| 초록 |
Although the high impact polystyrene (HIPS) is known and has long been used as the rubber-toughened polystyrene to improve the impact strength and toughness of polystyrene, the conventional HIPS should be modified to compete in performance with engineering plastics such as acrylonitrile-butadiene-styrene terpolymer. Glossy, transparent, chemical-resistant, high strength and flame-retardant grades are current issues in developing the high performance HIPS. An introduction of organoclay is one of the potential solutions to achieve chemical-resistant, high strength and flame-retardant grades. Nano-scale dispersion of organoclay is prerequisite for the preparation of nanocomposites distinguishing from the traditional composites composed of macro-fillers. However, the dispersion of silicate layers inside polymer matrix is not accomplished by the simple modification of pristine clay that usually shows hydrophilicity. In this study, a pristine montmorillonite is inonically exchanged with a surfactant having a reactive group to enhance the dispersion capability of silicate layers during the in-situ polymerization of HIPS. The X-ray diffraction peak of the nanocmoposites prepared with the organoclay having a reactive group confirms higher dispersion of silicate layers compared with the organoclay having the same alkyltallow chain except the reactive group. |
