Relationship between functional groups and dielectric properties of hybrid films

POLY 170

Gang Xie, xiegang2007acs@126.com, School of Chemical Engineering and Materials, Heilongjiang University, Harbin, 150080, China and Dezhi Sun, sundezhihit@hit.edu.cn, College of Environmental Science & Engineering, Beijing Forestry University, No. 35 Qinghua East Road, Haidian District, Beijing, 100083, China.
Three hybrid materials (MST, VST and GST) based on (3-methacryloxypropyl)-silsesquioxane (MS), Vinyl-silsesquioxane (VS), (3-glycidoxypropyl)-silsesquioxane (GS) and modified with tetraethoxysilicate (TEOS) were prepared using hydrolytic condensation. The dielectric constant (εr) testing profiles of MST, VST and GST with 0, 5, 10, 15, 20 and 25 wt-% TEOS can be divided into three frequency ranges (0.10-21.54, 21.54-100.00 and 100.00-1000.00 KHz). MST has the lowest εr due to the larger-sized methacryloxy groups and GST has the highest εr due to the ring-opening of the epoxy groups. The influence of the TEOS fractions of MST, GST and VST on the εr values and surface morphology was also analyzed.
 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007