Poli akrilamid-maleik asit temelli hidrojel kompozitlerin Hazırlanması ve Karakterizasyonu

B u araştırmanın temel amacı Bentonit B ve Zeolit Z minerallerinin hidrojel polimer olan Poliakrilamidko-maleik asit PAA-MA ile oluşturduğu kompozitini hazırlamak ve karakterize etmektir. Polimerlerin elde edilmesinde kullanılan yöntem, kompozitlerin hazırlanmasında da kullanılmış ve B veya Z içeren süspansiyon ortamında bulunan ilgili monomerlere doğrudan polimerleştirme işlemi uygulanmıştır. Hazırlanan PAA-MA ve kompozitlerin yapısal karakterizasyonunda FT-IR, TGA, SEM, BET-Gözeneklilik ve sıfır yüzey yük noktası PZC ile ilgili veri ve analiz sonuçları kullanılmıştır. FT-IR, XRD, TGA, SEM, BET-gözeneklilik ve PZC analiz sonuçları kompozit oluşumu ile ilgili kesin kanıtlar sunmuş, yapıların polimer/mineral hibrit oluşumundan çok biri organik PAA-MA ve diğeri inorganik özellikteki B veya Z iki faz içeren bir karışım olduğu kanısına varılmıştır

Anahtar Kelimeler:

Kompozit , Poliakrilamid-ko-Maleik asit, Bentonit, Zeolit

Preparation and Characterization of Poly acrylamide/maleic acid -based hydrogels Composites

The principle aim of this investigation was the preparation and characterization of the composites formed from Bentonite B and Zeolite Z minerals, and polyacrylamide-co-maleic acid PAA-MA hydrogel polymers. The procedures used in obtaining the polymers were also applied in preparation of the composites by direct polymerization of the monomers of interests dissolved in the suspension of B or Z. The prepared PAA-MA and the composites were characterized with the data and analysis results obtained from FT-IR, TGA, SEM, BET-porosity and Zero Point of Surface Charge PZC . The results of FT-IR, TGA, SEM, BET-porosity and PZC analysis presented certain evidences for the formation of composites, it was impressed that the composites were the mixtures composed of two phases composing of organic PAA-MA and inorganic B or Z phases rather than the formation of polymer/ mineral hybrid.

Keywords:

Composite, Polyacrylamide-co-Maleic Acid, bentonite, zeolite,

PDF

___

T.V. Budtova, I.E. Suleıman, S.Y. Frenkel, On the swelling of polyelectrolyte hydrogels in solutions of lınear-polymers, Vyskom. Sodeny. 35 (1993) 93.
H.N. Oztop, D. Saraydin, E. Karadag, Y. Caldıran, O. Güven, Influence of some aromatic amino acids on the swelling behavior of acrylamide/maleic acid hydrogel, Polym. Bull. 40 (1998) 575.
R. Inam, Y. Gumus, T. Caykara, Competitive removal of Pb2+, Cd2+, and Zn2+ by poly(acrylamide-co-maleic acid) hydrogels/differential pulse polarographic determination, J. Appl. Polym. Sci. 94 (2004) 2401.
E. Karadağ, O.B. Uzum, D. Saraydin, Swelling equilibria and dye adsorption studies of chemically crosslinked superabsorbent acrylamide/maleic acid hydrogels, Eur. Polym J. 38 (2002) 2133.
H. Kaşgöz, New sorbent hydrogels for removal of acidic dyes and metal ions from aqueous solutions, Poly. Bull. 56 (2006) 517.
P.B. Messersmith, F. Znidarsich, Synthesis and LCST behavior of thermally responsive poly(N-isopropyl acrylamide)/layered silicate nanocomposites, Mat. Res. Soc. Symp. Proc. 457 (1997) 507.
J.H. Wu, J.M. Lin, M. Zhou, C.R. Wei, Synthesis and properties superabsorbent composite. Macromolecules. 21 (2000) 1032.
J.M. Lin, J.H. Wu, Z.F. Yang, M.L. Pu, Synthesis and properties of poly(acrylic acid)/mica superabsorbent nanocomposite. Macromolecules. 22 (2001) 422.
W.A. Zhang, W. Luo, Y.E. Fang, Synthesis and properties of a novel hydrogel nanocomposites. Mater. Lett. 59 (2005) 2876.
K. Haraguchi, T. Takehisa, Nanocomposite hydrogels: a unique organic–inorganic network structure with extraordinary mechanical, optical, and swelling/de- swelling properties. Adv. Mater. 14 (2002) 1120.
K. Haraguchi, T. Takehisa, S. Fan, Effects of clay content on the properties of nanocomposite hydrogels composed of poly(N-isopropylacrylamide) and clay. Macromolecules, 35 (2002) 10162.
A. Denizli, R. Say, B. Garipcan, S. Patır, Methacryloylamidoglutamic poly(2-hydroxyethyl methacrylate) beads for UO2+ removal, React. Funct. polym. 58 (2004) 123. acid functionalized 2
X. Yuanqing, P. Zhiqin, A new polymer/clay nano- composite hydrogel with improved response rate and tensile mechanical properties, Eur. Polym. J. 42 (2006) 2125.
U.A. Atay, Ammonia removal from waste waters by the use of zeolite. MSc. Thesis, Cumhuriyet University, Sivas, Turkey. 2002.
B. Demirel, O. Yenigun, T.T. Onay, Anaerobic treatment of dairy wastewaters: a review, Process Biochem. 40 (2005) 2583.
P. Akkas, O. Guven, Enhancement of uranyl ion uptake by prestructuring of acrylamide-maleic acid hydrogels, J. Appl. Polym. Sci. 78 (2000) 284.
R. Akkaya, U. Ulusoy, Adsorptive features of chitosan entrapped in polyacrylamide hydrogel for Pb2+, UO2+ 2 and Th4+, J. Hazard. Mater, 151 (2008) 380.
M. Mullet, P. Fievet, A. Szymczyk, A. Foissy, J.C. Reggiani, J. Pagetti, A simple and accurate determination of the point of zero charge of ceramic membranes, Desalination, 121 (1999) 41.
I. Smiciklas, A. Onjia, S. Raicevic, D. Janackovic, M. Mitric, Factors influencing the removal of divalent cations by hydroxyapatite, J.Hazard. Mat. 152 (2008) 876.
U. Ulusoy, R. Akkaya, Adsorptive features of polyacrylamide–apatite composite for Pb2+, UO2+ and 2 Th4+, J. Hazard. Mater. 163 (2009) 98.
S.E. Abdel-Aal, Synthesis of copolymeric hydrogels using gamma radiation and their utilization in the removal of some dyes in wastwater, J. Appl. Poly. Sci.102 (2006) 3720.
J. Madejova, FTIR techniques in clay mineral studies, Vib. Spectrosc. 31 (2003) 1.
B. Zhang, W. Dai, X.C. Ye, W.Y. Hou, Y. Xie, Solution- phase synthesis and electrochemical hydrogen storage of ultra-long single-crystal selenium submicrotubes, J. Physical Chem. B. 109 (2005) 22830.
M. Alexandre, P. Dubois, Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials, Mat. Sci. Eng. R. 28 (2000) 1.
D. Saraydin, D. Solpan, Y. Isikver, S. Ekici, O. Güven, Radiation crosslinked poly(acrylamide/2- hydroxypropyl methacrylate/maleic acid) and their usability in the uptake of uranium, Macromol. Sci-A. A39 (2002) 969.
J.J. Gulicovski, L.C. Cerovic, S.K. Milonjic, I.G. Popovic, Adsorption of itaconic acid from aqueous solutions onto alumina, J. Serb. Chem. Soc. 73 (2008) 825.
L. Giraldo, J.C. Moreno, Immersion enthalpy and the constants of Langmuir model in the 3-chloro phenol adsorption on activated carbon, J Therm. Anal. Calorim. 100 (2010) 695.
A. Dakovic, M. Kragovic, G.E. Rottinghaus, Z. Sekulic, S. Milicevic, S.K. Milonjic, S. Zaric, N-fluence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1, Colloid. Surface B, 76 (2010) 272.
J.J. Gulicovski, L.S. Cerovic, S.K. Milonjin, Point of zero charge and isoelectric point of alumina, Mater. Manuf. Process. 23 (2008) 615.