Synthesis of physically cross-linked gum Arabic-based polymer hydrogels with enhanced mechanical, load bearing and shape memory behavior

Synthesis of physically cross-linked gum Arabic-based polymer hydrogels with enhanced mechanical, load bearing and shape memory behavior

The TiO 2 dispersed physically cross-linked polymer hydrogels were synthesized through a single step free radical addition polymerization mechanism based on acrylic acid and gum Arabic (GA) as polymer constituents, and ferric ions (Fe 3+ ) as physical cross-linker. The effect of TiO 2 powder was inv...

Full description

Saved in:
Bibliographic Details
Published in:Iranian polymer journal Vol. 29; no. 4; pp. 351 - 360
Main Authors: Khan, Mansoor, Shah, Luqman Ali, Rehman, Tanzilur, Khan, Abbas, Iqbal, Anwar, Ullah, Mohib, Alam, Sultan
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-04-2020
Springer Nature B.V
Subjects:
Acrylic acid
Addition polymerization
Bioengineering
Body parts
Ceramics
Chemical synthesis
Chemistry
Chemistry and Materials Science
Composites
Crosslinking
Dispersion
Dynamic mechanical analysis
Ferric ions
Free radical polymerization
Free radicals
Glass
Hydrogels
Iron constituents
Load bearing elements
Mechanical properties
Modulus of elasticity
Natural Materials
Original Research
Polymer Sciences
Polymers
Shape memory
Storage modulus
Stretchability
Thermodynamic properties
Thermogravimetric analysis
Titanium dioxide
Stretchability
Maxwellian behavior
Hydrogels
Cole–cole plot
Shape memory
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The TiO 2 dispersed physically cross-linked polymer hydrogels were synthesized through a single step free radical addition polymerization mechanism based on acrylic acid and gum Arabic (GA) as polymer constituents, and ferric ions (Fe 3+ ) as physical cross-linker. The effect of TiO 2 powder was investigated on thermal and mechanical properties of the hydrogels by dispersion of 0.01, 0.02 and 0.03 g of TiO 2 in hydrogels. The prepared hydrogels were successfully characterized through FTIR, XRD, SEM and thermogravimetric analysis (TGA). For the mechanical properties, dynamic mechanical analysis and universal testing machine (UTM) were used. The DMA results showed that the storage modulus was increased with the TiO 2 , while UTM results showed that 0.02 g of TiO 2 powder significantly enhanced the fracture stress, elastic modulus, toughness and stretchability by 4514%, 4328%, 4124% and 20%, respectively, compared to the virgin hydrogels. Cole–Cole plot confirmed the homogeneity and viscoelastic behavior of the system, while manual load bearing and shape memory test showed that the hydrogels bear a load of 2.5 kg for a long time and it is recovered within 10 s to its original state. The materials can be applied for the synthesis of artificial body parts in the field of bio-engineering. The use of un-modified GA for the synthesis of hydrogels will open a new window for the researchers working in this field.
ISSN:1026-1265
1735-5265
DOI:10.1007/s13726-020-00801-z