Spherical Polyelectrolyte Brushes on Colloidal Poly(butadiene) Particles
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Gongsheng Li
Abstract
A novel method to prepare spherical polyelectrolyte brushes (SPB) on the surface of colloidal poly(butadiene) (PB) core without having to use initiators with C=C double bond to attach covalently on the core surface was reported. Making use of the abundant double bonds in PB, spherical poly(acrylic acid) (PAA) bushes were grown from PB core surface by direct thermo-initiated emulsion polymerization using KPS as initiator. The thickness of SPB increased significantly upon increasing pH and decreasing the ionic strength. The grafting density of SPB with PB core was estimated from the relationship between the brush thickness and ionic strength based on the modified Daoud-Cotton model. The grafting density of SPB prepared by thermo-initiated emulsion polymerization (0.122 nm-2) is higher that that of SPB by photo-emulsion polymerization (0.105 nm-2). Using SPB with PB core as nanoreactors, nickel and silver nanoparticles were prepared by reduction of Ni2+ and Ag+ absorbed inside SPB as counterions. Relatively high catalytic activities for the reduction of p-nitrophenol by NaBH4 were observed for SPB immobilized Ni or Ag nanoparticles.
© by Oldenbourg Wissenschaftsverlag, München, Germany
Artikel in diesem Heft
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- Optimizing the Sensitivity of FT-Rheology to Quantify and Differentiate for the First Time the Nonlinear Mechanical Response of Dispersed Beer Foams of Light and Dark Beer
- Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning
- Complexation of charged colloids with polyelectrolyte stars
- Charging and Aggregation of Positively Charged Colloidal Latex Particles in Presence of Multivalent Polycarboxylate Anions
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- Repulsive Forces between Spherical Polyelectrolyte Brushes in Salt-Free Solution
- Structure-Property Relations of Liquid Crystalline Gels with ABA-Triblock Copolymers as Gelators
- Direct-Imaging Cryo-SEM of Nanostructure Evolution in Didodecyldimethylammonium Bromide-Based Microemulsions
- Solubilisation of Oils of Different Polarity in Aqueous Solutions of Pluronic Triblock Copolymers
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- Temperature Controlled Activity of Lipase B from Candida Antarctica after Immobilization within p-NIPAM Microgel Particles
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- Probability Densities of a Forced Probe Particle in Glass: Results from Mode Coupling Theory and Simulations of Active Microrheology
- Molecular Order and Dynamics of Tris(2-ethylhexyl)phosphate Confined in Uni-Directional Nanopores
- The Structure of Fluids with Impurities
- Packing of Cylindrical Keggin-Type Polyoxometalate Hybrid Micelles as a Function of Aspect Ratio
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Artikel in diesem Heft
- Preface — An energetic life between soft matter and hard X-rays
- Optimizing the Sensitivity of FT-Rheology to Quantify and Differentiate for the First Time the Nonlinear Mechanical Response of Dispersed Beer Foams of Light and Dark Beer
- Adsorption of Spherical Polyelectrolyte Brushes: from Interactions to Surface Patterning
- Complexation of charged colloids with polyelectrolyte stars
- Charging and Aggregation of Positively Charged Colloidal Latex Particles in Presence of Multivalent Polycarboxylate Anions
- Spherical Polyelectrolyte Brushes on Colloidal Poly(butadiene) Particles
- Repulsive Forces between Spherical Polyelectrolyte Brushes in Salt-Free Solution
- Structure-Property Relations of Liquid Crystalline Gels with ABA-Triblock Copolymers as Gelators
- Direct-Imaging Cryo-SEM of Nanostructure Evolution in Didodecyldimethylammonium Bromide-Based Microemulsions
- Solubilisation of Oils of Different Polarity in Aqueous Solutions of Pluronic Triblock Copolymers
- Double Responsive Hydrogels based on Tertiary Amine Methacrylate Star Block Copolymers
- Coarse-Graining of Ionic Microgels: Theory and Experiment
- Non NIPAM Based Smart Microgels: Systematic Variation of the Volume Phase Transition Temperature by Copolymerization
- Temperature Controlled Activity of Lipase B from Candida Antarctica after Immobilization within p-NIPAM Microgel Particles
- Synthesis of PEG-Stabilized Fluoro-Acrylate Particles and Study of their Glass Transition in Aqueous Dispersion
- Probability Densities of a Forced Probe Particle in Glass: Results from Mode Coupling Theory and Simulations of Active Microrheology
- Molecular Order and Dynamics of Tris(2-ethylhexyl)phosphate Confined in Uni-Directional Nanopores
- The Structure of Fluids with Impurities
- Packing of Cylindrical Keggin-Type Polyoxometalate Hybrid Micelles as a Function of Aspect Ratio
- Au-TiO2 Yolk-Shell Particles for Photocatalysis Application
- Formfactors of Hollow and Massive Rectangular Parallelepipeds at Variable Degree of Anisometry
