Advances in Nonreactive Polymer Compatibilizers for Commodity Polyolefin Blends

Recycling mixed polyolefin plastics is a significant challenge due to the limitations in sorting and degraded mechanical properties of blends. Nonreactive compatibilization by adding a small amount of polymeric additive is a widespread approach to restoring the performance and value of recycled plas...

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Bibliographic Details
Published in:Chemical reviews 2024-08, Vol.124 (16), p.1
Main Authors: Lin, Ting-Wei, Padilla-Vélez, Omar, Kaewdeewong, Parin, LaPointe, Anne M, Coates, Geoffrey W, Eagan, James M
Format: Article
Language:English
Subjects:
Chemical synthesis
Compatibility
Compatibilizers
Copolymers
Design parameters
Mechanical properties
Performance degradation
Polymer blends
Polymers
Polyolefins
Production methods
Recycled materials
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Summary:Recycling mixed polyolefin plastics is a significant challenge due to the limitations in sorting and degraded mechanical properties of blends. Nonreactive compatibilization by adding a small amount of polymeric additive is a widespread approach to restoring the performance and value of recycled plastics. Over the past several decades, synthetic advances have enabled access to low-cost copolymers and precision architectures for deepening the understanding of compatibilization mechanisms in semicrystalline polyolefins. This review covers the design parameters of a polymeric compatibilizer, the testing of blends, the synthetic methods of producing economically viable additives, and surveys the literature of blends of compatibilized HDPE, LLDPE, LDPE, and iPP. From this, readers should gain a comprehension of the polymer mechanics, synthesis, and macromolecular engineering of processable polyolefin blends, along with the field's future directions.
ISSN:0009-2665
1520-6890