Radiation-induced sol-gel transition of protein: Effects of metal ions on thermal property
The solid gelatin as the model protein, was irradiated with [sup 60]Co gamma rays in air at room temperature at dose rates of 6.0 x 10[sup 4] to 1.3 x 10[sup 5] rad/h. The irradiated solid gelatin was dissolved in distilled water or metal ion (Cu[sup 2][sup +] as CuSO[sub 4] of Fe[sup 2][sup +] as FeSO[sub 4]) solution at about 80 C. and held at 30 C. for 1 h. Then, the gelatin hydrosol was cooled at a rate of 0.2 C./min and the setting point measured. The heat energy required to associated cross-links of the gelatin hydrosol was calculated using the setting point given by the equation of Eldridge and Ferry. The changes in setting point of irradiated gelatin with and without metal ions (Cu[sup 2][sup +] and Fe[sup 2][sup +]) were studied with 3-10% gelatin and by the irradiation of 0, 10[sup 5], 10[sup 6], and 10[sup 7] rad.
- OSTI ID:
- 5711953
- Journal Information:
- Journal of Applied Polymer Science; (United States), Vol. 50:6; ISSN 0021-8995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PROTEINS
CHEMICAL RADIATION EFFECTS
CATIONS
CHEMICAL REACTION KINETICS
COBALT 60
COPPER SULFATES
CROSS-LINKING
GAMMA RADIATION
IRON SULFATES
THERMODYNAMIC PROPERTIES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHEMICAL REACTIONS
COBALT ISOTOPES
COPPER COMPOUNDS
ELECTROMAGNETIC RADIATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
IONS
IRON COMPOUNDS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERIZATION
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
REACTION KINETICS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YEARS LIVING RADIOISOT
400600* - Radiation Chemistry