Optimization of Atom Transfer Radical Copolymerization of Allyl Butyl Ether with Acrylonitrile

Abstract

ABSTRACT:The optimization of atom transfer radical polymerization (ATRP) conditions for the copolymerization of allyl butyl ether with acrylonitrile has been carried out with the aim of achieving control over molecular parameters. The influence of solvents, initiator concentration and in-feed molar compositions on the rate of copolymerization was also investigated. The molecular weight data as well as kinetic studies suggested conventional ATRP behavior of the copolymerization of acrylonitrile and allyl butyl ether. The variation of copolymer composition (F C ) with conversion indicated towards the synthesis of copolymers having significant changes in composition with conversion. The copolymer compositions obtained from 1 H NMR spectra were utilized to determine the reactivity ratios. With the help of DEPT (Distortionless Enhancement by Polarization Transfer) and 2D HSQC (Heteronuclear Single Quantum Coherence) NMR spectra, complete spectral assignments of 1 H and 13 C{

Transition Metal-Catalyzed Living Radical Polymerization: Toward Perfection in Catalysis and Precision Polymer Synthesis

“…Functionalization of olefin-containing random copolymers is achieved with functionalized polar monomers or functionalized nonpolar olefins in copper- or iron-catalyzed living radical copolymerization (Figure ), including the functionalized nonpolar olefins, DMAA (OR- 20 , 21 ), PEGA (FM- 16 ) (OR- 22 , OR- 29 ), acrylonitrile (AN) (OR- 28 ), the functionalized nonpolar olefins fluorine (OR- 17 to OR- 19 ), trimethyl- or acetyl-protected groups (OR- 23 , 24 ), hydroxy- or acetyl-capped poly(ethylene glycol) (OR- 25 , 26 ), and ether (OR- 27 , 28 ). , …”

Immobilization of Trametes versicolor laccase on different PGMA‐based polymeric microspheres using response surface methodology: Optimization of conditions

“…The assignment of various resonance peaks due to different carbon atoms was made by comparison with spectra of analogous chemical groups taken from the literature. [30][31][32] The a-CH 3 groups, quaternary, and carbonyl carbons present complex patterns due to their sensibility to configurational changes. Nevertheless, because of peak overlap in the spectrum, the elucidation of these three carbon resonances was not possible.…”

Insights on the Atmospheric-Pressure Plasma-Induced Free-Radical Polymerization of Allyl Ether Cyclic Carbonate Liquid Layers

“…The latter 13 C shift, labeled as d, resembles the peak signal for the A6CC monomer, confirming that the 2D HSQC cross-peak 1 H 3.32 ppm- 13 C 72.0 ppm is linked to the methoxy group from the former allyl group. For the polymerized A6CCs, the peak was denoted as d' [34]. The signal d' formed long-distance decoupling with the signal labeled as f + 1 (2D HSQC, 1 H 1.55 ppm 13 C 72.0 ppm), evidencing the ether link in between the cyclic structure and the polymeric backbone.…”