.pca / Peg Block Copolymer Synthesis And Properties Of,

Although the increasing rate of the produce of polyamide fibers in the world iss1ackening and the proportion to synthetic fibers is declining year after yeaT, there willbe a deve1opment in China. The research on differential polyamide fibers is important toincrease their qua1ity and diversification and to occupy the market. Antistatic po1yamideflber is an important tyPe of them. On the basis of the discuss of the produce and harmof static, the afltistatic methods of synthetic fibers are summarized.A series of PCA/PEG block polymers are synthesized by Q, to -biscarboxypolycaProlactam and polyethylene glycol. The research on the degree ofpolymerizationshow the optimal reaction conditions are timef2h, temperature: 280I5OC, catalyzerTBTf0.35%. The highest relative viscidity of PCA/PEG is 1.86 and the lowest rate ofextraction in boiling water is 1 .45%.The structure and properties of PCA/PEG are researched. The IR spectrogramindicate PCA/PEG are block polymers connected with ester bonds a-nd the rate ofextraction in boiling water show they are not simple mixtures. The TG of PCA/PEGshow the block po1ymers are thermal stability in the ra-nge of processing temPerature ofPA6.The volume conductivity of PCA/PEG decreased by 5~6 orders of magnitUde tothe lowest 1.7 X l0' Q. cm. They are no apparent changes when washed by water 10times, which indicate the lasting antistatic property The DTA,Xan and SEM figures ofPCA/PEG a11 show that the crystalline and mixed properties are harmed by the increaseof PEG.The small test of PCA/PEG are researched. The relative viscidity of copolymersincreased because of the blend ability of high pressure reactor. The reaction process andequipments of continued middle test are pre1iminarily designed.