High resolution 13C NMR studies for crystalline and liquid crystalline phases of PB-18 polyester composed of 4,4'-dihydroxybiphenyl and OCTADECANEDIOIC ACID (cas 871-70-5)
-
Add time:07/14/2019 Source:sciencedirect.com
Main-chain liquid crystalline PB-18 polyester composed of 4,4'-dihydroxybiphenyl and octadecanedioic acid forms two distinct crystalline phases, K1 and K2, and smectic H (SH) phase in the order of increasing temperature. The detailed structures of the three phases were studied by 13C solid-state NMR spectroscopy with variable temperature accessories. With a comparison of the observed 13C chemical shifts to the calculated 13C NMR shieldings by FPT-INDO method, the conformations of the mesogenic moiety and alkylene spacer are discussed among these three phases.
We also recommend Trading Suppliers and Manufacturers of OCTADECANEDIOIC ACID (cas 871-70-5). Pls Click Website Link as below: cas 871-70-5 suppliers
Prev:Selective conversion of stearic acid into high-added value OCTADECANEDIOIC ACID (cas 871-70-5) using air and transition metal acetate bromide catalyst: Kinetics, pathway and process optimization
Next:Synthesis and study of novel biodegradable oligo(ester amide)s based on sebacic acid, OCTADECANEDIOIC ACID (cas 871-70-5), 1,6-hexanediamine and ɛ-caprolactone: 2) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- α-lipoic acid regulate growth, antioxidant status and lipid metabolism of Chinese mitten crab Eriocheir sinensis: Optimum supplement level and metabonomics response07/17/2019
- Infrared study of adsorption in situ at the liquid-solid interface. V. Adsorption of octadecanol, octadecylamine, and OCTADECANEDIOIC ACID (cas 871-70-5) on silica, and a criterion for considering competitive adsorption07/16/2019
- Synthesis and study of novel biodegradable oligo(ester amide)s based on sebacic acid, OCTADECANEDIOIC ACID (cas 871-70-5), 1,6-hexanediamine and ɛ-caprolactone: 207/15/2019
- Selective conversion of stearic acid into high-added value OCTADECANEDIOIC ACID (cas 871-70-5) using air and transition metal acetate bromide catalyst: Kinetics, pathway and process optimization07/13/2019
-
Health and Chemical more >