Novel macromonomer as a reactive stabilizer in the dispersion polymerization of methylmethacrylate
| Autor: | Sun Hye Yang, Sang Eun Shim, Kangseok Lee, Jung-Min Lee, Hui Je Lee, Hye Jun Jung, Soon Ja Choe |
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| Rok vydání: | 2004 |
| Předmět: |
Dispersion polymerization
Materials science Polymers and Plastics General Chemical Engineering Organic Chemistry Dispersity technology industry and agriculture macromolecular substances Macromonomer Polymer engineering chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Molar mass distribution Glass transition Ethylene glycol Polyurethane |
| Zdroj: | Macromolecular Research. 12:512-518 |
| ISSN: | 2092-7673 1598-5032 |
| DOI: | 10.1007/bf03218436 |
| Popis: | We have synthesized a novel macromonomer of vinyl-terminated bifunctional polyurethane having a molecular weight of 37,000 g/mol and successfully applied it to the dispersion polymerization of methylmethacrylate (MMA). We verified the presence of the vinyl terminal group and the macromonomer grafted onto the poly(ethylene glycol) (PEG) block in the PMMA particles by using1H and13C NMR spectroscopies. Monodisperse PMMA microspheres that have good uniformity of 1.01 were prepared at 20 wt% macromonomer content; we investigated the characteristics of the PMMA particles in terms of their molecular weight, molecular weight distribution, size of the particles, thermal properties, and glass transition temperature. We have found that the synthesized polyurethane macromonomer is an effective stabilizer. |
| Databáze: | OpenAIRE |
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