超支化聚合物在炭黑表面接枝改性的研究

Surface Modification of Carbon Black Grafted with Hyperbranched Poly(Amine-Ester)s

以羟甲基化炭黑为中心核,利用其活性羟基与AB3型单体进行缩聚反应,在炭黑的表面原位接枝超支化聚合物。实验表明,炭黑表面接枝超支化聚合物后,粒子间聚集作用减弱,在乙醇中的分散性和稳定性提高,且对PVC有很好的增强、增韧作用。

Carbon black was grafted by hyperbranched poly （amide-ester）s through one-spot polycondensation with AB3 monomers. The results of FT-IR and DTG indicate that hyperbranched poly（amide-ester） s is successfully grafted on the surface of carbon black. The carbon black grafted with hyperbranched poly（amide-ester）s has well dispersion in the ethanol than that unmodified. The mechanical properties of PVC is improved greatly with the addition of carbon black grafted with hyperbranched poly（amide-ester） s.