Abstract: The amide exchange reaction is a kind of very important reactions that exist in the the nylon blending systems and its reaction degree has the extremely important influence to the polyblend performance. This article has established the basical model of Monte Carlo kinetics of amide exchange reaction , and has carried on the simulation by this model with the PA6/PA6IcoT response blending system under the different operating condition when the time change.This simulation result shows that the increase of temperature is beneficial to accelerate amid's exchange reaction. But even if so, regarding the PA6/PA6IcoT system, we must join the appropriate catalyst for promoting the amide exchange reaction if hoped that realizes the molecular size mix in a short time. The varation trend of the number average sequence length is much faster,relative to the varity of amide bond mole fraction with the variation of amide exchange reaction time. the PA6 sequence length may reduce several magnitudes only when need undergo dozens of minutes' reaction.In addition, the polyblend composition proportion also has the tremendous influence to the amide exchange reactions. The two kinds of component amido linkage's initial proportion in the system is more closer, the more obtain the final block copolymer.
Keywords: Polyamide; Transamidation; Monte Carlo; Modeling
