Rheological properties of tough hydrogels based on an associating polymer with permanent and transient crosslinks: Effects of crosslinking density

2017 ◽  
Vol 61 (6) ◽  
pp. 1371-1383 ◽  
Author(s):  
Jingwen Zhao ◽  
Koichi Mayumi ◽  
Costantino Creton ◽  
Tetsuharu Narita
Keyword(s):  
Rheological Properties ◽  
Crosslinking Density ◽  
Associating Polymer

Simulation of self-associating polymer systems. II. Rheological properties

1998 ◽  
Vol 109 (21) ◽  
pp. 9614-9622 ◽  
Author(s):  
P. G. Khalatur ◽  
A. R. Khokhlov ◽  
D. A. Mologin
Keyword(s):  
Rheological Properties ◽  
Polymer Systems ◽  
Associating Polymer

scholarly journals The synthesis, characterisation and rheological properties of clay-polymer nanocomposites

2020 ◽  
Author(s):  
◽  
Hassan Judah
Keyword(s):  
Thermogravimetric Analysis ◽  
Rheological Properties ◽  
Polymer Nanocomposites ◽  
Mechanical Stability ◽  
Crosslinking Agent ◽  
Polymer Nanocomposite ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Morphological Examination ◽  
X Ray

This study aims to investigate the effect of different crosslinking agent and different crosslinking agent content on the material properties of the clay-polymer nanocomposite. A lot of materials were tried to be mixed to form a fully-reacted clay-polymer nanocomposite for the first time, which is a part of the novelty for this work. The overall properties governed by clay properties and clay/polymer relationship are prime aspects of this study. The Enhancement of significant properties of nanocomposites is a measure of clay platelets dispersion within the polymer matrix. Different approaches were adopted to understand the influence of clay properties on the nanocomposite; (i) by examining and comparing different clays as raw, dry, powder material using spectroscopy and thermogravimetric analysis (ii) mechanical examination of clay/water suspension of different clay types/grads, and different concentrations varying from 0.5 % - 10 % using rheological studies (iii) chemical and mechanical and morphological examination of Clay/Polymer nanocomposite with different clay types/grades, concentration, and polymers. The synthesis of such material addresses issues including heterogeneity, processability, injectability, crosslinking and mechanical stability. The synthesis requires no purification steps no specialist equipment, and basic typical components of crosslinked nanocomposite/hydrogels (water, monomer, clay and initiator). Morphological, pore size and scaffolding general arrangement which shows the effect of different crosslinking agents and crosslinking density were examined by Scanning Electron Microscope (SEM) to acquire information on wide/small pores are, diffusion kinetics in the system if required for further applications. The nature and elemental composition of the clay-polymer nanocomposites were determined by X-ray diffraction (XRD), X-ray fluorescence (XRF), and Fourier Transfer Infrared (FTIR) spectroscopy. The water content in the dry clay-polymer nanocomposite was determined and examined by Thermogravimetric analysis (TGA). Mechanical and rheological properties of the result were examined using a rheometer that operates on different modes (as a Dynamic Mechanical Analysis (DMA) technique) to evaluate the structure, performance, strength, and mechanical modules of these nanocomposites under different rotational and oscillatory loads. This offers the opportunity to relate the differences to the clays and polymers the hydrogels were synthesised from.

Computational Study of the Structure and Rheological Properties of Self-Associating Polymer Networks

2015 ◽  
Vol 48 (17) ◽  
pp. 6313-6320 ◽  
Author(s):  
Mark Wilson ◽  
Avinoam Rabinovitch ◽  
Arlette R. C. Baljon
Keyword(s):  
Rheological Properties ◽  
Computational Study ◽  
Polymer Networks ◽  
Associating Polymer

Using the alveograph in developing requirements for the quality of flour for wafer sheet production

2020 ◽  
Vol 29 (12) ◽  
pp. 52-58
Author(s):  
E.P. Meleshkina ◽  
◽  
S.N. Kolomiets ◽  
A.S. Cheskidova ◽  
◽  
...  
Keyword(s):  
Rheological Properties ◽  
Quality Indicators ◽  
Wheat Flour ◽  
Mathematical Statistics ◽  
Intended Purpose ◽  
The Future ◽  
Relationship Of ◽  
The Relationship

Objectively and reliably determined indicators of rheological properties of the dough were identified using the alveograph device to create a system of classifications of wheat and flour from it for the intended purpose in the future. The analysis of the relationship of standardized quality indicators, as well as newly developed indicators for identifying them, differentiating the quality of wheat flour for the intended purpose, i.e. for finished products. To do this, we use mathematical statistics methods.

THE INFLUENCE OF SELECTED POLYMERS ON THE RHEOLOGICAL PROPERTIES OF HYDROGELS WITH CHITOSAN APPLIED ON THE SKIN

2017 ◽  
Vol XXII ◽  
pp. 201-206 ◽  
Author(s):  
Maria Szcześniak ◽  
◽  
Bożena Grimling ◽  
Jan Meler ◽  
Bożena Karolewicz
Keyword(s):  
Rheological Properties

THE RHEOLOGICAL PROPERTIES OF BLOOD UNDER BASAL CELL SKIN CANCER IN THE IMMEDIATE POSTOPERATIVE PERIOD

2016 ◽  
Vol 26 (3) ◽  
pp. 370-380
Author(s):  
Vladimir V. Maslyakov ◽  
◽  
Olga I. Dralina ◽  
Yuliya B. Vlasenko ◽  
Larisa M. Kim
Keyword(s):  
Skin Cancer ◽  
Rheological Properties ◽  
Basal Cell ◽  
Postoperative Period
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