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Design of Emulsion Polymerization Reactors for Monomer‐Transport Limited Emulsion Polymerization.

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Title: Design of Emulsion Polymerization Reactors for Monomer‐Transport Limited Emulsion Polymerization.
Authors: Schork, Francis Joseph1 (AUTHOR) Joseph.Schork@Chbe.Gatech.Edu
Source: Macromolecular Reaction Engineering. Apr2025, Vol. 19 Issue 2, p1-3. 3p.
Subjects: Emulsion polymerization, Polymerization reactors, Dimensionless numbers, Polymerization, Chemical kinetics, Copolymerization
Abstract: Damkohler Number (Da) analysis can identify monomers and emulsion polymerization operating regimes where the polymerization may be monomer‐transport, rather than reaction‐limited. In these cases, the expected monomer concentration in the growing polymer particles will be reduced due to the transport limitation. This will reduce the expected rate of polymerization, and require the design of a larger polymerization reactor for a given production rate. In heterogenous catalysis, an effectiveness factor is used to quantify the reduction in reaction rate and necessarily increase reactor size to compensate. This paper will show that it is possible to use Da (functionally equivalent to the Thiele Modulus in heterogeneous catalysis) to estimate an effectiveness factor for emulsion polymerization. Also shown is a procedure for calculating the monomer feed ratio during binary copolymerization when one must not only take into account the reactivity ratios but also the possibility that one of the monomers is monomer‐transport limited. The method provides the monomer feed ratio during the semibatch phase of a binary copolymerization. This alternative to starved‐feed polymerization shall result in much faster polymerization and higher polymerization kettle utility. [ABSTRACT FROM AUTHOR]
Copyright of Macromolecular Reaction Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Design of Emulsion Polymerization Reactors for Monomer‐Transport Limited Emulsion Polymerization.
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  Data: <searchLink fieldCode="DE" term="%22Emulsion+polymerization%22">Emulsion polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization+reactors%22">Polymerization reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Dimensionless+numbers%22">Dimensionless numbers</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Copolymerization%22">Copolymerization</searchLink>
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  Data: Damkohler Number (Da) analysis can identify monomers and emulsion polymerization operating regimes where the polymerization may be monomer‐transport, rather than reaction‐limited. In these cases, the expected monomer concentration in the growing polymer particles will be reduced due to the transport limitation. This will reduce the expected rate of polymerization, and require the design of a larger polymerization reactor for a given production rate. In heterogenous catalysis, an effectiveness factor is used to quantify the reduction in reaction rate and necessarily increase reactor size to compensate. This paper will show that it is possible to use Da (functionally equivalent to the Thiele Modulus in heterogeneous catalysis) to estimate an effectiveness factor for emulsion polymerization. Also shown is a procedure for calculating the monomer feed ratio during binary copolymerization when one must not only take into account the reactivity ratios but also the possibility that one of the monomers is monomer‐transport limited. The method provides the monomer feed ratio during the semibatch phase of a binary copolymerization. This alternative to starved‐feed polymerization shall result in much faster polymerization and higher polymerization kettle utility. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Macromolecular Reaction Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1002/mren.202400028
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      – Code: eng
        Text: English
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        PageCount: 3
        StartPage: 1
    Subjects:
      – SubjectFull: Emulsion polymerization
        Type: general
      – SubjectFull: Polymerization reactors
        Type: general
      – SubjectFull: Dimensionless numbers
        Type: general
      – SubjectFull: Polymerization
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Copolymerization
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      – TitleFull: Design of Emulsion Polymerization Reactors for Monomer‐Transport Limited Emulsion Polymerization.
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              Text: Apr2025
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              Y: 2025
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