2.1.8.2. Absorbency Under Load (AUL) - BADA

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In detail, Figure 36 shows the comparison swelling rate in deionized water between AP, IZP and polyacrylate (ALCOGUM L520) during 24 h at 25±2° C. Swelling (g/g) 100 75 50 25 0 0 5 10 15 20 25 Time (h) 0000000 0 Figure 35. Kinetics of swelling of IZP-hydrogel at 25 o C Sw elling (g/ g) 300 200 100 0 1 min 5 min 30 min 1h 2 h 6 h 24h 0.016 0.083 0.5 1 2 6 24 Time IZP-Hydrogel AP-Hydrogel Polyacrylate(L-520) Figure 36. Comparison of rate of swelling in deionized water between AP-hydrogel, IZP-hydrogel and L520 at 25 o C 63
3.7.Ⅱ. Effect of Ionic strength The swelling ratio is concerned to the characteristics of the type of medium solution such as charged number, Ionic strength and concentration of the Ionic solution, as well as the character of protein- based hydrogel structure, the number of hydrophilic groups, the elasticity of the network and the extent of crosslinking density. Generally, the swelling ratio of hydrogels decrease with increasing of NaCl concentration. Figure 37 shows the swelling behavior of EDTAD-IZP hydrogel was sensitive to ionic strength which is usual in the polyanionic hydrogels.The EDTAD-IZP hydrogel showed a mild decrease in water uptake from 62 g water/g dry gel in deionized water to 42 g water/g dry gel when it was exposed to a 0.15M NaCl solution after 1 h at 25±2° C. In this experimental work, absorbency of EDTAD-IZP hydrogel was also estimated in synthetic urine. The EDTAD-IZP hydrogel water uptake from 62 g water/g dry gel in deionized water decreased to 37 g water/g dry gel when it was exposed to synthetic urine after 1 h at 25±2°C (Table 5, Fig 38). … swelling (g/g) 80 60 40 20 0 0 0.05 0.1 0.15 0.2 0.25 NaCl Concentration (mol/L) Modified IZP-hydrogel Unmodified IZP-hydrogel Figure 37. Effect of various NaCl concentrations on swelling behavior of EDTAD-IZP hydrogel and unmodified IZP- hydrogel 64
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BIOSUPERABSORBENT FROM PROTEINS Sar
Page 4 and 5:
ACKNOWLEDGMENTS We would like to ap
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CONTENTS ACKNOWLEDGMENTS ………
Page 8 and 9:
3.4.Ⅰ. Kinetic of Swelling……
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22- Effect of Glutaraldehyde concen
Page 12 and 13:
1 INTRODUCTION Superabsorbent hydro
Page 14 and 15:
1.1. Definition of Superabsorbency
Page 16 and 17:
1.3.1. Protein Structure Protein fo
Page 18 and 19:
2- Side chains of polar residues wi
Page 20 and 21:
1.3.3. Ovalbumin , Good Source for
Page 22 and 23:
One of the paper preparation proces
Page 24 and 25: ……………………………
Page 26 and 27: 1.5. The Thermodynamic of Protein F
Page 28 and 29: In order to chemical modification o
Page 30 and 31: The swollen crosslinked polymer may
Page 32 and 33: 1.7.1.3. Crosslinking by UV-Irradia
Page 34 and 35: 1.7.2.1. Non-specific Crosslinking
Page 36 and 37: 1.8. Determination the Degree of cr
Page 38 and 39: These preparations contain consider
Page 40 and 41: MATERIALS AND METHODS 2.1. Method o
Page 42 and 43: ased on the solubility of the prote
Page 44 and 45: 2.1.2.2. Determination of Zygomycet
Page 46 and 47: 2.1.3. Modification of proteins Alb
Page 48 and 49: The first step was weighted a 30 mg
Page 50 and 51: 2.1.8.1. Centrifuge Retention Capac
Page 52 and 53: Figure 17. Schematic of device used
Page 54 and 55: Results showed the effect of ethano
Page 56 and 57: Preparation of protein solution (1%
Page 58 and 59: PART Ⅰ ALBUMIN SUPERABSORBENT HYD
Page 60 and 61: 3.3.Ⅰ. Effect of Buffer solution
Page 62 and 63: Swelling (g/g) 300 200 100 0 1 0.01
Page 64 and 65: Swelling (g /g ) 350 300 250 200 15
Page 66 and 67: 3.8.Ⅰ. Effect of Temperature Prot
Page 68 and 69: In this rearrangement the R─ grou
Page 70 and 71: Calculations As a result by solving
Page 72 and 73: In the present work, increasing the
Page 76 and 77: Sample Table 5. Comparison of swell
Page 78 and 79: The IZP-hydrogel compared with unmo
Page 80 and 81: According to our results, the swell
Page 82 and 83: REFERENCES 1- Fredric L.Buchholz &
Page 84 and 85: 32- Alexander,. J, Colloid chemistr
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2.1.8.2. Absorbency Under Load (AUL) - BADA

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