Radiation grafting of acrylic and methacrylic acid to cellulose fibers to impart high water sorbency
Acrylic and methacrylic acids have been directly grafted to rayon and cotton using the preirradiation technique with /sup 60/ Co gamma rays. The rate of grafting increased with increasing temperature and monomer concentration, as did the final degree of grafting. The amount and rate of grafting also increased with the total irradiation dose but tended to level off at higher doses, in agreement with the leveling off of the radical content reported previously. Methacrylic acid grafted more and faster than acrylic acid to both rayon and cotton. Methacrylic acid grafted more with rayon than cotton, but acrylic acid gave somewhat similar yields with both fibers. The water abosrbency of the grafted fibers depended strongly on their posttreatment. Decrystallizing with 70% zinc chloride or with hot sodium hydroxidy developed supersorbency. The two treatments in succession, respectively, gave the highest values. Metacrylic acid brought about less sorbency than the corrsponding acrylic acid grafts. Useful levels of grafting and supersorbency could be readily and practically achieved by the methods described.
- Research Organization:
- North Carolina State Univ., Raleigh
- OSTI ID:
- 5279490
- Journal Information:
- J. Appl. Polym. Sci.; (United States), Vol. 25:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACRYLIC ACID
CHEMICAL RADIATION EFFECTS
SORPTIVE PROPERTIES
CELLULOSE
METHACRYLIC ACID
WATER
ABSORPTION
EXPERIMENTAL DATA
GAMMA RADIATION
GRAFT POLYMERS
ISOLATED VALUES
CARBOHYDRATES
CARBOXYLIC ACIDS
CHEMISTRY
DATA
DATA FORMS
ELECTROMAGNETIC RADIATION
HYDROGEN COMPOUNDS
INFORMATION
IONIZING RADIATIONS
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYSACCHARIDES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
SACCHARIDES
SURFACE PROPERTIES
400600* - Radiation Chemistry