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Kinetics Dependence of RAFT Emulsion Polymerization of 2‐Ethylhexyl Acrylate on Initiator Concentrations.

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Title: Kinetics Dependence of RAFT Emulsion Polymerization of 2‐Ethylhexyl Acrylate on Initiator Concentrations.
Authors: Ni, Huanxin1,2 (AUTHOR), Luo, Yingwu1,2 (AUTHOR) yingwu.luo@zju.edu.cn
Source: Macromolecular Reaction Engineering. Jun2025, Vol. 19 Issue 3, p1-7. 7p.
Subjects: Polymerization kinetics, Ethylhexyl acrylate, Emulsion polymerization, Copolymers
Abstract: Reversible addition‐fragmentation chain transfer (RAFT) emulsion polymerization with a well‐designed amphiphilic macroRAFT agent as a surfactant has been well‐developed as a powerful tool to synthesize high molecular weight multiblock copolymers. However, the polymerization kinetics research has been mostly limited to styrene polymerization. It has been reported that the dependence of the particle number on initiator concentration is described by Np∝[I]−0.4 in amphiphilic macroRAFT‐mediated emulsion polymerization of styrene, which surprisingly deviates from the classical Smith–Eward equation. In the current study, the dependence of polymerization kinetics on the initiator concentration in the RAFT emulsion polymerization of 2‐ethylhexyl acrylate (EHA) is investigated. It is revealed that the dependence of the particle number on initiator concentration (Np∝[I]−0.29) is similar to that of styrene but the exponent is less. Additionally, compared to styrene polymerization, the inhibition period in EHA polymerization is significantly extended due to the much lower water‐solubility of EHA. [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: Kinetics Dependence of RAFT Emulsion Polymerization of 2‐Ethylhexyl Acrylate on Initiator Concentrations.
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  Data: <searchLink fieldCode="JN" term="%22Macromolecular+Reaction+Engineering%22">Macromolecular Reaction Engineering</searchLink>. Jun2025, Vol. 19 Issue 3, p1-7. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Polymerization+kinetics%22">Polymerization kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylhexyl+acrylate%22">Ethylhexyl acrylate</searchLink><br /><searchLink fieldCode="DE" term="%22Emulsion+polymerization%22">Emulsion polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Copolymers%22">Copolymers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Reversible addition‐fragmentation chain transfer (RAFT) emulsion polymerization with a well‐designed amphiphilic macroRAFT agent as a surfactant has been well‐developed as a powerful tool to synthesize high molecular weight multiblock copolymers. However, the polymerization kinetics research has been mostly limited to styrene polymerization. It has been reported that the dependence of the particle number on initiator concentration is described by Np∝[I]−0.4 in amphiphilic macroRAFT‐mediated emulsion polymerization of styrene, which surprisingly deviates from the classical Smith–Eward equation. In the current study, the dependence of polymerization kinetics on the initiator concentration in the RAFT emulsion polymerization of 2‐ethylhexyl acrylate (EHA) is investigated. It is revealed that the dependence of the particle number on initiator concentration (Np∝[I]−0.29) is similar to that of styrene but the exponent is less. Additionally, compared to styrene polymerization, the inhibition period in EHA polymerization is significantly extended due to the much lower water‐solubility of EHA. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Group: Ab
  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.202400051
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      – Code: eng
        Text: English
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        PageCount: 7
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    Subjects:
      – SubjectFull: Polymerization kinetics
        Type: general
      – SubjectFull: Ethylhexyl acrylate
        Type: general
      – SubjectFull: Emulsion polymerization
        Type: general
      – SubjectFull: Copolymers
        Type: general
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      – TitleFull: Kinetics Dependence of RAFT Emulsion Polymerization of 2‐Ethylhexyl Acrylate on Initiator Concentrations.
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              Text: Jun2025
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              Y: 2025
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