5/17/2023 0 Comments Molar mass of co![]() For instance, nitroxide-mediated radical polymerization (NMP) is effective in the polymerization of styrenics, dienes, vinyl acetate, acrylamides, and others if unimolecular NMP with the so-called ‘BlockBuilder® MA' (SG1-MA) controller is used. It has been demonstrated in the last three decades that highly defined polymer microstructures can be obtained by using reversible deactivation radical polymerization (RDRP) techniques. It was observed that increasing pressure increases polymerization rate without significantly affecting molar mass development. The effect of pressure on monomer conversion and molar mass development in the polymerization of styrene (Sty) using benzoyl peroxide (BPO) and 2,2,6,6-Tetramethylpiperidinyl-1-oxyl (TEMPO) at 120☌ and 300–500 bar is studied. Pure and binary PC-SAFT interaction parameters are estimated from liquid–liquid equilibrium (LLE) and liquid–vapour equilibrium (LVE) experimental data at 60 to 129☌. The perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state is used to estimate the number of stable phases present at equilibrium in the reaction mixture, critical number average chain length at which polymer particles are formed, and monomer concentration in each phase. ![]() The method of moments is used for molar mass development. A mathematical model for polymerization kinetics and molar mass development in the nitroxide-mediated polymerization (NMP) of vinyl monomers in supercritical carbon dioxide (scCO 2) has been developed. ![]()
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