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This study introduces a new method for synthesizing multiblock copolymers (MBCPs) using a dinuclear cobalt complex. These novel MBCPs enhance polyester and polyacrylate blend performance, acting as effective compatibilizers.

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Area of Science:

  • Polymer Chemistry
  • Materials Science

Background:

  • Multiblock copolymers (MBCPs) are crucial for improving polyester and polyolefin blends.
  • Current synthesis and structural modification of MBCPs present significant challenges.

Purpose of the Study:

  • To develop a novel, efficient method for synthesizing multiblock copolymers (MBCPs).
  • To explore the use of these MBCPs as compatibilizers for polymer blends.

Main Methods:

  • Synthesis of MBCPs via switchable polymerization of epoxides, cyclic anhydrides, and acrylates.
  • Utilizing a dinuclear cobalt complex with anhydrides as switchers.
  • Employing intramolecular bimetallic synergistic catalysis for controlled synthesis.

Main Results:

  • Successful synthesis of MBCPs with controlled molecular weights and narrow dispersities.
  • Production of MBCPs with diverse structures and block numbers due to monomer compatibility.
  • Demonstrated enhancement of polyester and polyacrylate blend performance, particularly improving polyester toughness.

Conclusions:

  • The proposed method offers a versatile route for MBCP synthesis.
  • The synthesized MBCPs effectively compatibilize immiscible polymer blends.
  • These MBCPs show significant potential as high-performance compatibilizers in material science applications.