Erdener KARADAĞ, Olgun GÜVEN, Dursun SARAYDIN

Influence of some crosslinkers on the swelling of acrylamide-crotonic acid hydrogels

Acrylamide-crotonic acid hydrogels in the form of rods are prepared by $gamma$-irradiation of quaternary mixtures of acrylamide-crotonic acid-crosslinker-water with 2.6 and 5.2 kGy $gamma$-rays. The influence of the applied dose, the relative content of crotonic acid and crosslinkers such as ethylene glycol dimethacrylate, 1.4 butanediol dimethacrylate and N,N' methylenebisacrylamide on the swelling properties of the gel, the diffusional behaviour of water, the diffusion coefficient, and the network parameters of hydrogel systems are examined. Acrylamide-crotonic acid hydrogels containing various crosslinkers had a maximum swelling in the range 240-850 %. Water diffusion to hydrogels was non-Fickian. The diffusion coefficients varied between 4.6 times $10^{-7}$ and 9.1 times $10^{-7}$ $cm^2 s^{-1}$.

PDF

___

1. B. Kickhofen, H. Wokalek, D. Scheel, H. Ruh, Biomaterials, 7, 67-72 (1986).
2. A.G. Andreopoulos, Eur. Polym. J., 25, 9, 977-979 (1989).
3. W.M. Kulicke, H. Nottelman, Polymers in Auous Media, Performance through Association, Ed. J. E. Glass, 223, Advanced in Chemistry Series, 15-44, (1989).
4. J. Kost, R. Langer, Hydrogels Medicine and Pharmacy, Ed. N.A. Reppas, 3, CRC Press, Florida, 95-105 (1987). 5. D. Saraydin, E. Karadag, 0. Giiven, Turkish Journal of Chemistry, 19, 3, 179-187, (1995).
6. E. Karadag, D. Saraydin, 0. Giiven, Jour. Applied Polymer Science, 61, 2367-2372, (1996).
7. D. Saraydın, E. Karachi, Gaven, Separation 5d e. Techn., 31(3), 423-433, (1906).
8. E. Karadağ, D. Saraydın, O. Güven, Polimer Bulletin, 36, 745-752, (1996).
9. E. Karadağ, D. Saraydın, O. Güven, Separation Scie. Tech., 30(20), 3747-3760, (1995).
10- D. Snirmythe., E. Kara414", a Gilweb, Separation Side. 1echn., 30(17)., 3291-3302, (160).
11. E. Karadat, D- Saraydm„ S- Ir.:etinkaya, 0. Ciiven Bionm.teriate, 17 (1), 67-70, MOW_
12_ D.Saita.ydnfl, E. Karad.a.g, a ciiiven, Polymer Advanced T'cchn-,. 6, T19-72 (1990.
13_ J. finNial., Burczalk, T. C...sullsyrisks. W. Pek83b_ Radlot Phys-. Chem.,. 22, 3-5, 917-920 49E13).
14. J. Rosiak, K. Burczak, W. Pekala, N. Pilewski, S. Itziak, A. Charlesby, Radist. Phys. Chem., 32, 6 793-969
15.. d. Rosiak, K. Burczak, W. Pekala, Phys- Chem, 221 3, 9C17.915 (1944
16. N.A. Pepin's, Eq_M.Pransran, J. Polly. Sci. (Poly. Phys. Ed.) , 21, 983-9N (19153).
17, fluckLey, MIL Berger, 11 Puller, J. POIYIriet Sae.. 56, 163-174 (19152). 113. P.L. Ritger, Ni-A- Pe pas, J. Controlled Release, 5., 1,23-36, (1D27).
10. 3_ Crank, C.S. Park_ Diffusion in Polymers, Acadecrik Prar.s, Niw York, (1913.10- 211. 11. Slhankar., Polymer., 2113, 254-256, (1079).
21. Y. Li, T. Tanaka, J. Chem.. Phys.., 612, 2', 1365-1271 (11300).
22 Z.Y. Ding., .1,1 Akinois, H. Salc,vry, J. Poly. SEL, Poly Phyr.., 20 1025-.1038
Ationyubous, Handbook of Chern. and Phys-, Ed. Wean, O.K., 2- Ed. CRC Timm iiiga). 71. J. Ilaaelga., FL1q. b4iaz:eg.cea,1y1.A. LLo.re.Dte. Polyna.. Jour, 2174, 467-474 (1989).