Open AccessApplication of MMT modified by block copolymer in dental composite
Author(s) -
Uyen Thai Ngọc Nguyen
Publication year - 2015
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v18i3.834
Subject(s) - copolymer , materials science , montmorillonite , composite material , polymerization , composite number , fourier transform infrared spectroscopy , methyl methacrylate , flexural strength , methacrylate , radical polymerization , polymer chemistry , chemical engineering , polymer , engineering
Montmorillonite (MMT) of which the surface was modified with a block copolymer with crosslinkable units was incorporated into dental composites as nanofiller to improve dimensional and mechanical properties. A bifunctional block copolymer was prepared through controlled/‘‘living’’ radical polymerization technique. One block contained 2-isocyanatoethyl methacrylate and the other block contained poly(vinyl pyridine) units. The interaction of the 4VP units with the surface of MMT layers was examined by using X-ray diffraction spectroscopy (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed that the polymerization shrinkages of the composites decreased as well as the compressive and flexural strengths of the composites were also improved.