Y. Shibasaki et al., MONOLAYERS AND MULTILAYERS OF NEW COMB-LIKE POLYMERS CONTAINING TERMINAL VINYL GROUPS IN THE SIDE-CHAINS, Thin solid films, 244(1-2), 1994, pp. 732-735
A new type of comb-like polymer which can lead to cross-polymerization
was synthesized by modification of polyallylamine with 10-undecenoic
acid containing a terminal vinyl group. Monolayer behaviour and struct
ure of Langmuir-Blodgett (LB) films were studied for poly(allylamine-c
o-10-undecenoates) with different corepeat unit ratios. With increasin
g the corepeat unit ratio, the stability of monolayers was improved. M
onolayers of slightly modified polymers (25% and 50%) were deposited o
n solid plates as non-alternating Z-type multilayers at low temperatur
es and high dipping speeds. In contrast, monolayers of highly modified
polymers (70% and 80%) were deposited as alternating Y-type multilaye
rs at higher temperatures and lower dipping speeds. It has been found
that the cross-polymerization of these comb-like polymers with a high
content of vinyl groups occurs easily in the LB films as a result of U
V irradiation. Thermal stability and solvent resistivity of the films
were enhanced owing to the two-dimensional network structure formed by
the cross-polymerization.