Accelerated radiation polymerization of vinyl-divinyl comonomer systems. IV. Influence of molecular bridge length in divinyl monomer

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · J. Radiat. Curing; (United States)

OSTI ID:5377923

Micko, M M ^[1]; Paszner, L

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1. Univ. of Alberta, Edmonton

Acceleration in radiation polymerization of vinyl-divinyl comonomer systems via gel-effect (Ge) in crosslinked networks is related to the chemical structure of the crosslinking agents, in particular to their molecular bridge length. The relative acceleration ability of divinyl monomer (DVM) compounds studied increased with DVM molecular bridge length in the order: ethylene glycol dimethacrylate (EGDMA) < diethylene glycol dimethacrylate (DEGDMA) < triethyleneglycol dimethacrylate (TREGDMA) < tetraethylene glycol dimethacrylate (TEGDMA) = 1.00:1.36:1.64:2.18. The half-time concentration values for EGDMA, DEGDMA, TrEGDMA and TEGDMA were approximately 7, 5, 4, and 3% (vol/vol), respectively. Substantial decrease in curing time (t/sub MAX/) was obtained with up to 10% DVM in the respective comonomer mixtures. The MMA-TEGDMA comonomer system was found to be the most suitable and economically attractive. It represents a well balanced compromise of improved polymerization parameters and copolymer properties, suitable for wood-polymer composite products. 4 figures, 4 tables.

• OSTI ID: 5377923
• Journal Information: J. Radiat. Curing; (United States), Journal Name: J. Radiat. Curing; (United States) Vol. 5:4; ISSN JRDCA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
CARBOXYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
COMPOSITE MATERIALS
COPOLYMERS
CROSS-LINKING
ESTERS
MATERIALS
METHACRYLIC ACID ESTERS
METHYL METHACRYLATE
MONOMERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERIZATION
POLYMERS
RADIATION CHEMISTRY
RADIATION EFFECTS
VINYL MONOMERS
WOOD-PLASTIC COMPOSITES