1. S. Ekici, D. Saraydın, Synthesis, characterization and evaluation of IPN hydrogels for antibiotic release, Drug Deliv., 11 (2004) 381–388.
  2. N. Sezgin, N. Balkaya, Adsorption of heavy metals from industrial wastewater by using polyacrylic acid hydrogel, Desal. Wat. Treat., 57 (2016) 2466–2480.
  3. N. Sahiner, W.T. Godbey, G.L. McPherson, V.T. John, Microgel, nanogel and hydrogel-hydrogel semi-IPN composite for biomedical applications: synthesis and characterization, Colloid Polym. Sci., 284 (2006) 1121–1129.
  4. N.S. Satarkar, J.Z. Hilt, Hydrogel nanocomposites as remote-controlled biomaterials, Acta Biomater., 4 (2008) 11–16.
  5. R. Singhal, K. Gupta, A Review: Tailor-made hydrogel structures (classifications and synthesis parameters), Polym. Plast. Technol. Eng., 55 (2016) 54–70.
  6. F. Ullah, M.B.H. Othman, F. Javed, Z. Ahmad, H. Md. Akil, Classification, processing and application of hydrogels: a review, Mater. Sci. Eng. C., 57 (2015) 414–433.
  7. M. Pulat, N. Tan, F. Onurdağ, Swelling dynamics of IPN hydrogels including acrylamide-acrylic acid-chitosan and evaluation of their potential for controlled release of piperacillin- tazobactam, J. Apply. Polym. Sci., 120 (2011) 441–450.
  8. M.A. Barakat, N. Sahiner, Cationic hydrogels for toxic arsenate removal from aqueous environment, J. Environ. Manage., 88 (2008) 955–961.
  9. F. Chiellini, F. Petrucci, E. Ranucci, R. Solaro, Bioerodible hydrogels based on 2-hydroxylethyl methacrylate: synthesis and characterization, J. Appl. Polym. Sci., 85 (2002) 2729–2741.
  10. J.M. Rosiak, F. Yoshii, Hydrogels and their medical applications, Nucl. Instrum. Meth. B., 151 (1999) 56–64.
  11. N. Sahiner, Hydrogels of versatile size and architecture for effective environmental applications, Turk. J. Chem., 32 (2008) 113–123.
  12. J. Zhang, N.A. Peppas, Synthesis and characterization of pHand temperature-sensitive poly (methacrylic acid)/poly(N-isopropylacrylamide) interpenetrating polymeric networks, Macromolecules, 33 (2000) 102–107.
  13. S. Ekici, D. Saraydın, Interpenetrating polymeric network hydrogels for potential gastrointestinal drug release, Polym. Int., 56 (2007) 1371–1377.
  14. J.D. Kosmala, D.B. Henthorn, L. Brannon-Peppas, Preparation of interpenetrating network of gelatin and dextran as degradable biomaterials, Biomaterials, 21 (2000) 2019–2023.
  15. Y.M. Mohan, P.S.K. Murthy, K.M. Raju, Preparation and swelling behavior of macroporous poly (acrylamide-co-sodium methacrylate) superabsorbent hydrogels, J. Appl. Polym. Sci., 101 (2006) 3202–3214.
  16. P.S.K. Murthy, Y.M. Mohan, J. Sreeramulu, K.M. Raju, Semi- IPNs of starch and poly(acrylamide-co-sodium methacrylate): Preparation, swelling and diffusion characteristics evaluation, React. Funct. Polym., 66 (2006) 1482–1493.
  17. B.K. Tan, Y.C. Ching, S.C. Poh, L.C. Abdullah, S.N. Gan, A review of natural fiber reinforced poly(vinyl alcohol) based composites: application and opportunity, Polymers, 7 (2015), 2205–2222.
  18. H. Hosseinzadeh, S. Zoroufi, G.R. Mahdavinia, Study on adsorption of cationic dye on novel kappa-carrageenan/poly (vinyl alcohol)/montmorillonite nanocomposite hydrogels, Polym. Bull., 72 (2015) 1339–1363.
  19. M.J. Kim, T.H. Oh, S.S. Han, S.W. Joo, H.Y. Jeon, D.W. Chang, Preparation of poly(vinyl alcohol)/silver-zeolite composite hydrogels by UV-Irradiation, Fiber. Polym., 15 (2014) 101–107.
  20. M. Pulat, H.İ. Özgündüz, Swelling behavior and morphologicalproperties of semi-IPN hydrogels based on ionic and non-ionic components, Bio-Med. Mater. Eng., 24 (2014) 1725–1733.
  21. M. Pulat, G.O. Akalın, N.D. Karahan, Lipase release through semi-interpenetrating polymer network hydrogels based onchitosan, acrylamide, and citraconic acid, Artif. Cell. Nanomed. Biotechnol., 42 (2014) 121–127.
  22. E. Karadağ, Ö.B. Üzüm, D. Saraydın, Swelling equilibria and dye adsorption studies of chemically crosslinked superabsorbent acrylamide/maleic acid hydrogels, Eur. Polym. J., 38 (2002) 2133–2141.
  23. E. Karadağ, Ö.B. Üzüm, S. Kundakcı, D. Saraydın, Polyelectrolyte CASA hydrogels for uptake of uranyl ions from aqueous solutions, J. Appl. Polym. Sci., 104 (2007) 200–204.
  24. S. Kundakcı, Ö.B. Üzüm, E. Karadağ, Swelling and dye sorption studies of acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid/bentonite highly swollen composite hydrogels, React. Funct. Polym., 68 (2008) 458–473.
  25. Ö.B. Üzüm, H.B. Durukan, S. Kundakcı, E. Karadağ, Water uptake and dye sorption studies of chemically crosslinked highly swollen novel ternary acrylamide based hydrogels including citraconic acid and sodium acrylate, Polym. Advan. Technol., 19 (2008) 775–784.
  26. T.E. Dudu, M. Sahiner, D. Alpaslan, S. Demirci, N. Aktas, Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels, J. Environ. Manage., 161 (2015) 243–251.
  27. E. Karadağ, S. Kundakcı, A novel polymeric adsorbent for water and dye uptake: acrylamide/sodium acrylate copolymers and semi-interpenetrating polymer networks composed of gelatin and/or PVA, Polym. Plast. Technol. Eng., 51 (2012) 1513–1523.
  28. E. Karadağ, S. Kundakcı, Water and dye uptake studies ofacrylamide/4-styrenesulfonic acid sodium salt copolymers and semi-interpenetrating polymer networks composed of gelatin and/or PVA, Adv. Polym. Tech., 32(S1) (2013) E531–E544.
  29. E. Karadağ, S. Kundakcı, Uranyl ion uptake properties of highly swollen AAm/SA/GEL/PVA semi IPNs as novel biosorbent, Polym. Plast. Technol. Eng., 55 (2016) 15–24.
  30. S. Rehman, M. Siddiq, H. Al-Lohedan, N. Aktas, M. Sahiner, S. Demirci, N. Sahiner, Fast removal of high quantities of toxic arsenate via cationic p(APTMACl) microgels, J. Environ. Manage., 166 (2016) 217–226.
  31. N. Sahiner, S. Demirci, M. Sahiner, S. Yilmaz, H. Al-Lohedan, The use of superporous p(3-acrylamidopropyl)trimethyl ammonium chloride cryogels for removal of toxic arsenate anions, J. Environ. Manage., 152 (2015) 66–74.
  32. S.C.N. Tang, I.M.C. Lo, M.S.H. Mak, Comparative study of the adsorption selectivity of Cr(VI) onto cationic hydrogels with different functional groups. Water Air Soil Poll., 223 (2012) 1713–1722.
  33. W. Yao, P. Rao, W. Zhang, L. Li, Y. Li, Preparation of thermo-sensitive magnetic cationic hydrogel for the adsorption of reactive red dye, J. Disper. Sci. Technol., 36 (2015) 714–722.
  34. E. Karadağ, B. Hasgül, S. Kundakcı, Ö.B. Üzüm, A study of polymer/clay hybrid composite sorbent-based AAm/SMA hydrogels and semi-IPNs composed of ı-carrageenan and montmorillonite for water and dye sorption, Adv. Polym. Tech., 33 (2014) 21432 (1–11).
  35. D. Saraydın, E. Karadağ, Binding of some dyes onto crosslinked (N-vinylpyrrolidone poly(N-vinylpyrrolidone), Polym. Bull., 44 (2000) 501–508.
  36. Ö.B. Üzüm, E. Karadağ, Behavior of semi-IPN hydrogels composed of PEG and AAm/SMA copolymers in swelling and uptakes of Janus Green B from aqueous solutions, J. Apply. Polym. Sci., 125 (2012) 3318–3328.
  37. Ö.B. Üzüm, E. Karadağ, Water and dye sorption studies of novel semi IPNs: acrylamide/4-styrenesulfonic acid sodium salt/PEG hydrogels, Polym. Eng. Sci., 53 (2013) 1262–1271.
  38. M.K. Krusic, N. Milosavljevic, A. Debeljkovic, Ö.B. Üzüm, E. Karadağ, Removal of Pb2+ ions from water by poly (acrylamide-co-sodium methacrylate) hydrogels, Water Air Soil Poll., 223 (2012) 4355–4368.
  39. W.E. Hennink, C.F. van Nostrum, Novel crosslinking methods to design hydrogels, Adv. Drug. Deliver. Rev., 54 (2002) 13–36.
  40. R. Dengre, M. Bajpai, S.K. Bajpai, Release of vitamin B12 from poly (N-vinyl-2-pyrrolidone)-crosslinked polyacrylamide hydrogels: a kinetic study, J. Apply. Polym. Sci., 76 (2000) 1706–1714.
  41. D. Saraydın, E. Karadağ, Y. Işıkver, N. Sahiner, O. Güven, The influence of preparation methods on the swelling and network properties of acrylamide hydrogels with crosslinkers, J. Macromol. Sci. A., 41 (2004) 419–431.
  42. J. Wei, X. Liu, S. Xu, Adsorption behaviors of ammonium nitrogen by an amphoteric hydrogel, Desal. Wat. Treat., 57 (2016) 5753–5759.
  43. H. Hosseinzadeh, N. Khoshnood, Removal of cationic dyes by poly (AA-co-AMPS)/montmorillonite nanocomposite hydrogel, Desal. Wat. Treat., 57 (2016) 6372–6383.
  44. Ö.B. Üzüm, E. Karadağ, Dye sorption and water uptake properties of crosslinked acrylamide/sodium methacrylate copolymers and semi-interpenetrating polymer networks composed of PEG, Separ. Sci. Technol., 46 (2011) 489–499.
  45. N. Sahiner, D. Saraydın, E. Karadağ, O. Güven, Swelling and dye adsorption properties of radiation induced N-vinyl-2-pyrrolidone/acrylonitrile hydrogels, Polym. Bull., 41 (1998) 371–378.