Characteristics of Particle Sizes produced by suspension polymerization of styrene

Stamatoudis, Michael; Apostolidou, Christina

doi:10.1002/ppsc.19920090120

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…The Sauter mean diameter, D 32 , can be defined as:

D_{32} = \frac{\sum_{d_{m i n}}^{d_{m a x}} n_{i} d_{p_{i}}^{3}}{\sum_{d_{m i n}}^{d_{m a x}} n_{i} d_{p_{i}}^{2}}

where n i is the number of particles with diameter d pi , and d min and d max are the diameters of the smallest and largest particles, respectively.…”

Section: Methodsmentioning

confidence: 99%

In-Situ Incorporation of Poly(methyl methacrylate) in Suspension Styrene Polymerizations

Castor

Nele

Pinto

2014

Macromol. React. Eng.

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Blends of poly(styrene)/poly(methyl methacrylate) (PS/PMMA) are produced in situ during suspension polymerizations of styrene performed in the presence of PMMA. The effects caused by the in situ incorporation of PMMA on the kinetic behavior of the reaction and on the molar mass distributions (MMD) and particle size distributions (PSD) of the obtained PS/PMMA polymer particles are evaluated. It is shown that the PMMA content can lead to significant changes of the initial viscosity of the reaction medium, also leading to significant changes of styrene conversions during the reaction course. Besides, addition of PMMA can cause an increase of the average molar masses and average particles sizes of the obtained polymer beads, also leading to broadening of the MMD and PSD of the final resin.

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“…The Sauter mean diameter, D 32 , can be defined as:

D_{32} = \frac{\sum_{d_{m i n}}^{d_{m a x}} n_{i} d_{p_{i}}^{3}}{\sum_{d_{m i n}}^{d_{m a x}} n_{i} d_{p_{i}}^{2}}

where n i is the number of particles with diameter d pi , and d min and d max are the diameters of the smallest and largest particles, respectively.…”

Section: Methodsmentioning

confidence: 99%

In-Situ Incorporation of Poly(methyl methacrylate) in Suspension Styrene Polymerizations

Castor

Nele

Pinto

2014

Macromol. React. Eng.

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“…Thus monodisperse hydrophilic latex particles (SourceETH, Bioscience, S) of 15 and 30 µm in diameter have been used and compared with those of Saccharomyces cerevisiae. In addition, latex particles of 1.7 µm mean diameter have been produced with a suspension polymerization technique (Stamatoudis, 1992). Figure 3 shows the size distribution of the particles measured by laser diffraction spectrometry (Helos, Sympatec, D).…”

Section: Experimental Apparatusmentioning

confidence: 99%

Immobilization of Highly Concentrated Cell Suspensions Using the Laminar Jet Breakup Technique

Brandenberger

Widmer

1999

Biotechnol. Prog.

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The controlled breakup of a disturbed jet is a well-known technique for monodisperse particle production and has been well-investigated for Newtonian and viscoelastic fluids. For the immobilization of cells in beads of a hydrogel it has been observed that there is a maximum cell concentration beyond which a monodisperse bead distribution cannot be reached. Higher concentrations lead to irregular jet breakup and thus to droplet coalescence forming beads with double or triple volume. This maximum cell concentration has been investigated for different operating conditions using latex beads of different diameters as a model substance for cells and baker's yeast as a comparison. The maximum cell concentration where a monodisperse size distribution could still be achieved was increased using an electrostatic droplet dispersion system.

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Characteristics of Particle Sizes produced by suspension polymerization of styrene

Cited by 2 publications

References 16 publications

In-Situ Incorporation of Poly(methyl methacrylate) in Suspension Styrene Polymerizations

In-Situ Incorporation of Poly(methyl methacrylate) in Suspension Styrene Polymerizations

Immobilization of Highly Concentrated Cell Suspensions Using the Laminar Jet Breakup Technique

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