New polymer syntheses part: 54 novel conducting polymers and copolymers based on 4‐Teriary butyl‐cyclohexanone moiety in the main chain

Abstract

A new interesting class of conducting polymer and copolymers based on 4-teriary butyl-cyclohexanone in the main chain has been synthesized by solution polycodensation of terephthalaldehyde with 4-teriary butylcyclohexanone and/or cycloalkanone derivatives. The model compound I was synthesized from the 4-teriary butyl-cyclohexanone with benzaldehyde, and its structure was confirmed by elemental and spectral analyses. The resulting polymer and copolymers were characterized by elemental and spectral analyses including Fourier transform infrared spectrometer (FT-IR) and nuclear magnetic resonance ( 1 H-NMR), beside solubility and viscometry measurements. The thermal properties of those polymer and copolymers were evaluated by thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) measurements and correlated to their structural units. X-ray analysis showed that it has some degree of crystallinity in the region 2y ¼ 5-60. The UV-visible spectra of some selected polymers were measured in dimethyl sulfoxide (DMSO) solution and showed absorption bands in the range 253-398 nm, due to n-p* and p-p* transition. The morphological properties of selected examples were tested by scanning electron microscope (SEM). Moreover, the electrical conductivities and the doping with iodine were tested.

Viscometric Study of Bis(cinnamaldehyde) and Their Schiff Base Polymers in DMF and THF Solution at 30 ºC

“…Various mathematical equations are used in literature for calculating the intrinsic viscosity [η] of a polymeric solution, by graphic extrapolation (eqn. [1][2][3][4] and from a single point viscometry measurement of dilute solution (eqn. [5][6].…”

“…Characterization of this polymer has been done extensively by techniques like infrared spectroscopy (FTIR), ultraviolet/visible spectroscopy (U/V spectroscopy) and nuclear magnetic resonance (NMR). The thermal analysis as well viscosity measurement was observed from these derived Schiff base polymers 2,3 . The solubility of bis(cinnamaldehyde) and their Schiff base polymeric solutions were taken in highly polar solvents (DMF/THF) at 30 ºC 4 , to investigate viscometric study by dilute solution viscometry (DSV) method.…”

Synthesis and Characterization of Liquid Crystalline Polyesters Containing α,β-unsaturated Ketone Moiety in the Main Chain Derived from 2,6-bis(4-hydroxybenzylidene)cyclohexanone

“…However, LC polyesters have not been receiving the deserved focus and attention. After performing extensive work on these polymers, Kamal I Aly and coworkers [15][16][17], observed that the main advantages of benzylidene polyesters are lower melting temperatures, broader mesophase stability range and higher solubility. A pioneering work by Aminabhavi et al [18,19] and Percec et al [20,21] in the field of liquid crystalline polyethers and polyesters covers many aspects related to this field.…”

New Polymer Syntheses Part: 55#. Novel Conducting Arylidene Polymers and Copolymers Based on Methyl-Cyclohexanone Moiety

“…As a continuation of the work reported in the literature concerning the variable studies on the synthesis and properties of different new polymers based on diarylidenecycloalkanones possessing an interesting properties, attractive morphology, higher thermal stability, liquid crystalline behavior, corrosion protection, conducting properties, antimicrobial activity and many other properties, which have been presented in the literature [11][12][13][14][15][16][17][18]. Furthermore, different arylidene conjugated polymers, copolymers and terpolymers were synthesized and studied [19][20][21]. In this research work we present a route for the synthesis and characterization of some new arylidene polymers, and copolymers containing methyl-cyclohexanone moiety in the polymer backbone.…”