2003
DOI: 10.1002/pola.10627
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Sterically stabilized emulsion polymerization of styrene: Pseudo‐semicontinuous approach

Abstract: The sterically stabilized emulsion polymerization of styrene initiated by a water‐soluble initiator at different temperatures has been investigated. The rate of polymerization (Rp) versus conversion curve shows the two non‐stationary‐rate intervals typical for the polymerization proceeding under non‐stationary‐state conditions. The shape of the Rp versus conversion curve results from two opposite effects—the increased number of particles and the decreased monomer concentration at reaction loci as the polymeriz… Show more

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Cited by 7 publications
(7 citation statements)
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“…When comparing the rate of polymerization using these nonionic block copolymer surfactants to that of the emulsion polymerization employing a conventional surfactant, SDS, under the same experimental conditions, we observe that it is slower. This is probably caused by the fact that the number of particles, N p , is lower and the presence of a thick interfacial layer which can act as a barrier for radical entry, depressing the rate of polymerization. , …”
Section: Resultsmentioning
confidence: 99%
“…When comparing the rate of polymerization using these nonionic block copolymer surfactants to that of the emulsion polymerization employing a conventional surfactant, SDS, under the same experimental conditions, we observe that it is slower. This is probably caused by the fact that the number of particles, N p , is lower and the presence of a thick interfacial layer which can act as a barrier for radical entry, depressing the rate of polymerization. , …”
Section: Resultsmentioning
confidence: 99%
“…The monomer can be gradually added to the polymerizing microemulsion system without disturbing its stability to prepare a high‐solid‐content nanosize polymer latex 7. New methods have also been developed that are based on biphasic systems in which the microemulsion is in contact with the continuous phase8 or in the form of large monomer droplets that provide the monomer 9…”
Section: Introductionmentioning
confidence: 99%
“…The formation of an interfacial film on emulsion droplets usually involves a stepwise process: diffusion of species to the interface, adsorption at the interface, and rearrangement at the interface. The interfacial composition and structure of mixed films are predominantly determined by two mechanistic phenomena-competitive adsorption and cooperative adsorption into multilayers, which was documented from mixed solutions of protein–protein, protein–surfactant, and protein–polysaccharide. Recently, much efforts devoted so far to stabilize an emulsion typically involve tuning on the effective interactions through charged groups or grafting polymer chains onto the droplet surface. These mechanisms, however, may pose some problems in certain situations. For example, grafting the polymers onto a droplet surface of CD-based emulsions would inhibit CD’s accessibility as they preferentially cover the droplet surface and replace the ICs .…”
Section: Introductionmentioning
confidence: 99%