PROCESS FOR GRAFTING POLYMERS TO CELLULOSE SUBSTRATES
An improvement in the polymer-grafting of cellulose substrates by irradiation techniques is proposed. The improvement comprises swelling the substrate by incorporating therein at least 15% by weight of a watersoluble, non- polymerizable swelling agent for cellulose, and thereaftcr subjecting the substrate to ionizing radiation. A polymerizable ethylenically unsaturated monomer is then applied to the substrate and is polymerized in situ as a result of the action of the radiation. The polymerizable monomer may be in contact with the substrate during irradiation or may be applied afterward. The swelling agent is preferably a liquid but may be a vapor. It may be water itself, a non- polymerizable watersoluble acid, base, or salt, or an organic system such as glycerol or ZnCl/sub 2/-methanol. A minimum exposure of 0.001 watt-sec/cm/sup 2/ to ionizing radiation of 0.75 to 5 Mev is necessary. The swelling agent may be subsequently removed with essentially no loss of the graftings. (A.G.W.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-005407
- Assignee:
- E.I. du Pont de Nemours and Co.
- Patent Number(s):
- US 3101276
- OSTI ID:
- 4121620
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALCOHOLS
AMINES
CADMIUM IODIDES
CATIONS
CELLULOSE
CHEMICALS
CHEMISTRY
COMPOUNDS
COPPER COMPOUNDS
CYANIDES
DENSITY
DIAGRAMS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ETHANOL
ETHYLENE
EXPANSION
GLYCERIN
GRAFT POLYMERS
HEATING
HYDROXIDES
ION EXCHANGE
LABORATORY EQUIPMENT
LEAD NITRATES
MERCURY ALLOYS
MERCURY IODIDES
METHANOL
MOLECULES
PATENT
POLAROGRAPHY
POLYMERIZATION
POLYMERS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
RADIATION CHEMISTRY
RADIOISOTOPES
REDUCTION
RUBIDIUM IODIDES
SALTS
SODIUM COMPOUNDS
SODIUM IODIDES
SODIUM NITRATES
SOLUBILITY
SOLVENTS
TABLES
THALLIUM NITRATES
TRACER TECHNIQUES
WATER
ZI