Journal
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
Volume 15, Issue 5, Pages 307-318Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1023666X.2010.493271
Keywords
Dehydration rate; Hydrogel degradation; Ionic hydrogel; Mechanical properties; Polyacrylamide gel
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Polyacrylamide (PAAm) hydrogels are commonly employed to ensure soil hydration in horticulture, but studies have shown that they have a minimal effect on crop life and quality. The reasons for this poor performance are not understood since the commercial hydrogels have not been adequately characterized. PAAm hydrogels were synthesized and their properties were measured along with those of commercial hydrogels. Hydrogel swelling, density, and SEM analyses showed that the commercial hydrogels were most likely a derivative of PAAm with ionic groups and they were able to retain moisture for only a few hours.
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