Practical Improvement of SAP Hydrogel Properties via Facile Tunable Cross-linking of the Particles Surface. (11th February 2016)

• Record Type: Journal Article
• Authors: Moini, Nasrin; Kabiri, Kourosh; Zohuriaan-Mehr, Mohammad J.
• Is Part Of: Polymer-plastics technology and engineering. Volume 55:Number 3(2016)
• Page Start: 278
• Page End: 290
• Publication Date: 2016-02-11
• Subjects: Diethylene glycol diglycidyl ether -- hydrogel swelling -- poly(acrylic acid) -- superabsorbent -- surface cross-linking; Polymers -- Periodicals; Polymerization -- Periodicals; Polymers -- Periodicals; Engineering -- Periodicals; Plastics -- Periodicals; 668.9
• DOI: 10.1080/03602559.2015.1070873
• Languages: English
• ISSNs: 0360-2559

Abstract

ABSTRACT: To improve gel toughness, surface cross-linking of partiallyneutralized acrylic acid based superabsorbent polymers (superabsorbent polymers, prepared by solution polymerization) was performed by diethylene glycol diglycidyl ether. Considering effective factors (treatment solution, surface cross-linker content, post-treatment temperature, and duration), a two-step surface modification procedure was performed on dried superabsorbent polymers particles. Attenuated total reflection–Fourier transform infrared spectroscopy has proved chemical cross-linking reaction. Mechanical properties have also been investigated. Besides, the modified rubber elasticity theory and Flory–Rehner equations have been used to investigate how they work in core–shell-like structure. The optimum condition provides at least a 100% raise in gel strength and appropriate absorbency. GRAPHICAL ABSTRACT: