CROSSLINKING OF CELLULOSICS BY HIGH ENERGY RADIATION

Journal Article · Mon Aug 01 04:00:00 EDT 1960 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1960.1204514628· OSTI ID:4130896

Leavitt, F C

In studies of high-energy radiation effects on cellulosic derivatives in aqueous solution, crosslinking was observed which had not been mentioned in earlier reports on radioinduced degradation of cellulosic polymers. The conditions for crosslinking of cellulosics were studied for nonionic water- soluble cellulose derivatives; viscosity and radiation dose rate were found to have a strong effect on the crosslinking reaction. If the irradiated solution is highly viscous, degradation predominates and the viscosity decreases to a critical value, at which point crosslinking and gelation begin to take place. At extremely low viscosities, the polymer concentration is the significant factor, and degradation occurs again. The effect of the dose rate is also examined. A crosslinking mechanism is proposed in which radiation produces hydroxyl radicals which abstract hydrogen atoms from the anhydroglucose rings, resulting in polymeric free radicals which then crosslink. (D.L.C.)

• Research Organization: Dow Chemical Co., Framingham, Mass.
• NSA Number: NSA-15-002664
• OSTI ID: 4130896
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 45
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMS
CELLULOSE
CHEMISTRY
COLLOIDS
CROSS-LINKING
DECOMPOSITION
FREE RADICALS
GELATION
HYDROGEN
HYDROXIDES
INDUCTION
POLYMERS
RADIATION EFFECTS
SOLUTIONS
VISCOSITY
WATER