Preparation of poly(methyl methacrylate)‐Silica nanoparticles via differential microemulsion polymerization and physical properties of <scp>NR</scp>/<scp>PMMA</scp>‐<scp>S</scp>i<scp>O</scp><sub>2</sub> hybrid membranes
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Polymer science on PMMA-silica nanoparticles and hybrid membranes; the object is a material.
The study investigates polymer nanoparticles and membrane properties, not research practice.
Materials science study of PMMA-silica nanoparticles and membranes; not about research itself.
Résumé
Poly(methy methacrylate) (PMMA)‐SiO 2 nanoparticles were prepared via differential microemulsion polymerization. The effects of silica loading, surfactant concentration, and initiator concentration on monomer conversion, particle size, particle size distribution, grafting efficiency, and silica encapsulation efficiency were investigated. A high monomer conversion of 99.9% and PMMA‐SiO 2 nanoparticles with a size range of 30 to 50 nm were obtained at a low surfactant concentration of 5.34 wt% based on monomer. PMMA‐SiO 2 nanoparticles showed spherical particles with a core‐shell morphology by TEM micrographs. A nanocomposite membrane from natural rubber (NR) and PMMA‐SiO 2 emulsion was studied for mechanical and thermal properties and pervaporation of water‐ethanol mixtures. PMMA‐SiO 2 nanoparticles which were uniformly dispersed in NR matrix, significantly enhanced mechanical properties and showed high water selectivity in permeate flux. Thus, the NR/PMMA‐SiO 2 hybrid membranes have great potential for pervaporation process in membrane applications. POLYM. ENG. SCI., 2017. © 2017 Society of Plastics Engineers
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La notice
- Revue
- Polymer Engineering and Science
- Thématique
- Membrane Separation and Gas Transport
- Domaine
- Engineering
- Établissements canadiens
- University of Waterloo
- Organismes subventionnaires
- Natural Sciences and Engineering Research Council of Canada
- Mots-clés
- Materials sciencePervaporationChemical engineeringMonomerNanoparticleMethyl methacrylateEmulsion polymerizationMicroemulsionMembranePolymerizationPolymer chemistryParticle sizeNanocompositePermeationPulmonary surfactantPolymerComposite materialNanotechnologyChemistry
- Résumé présent dans OpenAlex
- oui