Understanding the influence of chemical structure and length of hydrophobic blocks on the rheological properties of associative copolymers

Hydrogels have gained a lot of attention with their widespread use in different industrial applications. The versatility in the synthesis and the nature of the precursor reactants allow for a varying range of hydrogels with different mechanical and rheological properties. Understanding of the rheological behavior and the relationship between the chemical structure and the resulting properties is crucial, and is the focus of this review. Specifically, we include detailed discussion on the correlation between the rheological characteristics of hydrogels and their possible applications. Different rheological tests such as time, temperature and frequency sweep, among others, are described and the results of those tests are reported. The most prevalent applications of hydrogels are also discussed.

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Effect of oleic purity on the chemical structure, thermal and rheological properties of bio-based polymers derived from high oleic cottonseed oil via RAFT polymerization

Industrial Crops and Products ◽

10.1016/j.indcrop.2021.113882 ◽

2021 ◽

Vol 171 ◽

pp. 113882

Author(s):

Houlei Gan ◽

Sally A. Hutchinson ◽

Christopher Hurren ◽

Qing Liu ◽

Xungai Wang ◽

...

Keyword(s):

Rheological Properties ◽

Chemical Structure ◽

Raft Polymerization ◽

Cottonseed Oil ◽

High Oleic

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Chemical Structure and Rheological Properties of Tara Polysaccharide Gum

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.821-822.986 ◽

2013 ◽

Vol 821-822 ◽

pp. 986-989

Author(s):

Jin Ba ◽

Li Qiang Jin ◽

Wen Run Yao

Keyword(s):

Shear Rate ◽

Rheological Properties ◽

Chemical Structure ◽

Mass Ratio ◽

Gas Chromatograph ◽

Plant Polysaccharides ◽

Mechanical Process ◽

Composition And Structure ◽

Ft Ir ◽

Tree Seeds

Tara gum is a natural hydrocolloid obtained by a mechanical process from the endosperm of Tara tree seeds. In this study, chemical composition and structure of tara polysaccharide gum were characterized by fourier transform infrared spectroscopy (FT-IR) and gas chromatograph-mass spectrometer (GC-MS). Its rheological properties were also discussed. The results showed that tara gum had typical characteristics of plant polysaccharides, which was mainly consisted of galactose and mannose (mass ratio of galactose/mannose was 4.2:1), as well as a small amount of arabinose, glucose and xylose. The viscosity of tara gum solution was increased with the increase of its concentration. The tara gum solution demonstrated a higher viscocity at the shear rate lower than 80 Hz, but a higher elasticity at the shear rate higher than 80 Hz.

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