Abstract
Macroporous beads containing N-vinyl-tertbutyl carbamate (NVTBC) as the main component and styrene, methyl-methacrylate or methacrylic acid as comonomer have been prepared by suspension polymerization using divinylbenzene or ethyleneglycol dimethacrylate as cross-linking agent. Heptane was used as the porogenic agent. After solvolysis, parent copolymers containing vinylamine instead of NVTBC were obtained. These beads were characterized by chemical composition and extent of solvolysis. Their textural features (specific area and porous volume) were also determined by nitrogen adsorption-desorption isotherms and mercury porosimetry. The influences of the following parameters on the chemical and physical features of the beads were studied and discussed: nature and concentration of the cross-linking agent, concentration of the porogenic agent, nature of the comonomer.
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