Understanding copolymerisation kinetics for the design of functional copolymers via free radical polymerisation
| Autor: | Jonathan M. Millican, Lian R. Hutchings, Natasha A. Boulding |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Glycidyl methacrylate
Polymers and Plastics Chemistry Organic Chemistry Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Methacrylate 01 natural sciences Biochemistry 0104 chemical sciences chemistry.chemical_compound Monomer Polymerization Methacrylic acid Polymer chemistry Copolymer Methacrylamide Methyl methacrylate 0210 nano-technology |
| Zdroj: | Polymer chemistry, 2019, Vol.10(41), pp.5665-5675 [Peer Reviewed Journal] |
| ISSN: | 1759-9962 1759-9954 |
| Popis: | Determining the monomer sequence distribution of copolymers is important when correlating copolymer molecular structure (random, gradient etc.) to macroscopic/material properties. We report here the relative monomer reactivities for the copolymerisation of methyl methacrylate (MMA) with functional monomers – poly(ethylene glycol) methyl ether methacrylate (PEGMEM Mn 500 g mol−1), acetonide-protected dopamine methacrylamide (ADMA), methacrylic acid (MAA) and glycidyl methacrylate (GMA) – to provide information on monomer sequence distribution and compositional drift. Reactivity ratios were calculated, using non-linear least squares regression analysis, in the cases of the free radical copolymerisation of MMA with (i) PEGMEM (rMMA = 1.17 rPEGMEM = 0.62) and (ii) ADMA (rMMA = 2.21 rADMA = 0.17). Additionally, monomer feed depletion as a function of total monomer conversion was monitored by 1H NMR spectroscopy for a series of batch co- and terpolymerisations. This approach offers detailed insight into monomer compositional drift and copolymerisation kinetics. Such information provides a platform for the design of copolymers with specific desired properties e.g. adhesion, solubility or interfacial activity. |
| Databáze: | OpenAIRE |
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