Thermal polymerization of acrylamide in the solid state
The role of imperfections in thermal polymerization of acrylamide in the solid state was studied. The polymer yield and the degree of polymerization are highly dependent on the particle size and on the pressure to which the monomer is subjected prior to polymerization reaction. There is an enhancement in the rate of polymerization in air unlike in the case of radiation-induced polymerization. Thermal polymerization of acrylamide in pelletized form results in the formation of water-soluble linear polymer and water-insoluble cross-linked product with the evolution of ammonia. The activation energy (E) values obtained in the present investigation reveal that basically there are two processes taking place, one with E=34-36 kcal/mole, corresponding to the initiation process, and the other with E=19 +/- 3 kcal/mole for the propagation process.
- Research Organization:
- Indian Inst. of Science, Bangalore
- OSTI ID:
- 5628092
- Journal Information:
- J. Solid State Chem.; (United States), Vol. 46:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACRYLAMIDE
POLYMERIZATION
ACTIVATION ENERGY
CRYSTAL STRUCTURE
MONOMERS
POLYAMIDES
AMIDES
CHEMICAL REACTIONS
ENERGY
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
360401* - Polymers & Plastics- Preparation & Fabrication- (-1987)
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)