SBS, increase the rigidity, elasticity and reduce thermal susceptibility, in addition can predict the behavior of asphalt on the road.

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