Akrilamid ve 2-akrilamido-2-metilpropan sülfanik asit anyonik hidrojellerin suda ve tuz çözeltilerinde şişme özelliklerinin incelenmesi
Studies of swelling properties of 2- acrylamido - 2- methylpropanesulfonlc acid and acryamide hydrogels in water and in aqueous salt solutions
- Tez No: 67062
- Danışmanlar: PROF. DR. OĞUZ OKAY
- Tez Türü: Yüksek Lisans
- Konular: Kimya, Chemistry
- Anahtar Kelimeler: Polimer jelleri, hidrojel, 2-akrilamido -2- metilpropan sülfonik asit poliakrilamid, şişme, iyonik jel, şişme teorisi
- Yıl: 1997
- Dil: Türkçe
- Üniversite: Kocaeli Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Kimya Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 92
Özet
AKRİLAMİD VE 2-AKRİLAMİDO -2- METİLPROPAN SULFONİK ASİT ANYONİK HİDROJELLERİNİN SUDA VE TUZ ÇÖZELTİLERİNDE ŞİŞME ÖZELLİKLERİNİN İNCELENMESİ SAFİYE BOZKURT SARIIŞIK
Özet (Çeviri)
SAFİYE BOZKURT SARHŞIK Keywords : Polymer gels, hydrogels, 2- acrylamido -2- methylpropanesulfonik acid, acrylamide, swelling, theory of swelling equilibrium. Abstract: In this work, equilibrium swelling ratio of ionic and non-ionic polyacrylamide (PAAm) hydrogels in water and in aqueous NaCl solutions ranging in concentration from 10"5 M to 1 M was studied. 2-acrylamido -2- methylpropane sulfonic acid (AMPS) was used as the ionic comonomer in the gel synthesis. Hydrogels were prepared by free- radical crosslinking copolymerization of aqueous solutions containing AMPS of varying concentration between 0 and 80 mol %, acrylamide (AAm), N,N' - methylenbisacrylamide (BAAm) as the crosslinker and ammonium persulfat (APS) / N,N,N',N' -tetra methylethylenediamine (TEMED) as the initiator system. The weight swelling ratios qw of hydrogels were measured and the volume swelling ratio qv was calculated from qw. Experimental results showed that the volume swelling ratio of hydrogels increases, as the amount of AMPS used in the gel synthesis increases, but it decreases as the NaCl concentration in solution increases. However, volume swelling ratio of non- ionic gels is independent on the salt concentration in the outer solution. The number of repead units between two crosslink points in the hydrogels N was calculated from the swelling ratio of hydrogels in water and this value was compared with that calculated from the amount of the crosslinker used in the gel synthesis Nchem. Calculation results indicate that about 96 % of the crosslinker BAAm was used in cyclization. Experimental swelling data of hydrogels in water and in aqueous salt solutions were compared with the prediction of the Flory - Huggins theory of swelling equilibrium. Comparison results showed relatively good agreement between theory and experiment.
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