25 Swelling studies of copolymeric acrylamide/crotonic acid hydrogels as carriers for agricultural uses

Author(s): Karadag, E; Saraydin, D; Caldiran, Y; Guven, O

Title: Swelling studies of copolymeric acrylamide/crotonic acid hydrogels as carriers for agricultural uses

Source: POLYMERS FOR ADVANCED TECHNOLOGIES, 11 (2): 59-68 FEB 2000

Language: English

Document Type: Article

Author Keywords: swelling; hydrogel; diffusion; crosslinking; network

Keywords Plus: BOVINE SERUM-ALBUMIN; AQUEOUS-SOLUTIONS; CATIONIC DYES; ADSORPTION; BIOCOMPATIBILITY; PARAMETERS; BEHAVIORS; POLYMERS

Abstract: In this study, highly swollen acrylamide/crotonic acid hydrogels tilt a rod form) containing some inorganic salts such as ammonium nitrate potassium nitrate and ammonium sulphate used as fertilizer, an agricultural drug such as Dalapon (sodium 2,2-dichloropropionate) and two crosslinkers such as ethylene glycol dimethacrylate and 1,4-butandiol dimethacrylate were prepared by copolymerization of acrylamide and crotonic acid with gamma-radiation. As a result of swelling tests, the influence of gamma-ray dose and relative content of crotonic acid on the swelling properties, the diffusional behavior of water, diffusion coefficients and network properties of the hydrogel systems were examined. Acrylamine/crotonic acid hydrogels containing these salts and agricultural drug were swollen in the range 2045-400% in water, while polyacrylamide hydrogels swelled in the range 660-700%. Water intake of hydrogels followed a nonFickian-type diffusion. Copyright (C) 2000 John Wiley & Sons, Ltd.

Addresses: Adnan Menderes Univ, Fen Edebiyat Fac, Dept Chem, TR-09010 Aydin, Turkey; Cumhuriyet Univ, Fen Edebiyat Fac, TR-58140 Sivas, Turkey; Univ Hacettepe, Fen Fac, Dept Chem, TR-06532 Ankara, Turkey

Reprint Address: Karadag, E, Adnan Menderes Univ, Fen Edebiyat Fac, Dept Chem, TR-09010 Aydin, Turkey.

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Cited Reference Count: 34

Times Cited: 6

Publisher: JOHN WILEY & SONS LTD

Publisher Address: BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND

ISSN: 1042-7147

29-char Source Abbrev.: POLYM ADVAN TECHNOL

ISO Source Abbrev.: Polym. Adv. Technol.

Source Item Page Count: 10

Subject Category: POLYMER SCIENCE

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