Swelling of Superabsorbent Acrylamide/Sodium Acrylate Hydrogels Prepared Using Multifunctional Crosslinkers

Erdener KARADAĞ

Makale detayları

Swelling of Superabsorbent Acrylamide/Sodium Acrylate Hydrogels Prepared Using Multifunctional Crosslinkers

Yazarlar:

Erdener KARADAĞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2002 Vol.26 Issue 6, pp.863-876

Belge Tipi:

Makale

Yayın Tarihi:

5/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000729720

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Superwaterabsorbent acrylamide-sodium acrylate hydrogels were   Prepared by free radical polymerization in aqueous solutions of  acrylamide and of acrylamide with sodium acrylate as comonomer.  For each  copolymerization, nine different compositions were used and in all  systems a concentration of a multifunctional crosslinker such as  trimethylolpropane triacrylate, ethylene glycol dimethacrylate,  1,4-butanediol dimethacrylate and N,N'-methylenebisacrylamide was  employed.  As a result of dynamic swelling tests, the influence of  crosslinkers and the relative content of sodium acrylate on the  swelling properties, the initial swelling rate and the swelling rate  constant, swelling exponent, swelling coefficients and diffusional  behaviour of water in the hydrogel systems were examined.   Acrylamide-sodium acrylate hydrogels were swollen in the range  860-12870% in water, while acrylamide hydrogels swelled in the range  770-1420%. The equilibrium water content of acrylamide-sodium  acrylate hydrogel systems was calculated in the range 0.8851-0.9922.   The water intake of hydrogels followed a non-Fickian type diffusion.

 

Superwaterabsorbent acrylamide-sodium acrylate hydrogels were   Prepared by free radical polymerization in aqueous solutions of  acrylamide and of acrylamide with sodium acrylate as comonomer.  For each  copolymerization, nine different compositions were used and in all  systems a concentration of a multifunctional crosslinker such as  trimethylolpropane triacrylate, ethylene glycol dimethacrylate,  1,4-butanediol dimethacrylate and N,N'-methylenebisacrylamide was  employed.  As a result of dynamic swelling tests, the influence of  crosslinkers and the relative content of sodium acrylate on the  swelling properties, the initial swelling rate and the swelling rate  constant, swelling exponent, swelling coefficients and diffusional  behaviour of water in the hydrogel systems were examined.   Acrylamide-sodium acrylate hydrogels were swollen in the range  860-12870% in water, while acrylamide hydrogels swelled in the range  770-1420%. The equilibrium water content of acrylamide-sodium  acrylate hydrogel systems was calculated in the range 0.8851-0.9922.   The water intake of hydrogels followed a non-Fickian type diffusion.

Makale detayları

Swelling of Superabsorbent Acrylamide/Sodium Acrylate Hydrogels Prepared Using Multifunctional Crosslinkers

Yazarlar: Erdener KARADAĞ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2002 Vol.26 Issue 6, pp.863-876

Belge Tipi: Makale

Yayın Tarihi: 5/2002

Belge Dili: Türkçe

Document ID (Org No.): 2000729720

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Erdener KARADAĞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2002 Vol.26 Issue 6, pp.863-876

Belge Tipi:

Makale

Yayın Tarihi:

5/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000729720

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527