Atomic Force and Electron Scanning Microscopy of Silicone Composites

Abstract

The conclusions of direct numerical simulation obtained earlier, within the cluster quantumchemical approximation, are used in experimental investigations of polydimethylsiloxane composites with schungit or silica. The surface structure of these composites by atomic force and scanning electron microscopy was studied. Correlation of the distribution of micro-and nanodimensional fillers in the polymer matrix with the physical-mechanical properties of the composites was established.

Investigation of the asymmetric hollow fiber membranes structure using an atomic force microscopy

“…Gas-dynamic qualitative and quantitative parameters of the membrane apparatuses were measured on the operating bench. To study the wall structure asymmetry and the outer diffusion layer thickness of the obtained membranes, was used an atomic force microscope EasyScan AFM (Nanosurf, Switzerland) operating in the contact mode in air at room temperature [14]. The AFM was protected from external excitations using a dynamic anti-vibration stage TS-150 (Fabrik am Weiher, Switzerland).…”

“…The asymmetric hollow fibers allowing to obtain gas target components find applications in the aerospace industry, storage of fruit and vegetable products in a controlled gas environment, breathing mixture creation in medicine, replacing oxygen pillows, patients treatment by interval hypoxia (including "mountain air"), hydrogen separation after methane conversion, helium extraction from natural gas, regeneration of catalysts, etc. The polyphenylene oxide (PPO) choice as a modifiable membrane material is related to the increased interest in membrane technology, including direct industrial applications [8][9][10][11][12][13][14]. PPO is a glassy polymer with glass transition temperature ranging from 212 to 218 •C.…”