Mass spectroscopy transfer polymerization

ESI mass spectrometry ive mass spectrometry ESR spectroscopy set EPR spectroscopy ethyl acetate, chain transfer to 295 ethyl acrylate (EA) polymerizalion, transfer constants, to macromonomers 307 ethyl methacrylate (EMA) polymerization combination v.v disproportionation 255, 262 kinetic parameters 219 tacticity, solvent effects 428 thermodynamics 215 ethyl radicals... 

Dialkyl peroxides (continued) colorimetry, 707-8 flame ionization detection, 708 NMR spectroscopy, 708 titration methods, 707 UV-visible spectrophotometry, 707-8 enthalpies of reactions, 153-4 graft polymerization initiation, 706 hydroperoxide determination, 685 peroxide transfer synthesis, 824-5 stmctural characterization, 708-16 electrochemical analysis, 715-16 electron diffraction, 713 mass spectrometry, 714 NMR spectroscopy, 709-11 thermal analysis, 714-15 vibrational spectra, 713-14 X-ray crystallography, 711-13 synthesis... 

The principles of RAFT polymerization were applied to the polymerization of N-isopropylacrylamide (NIPAAm), carried out in the presence of the dithiocarbamates benzyl 1-pyrrolecarbodithioate or cumyl 1-pyrrolecarbodithioate as chain transfer agents in 1,4-dioxane at 60°C. A kinetic investigation using in situ FT-NIR spectroscopy showed very long induction periods, which depended on the nature and concentration of the chain transfer agent. The resulting polymers had polydispersity indices Mw/Mn <1.3 and were analyzed by MALDI-TOF mass spectrometry, GPC, NMR, and UV spectroscopy [111]. 

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