Nonaqueous poly(methyl methacrylate) dispersions: radical dispersion polymerization in the presence of AB block copolymers of polystyrene and poly(dimethyl siloxane)

Dawkins, J. V.; Taylor, G.

doi:10.1016/0032-3861(79)90173-3

Cited by 73 publications

(62 citation statements)

References 11 publications

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“…This was expected because it is well known for diblock copolymer stabilizers that the final particle size obtained from a dispersion polymerization strongly depends on the molecular weight of the soluble stabilizing segment. 20 Highermolecular-weight stabilizing blocks produced smaller particle sizes because the longer tail lengths were capable of stabilizing a larger surface area. Figure 4(a,b) compares the concentration dependences of poly(VP-co-EDMA) particle diameter and size distribution for four different styrene-butadiene block copolymers.…”

Section: Comparison Of Steric Stabilizersmentioning

confidence: 99%

Effect of reaction parameters on the dispersion polymerization of 1-vinyl-2-pyrrolidone

Horák

Krystufek

Spěváček

2000

J. Polym. Sci. A Polym. Chem.

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Section: Comparison Of Steric Stabilizersmentioning

confidence: 99%

Effect of reaction parameters on the dispersion polymerization of 1-vinyl-2-pyrrolidone

Horák

Krystufek

Spěváček

2000

J. Polym. Sci. A Polym. Chem.

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“…Dawkins et al [64] studied the mechanism behind free radical dispersion polymerization ( figure 12). Using a range of PDMS-b-PS block copolymer stabilizers (2,400 < M ̅ n (PDMS) < 48,000 g/mol and 8,800 < M ̅ n (PS) < 44,000 g/mol, with the PS to PDMS weight block ratio from 0.5 to 4.0), they notably showed a linear relationship (D ∝ c ) between particle diameter (D) and stabilizer concentration (c).…”

Section:  Block Copolymer Of Polydimethylsiloxane (Pdms) / Polystyrementioning

confidence: 99%

“…Using a range of PDMS-b-PS block copolymer stabilizers (2,400 < M ̅ n (PDMS) < 48,000 g/mol and 8,800 < M ̅ n (PS) < 44,000 g/mol, with the PS to PDMS weight block ratio from 0.5 to 4.0), they notably showed a linear relationship (D ∝ c ) between particle diameter (D) and stabilizer concentration (c). [64] They also pointed out the importance of stabilizer molecular weight. They demonstrated that smaller latex particles were obtained when using PDMS-b-PS of higher molecular weight because of the ability of longer stabilizer chains to stabilize larger particle surface area.…”

Section:  Block Copolymer Of Polydimethylsiloxane (Pdms) / Polystyrementioning

confidence: 99%

Dispersion polymerization in non-polar solvent: Evolution toward emerging applications

Richez

Yow

Biggs

et al. 2013

Progress in Polymer Science

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Currently, there is a resurgence of interest in the preparation of monodisperse, size-controlled latex particles in non-polar solvents by the dispersion polymerization technique. This technique has great potential for manufacturing bespoke latex particles for emerging applications such as the use of latex particles in electrophoretic displays, where one of the numerous requirements is that the particle systems be suspended in low dielectric constant, non-polar solvents. This article reviews the academic literature around the typical monomers used in non-polar dispersion polymerization. It briefly introduces the origin of the technique and the initial seminal work carried out in this area. It also describes how such particles have been used in the past as model colloids for academic purposes and provide recent examples where dispersion polymerization is used to create novel functional particles. Subsequently, the article provides a thorough knowledge basis for each monomer used in non-polar dispersion polymerization, with a focus on the evolution of the technique, including progress in controlling the final particle characteristics and in designing novel effective stabilizers. Finally, a brief review on the use of the technique to prepare well-controlled latex particles in supercritical fluids is also presented.

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“…A block or graft copolymer that contains both soluble and insoluble polymer segments for a solvent has been used as a stabilizer. [16,17] Winnik et al showed the existence of regular micelles comprised of several hundred diblock copolymer molecules and the micelle clusters corresponded to the aggregation of tens of micelles in the aqueous solution by dynamic light scattering measurements. [18] The equilibrium state between polymeric micelles and unimers affects the adsorption rate of copolymeric stabilizer on the surface of primary particles.…”

Section: Introductionmentioning

confidence: 98%

Preparation of Monodisperse Polylactide Microspheres by Dispersion Polymerization Using a Polymeric Stabilizer with Hydroxy Groups

Muranaka¹,

Ono²

2009

Macromol. Rapid Commun.

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Monodisperse poly(D,L-lactide) (PDLLA) microspheres have been prepared by dispersion polymerization of D,L-lactide with a synthetic polymeric stabilizer. The polymerization is carried out in xylene/heptane (1:2, v/v) at 368 K for 3 h with poly[(dodecyl methacrylate)-co-(2-hydroxyethyl methacrylate)] (P(DMA-co-HEMA)). P(DMA-co-HEMA) has hydroxy groups as an initiation group for pseudoanionic dispersion polymerization. The particle diameter and the coefficient of variation concerning the diameter distribution of the obtained PDLLA microspheres are 3.9 µm and 4.3%, respectively. In addition, from the results of dynamic light scattering measurements, it is found that P(DMA-co-HEMA) and the PDLLA-grafted copolymer form a micellar structure in solution.

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Nonaqueous poly(methyl methacrylate) dispersions: radical dispersion polymerization in the presence of AB block copolymers of polystyrene and poly(dimethyl siloxane)

Cited by 73 publications

References 11 publications

Effect of reaction parameters on the dispersion polymerization of 1-vinyl-2-pyrrolidone

Effect of reaction parameters on the dispersion polymerization of 1-vinyl-2-pyrrolidone

Dispersion polymerization in non-polar solvent: Evolution toward emerging applications

Preparation of Monodisperse Polylactide Microspheres by Dispersion Polymerization Using a Polymeric Stabilizer with Hydroxy Groups

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