In the present
paper, in situ ring opening anionic polymerization of laurolactam towards
polyamide 12 (PA12) was investigated, during reactive melt blending. The
reaction was taken place in an internal mixer, in the presence of sodium
caprolactam (catalyst), and toluene diisocyanate (activator).
The effect of
catalyst and activator contents on initiation time of the reaction and the residual monomer
was carried out in this study. Solvent
extraction method was used in order to remove the residual monomer. The
experimentation is further undergone to statistical analysis to extract the
absolute optimal values of activator- catalyst content in synthesized polyamide
12.
Two-factor design
in Response Surface Method (RMS) is suitably applied for validation analysis of
experimental data. The optimum content of catalyst and activator was obtained
2.53% and 1.15%, which offers the polyamide 12 with minimum residual monomer
equal to 1.26%.
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