Accession Number : ADA183507

Title :   Synthesis and Characterization of Liquid Crystalline Polyacrylates and Polymethacrylates Containing Benzyl Ether and Diphenyl Ethane Based Mesogens.

Descriptive Note : Technical rept.,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s) : Hsu,Chain S ; Percec,Virgil

PDF Url : ADA183507

Report Date : Jan 1985

Pagination or Media Count : 29

Abstract : The synthesis and radical polymerization of a novel series of acrylates and methacrylates containing p-cyanophyenyl)-2-(p-hydroxyphenyl) ethane groups attached to the polymerizable group through aliphatic spacers containing eleven and six methylenic units is described. The resulting polymers were characterized by differential scanning calorimetry and optical polarization microscopy. All polymers exhibited enantiotropic mesomorphism. Low molar mass compounds based on benzyl ether or diphenyl ethane units exhibit only monotropic or virtual transitions. This demonstrates that the polymer effect stabilizes mesophases obtained from mesogenic units which do not contain rigid interconnecting groups.

Descriptors :   *METHACRYLATES, *POLYMERS, *LIQUID CRYSTALS, *POLYACRYLATES, CALORIMETRY, SCANNING, BIPHENYL, ETHANES, ACRYLATES, MICROSCOPY, OPTICAL ANALYSIS, POLARIZATION, POLYMERIZATION, SYNTHESIS(CHEMISTRY), MESOMORPHIC COMPOUNDS, THERMOCHROMIC MATERIALS, POLAROGRAPHIC ANALYSIS, ROTATION(CHEMICAL BONDS), ANISOLE, NUCLEAR MAGNETIC RESONANCE, TRANSITION TEMPERATURE, CHROMATOGRAPHY

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE