Next Article in Journal
Temperature Variability of Poisson’s Ratio and Its Influence on the Complex Modulus Determined by Dynamic Mechanical Analysis
Next Article in Special Issue
Enormously Low Frictional Surface on Tough Hydrogels Simply Created by Laser-Cutting Process
Previous Article in Journal / Special Issue
A Suppression Method for Elution of F, [B(OH)4], AsO43−, and CrO42− from Industrial Wastes Using Some Inhibitors and Crushed Stone Powder
Article Menu
Issue 3 (September) cover image

Export Article

Open AccessArticle
Technologies 2018, 6(3), 80;

Reversible Gelation System for Hydrazine Based on Polymer Absorbent

Department of Chemistry and Chemical Engineering, Faculty of Engineering, Yamagata University, Yonezawa City, Yamagata 992-8510, Japan
Author to whom correspondence should be addressed.
Received: 11 July 2018 / Revised: 6 August 2018 / Accepted: 13 August 2018 / Published: 20 August 2018
(This article belongs to the Special Issue Smart Systems)
Full-Text   |   PDF [727 KB, uploaded 20 August 2018]   |  


Reversible absorbents for safe storage of toxic hydrazine were developed. Various cross-linked polar polymers were examined as absorbents for hydrazine and its 35% aqueous solution, and structurally similar polymers were found to be suitable for effective absorption. Namely, cross-linked polyacrylamide (CPAM) was most effective among examined various hydrophilic polymers. CPAM absorbed 43- and 31-fold heavier amounts of absolute hydrazine and 35% aqueous solution, respectively, by simple soaking. Absorbed hydrazine could be quantitatively released either by N2 gas flow and compression, and the resulting absorbent reabsorbed hydrazine without loss of the absorption ability. The absorption ability was higher than conventional covalent storages, and the release protocol, without dissolution of the absorbent, are suitable for storage systems in hydrazine fuel cells. View Full-Text
Keywords: hydrazine; reversible gelation; fuel cell; absorbent hydrazine; reversible gelation; fuel cell; absorbent

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Ochiai, B.; Shimada, Y. Reversible Gelation System for Hydrazine Based on Polymer Absorbent. Technologies 2018, 6, 80.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Technologies EISSN 2227-7080 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top