3 publications
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Published Subscription
Density-Based Separation and Polymer Type Verification of Mixed Post-ConsumerThermoplastic Streams: A Sequential Separation and Contamination Reduction Protocol for Secondary Polymer Supply ChainsBy Fernando Jasso Palacio
Abstract: The separation of mixed post-consumer thermoplastic waste streams into polymer-type-specific fractions suitable for industrial reintegration is a fundamental chemical separation challenge in secondary polymer supply chains. Density-based separation, exploiting the characteristic density ranges of common thermoplastic polymers, remains the dominant first-stage separation technique in commercial recycling operations due to its low cost, scalability, and applicability across mixed waste stream compositions. This paper presents a sequential separation and contamination reduction protocol …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 Read article →
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Published Subscription
Virgin-Recycled Thermoplastic Matrix Systems as Engineered Composite Materials: A Compositional Framework for Mechanical Property Retention in Secondary Polymer Supply ChainsBy Fernando Jasso Palacio
Abstract: Virgin-to-recycled thermoplastic resin blends, while conventionally treated as simple two- component mixtures in secondary polymer supply chains, exhibit compositional and morphological characteristics that are more accurately described using the framework of engineered composite matrix systems. This paper presents a compositional framework for understanding and predicting mechanical property retention in virgin-recycled polypropylene (PP) and high-density polyethylene (HDPE) matrix systems, developed through more than twenty years of commercial secondary polymer distribution practice …
Published in International Journal of Composite Materials and Matrices · Vol. 12, Issue 2, 2026 Read article →
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Published Subscription
Design and Commercial Validation of a Hierarchical Three-Tier Quality GradingSystem for Post-Industrial and Post-Consumer Recycled Thermoplastic Resins in US Industrial SupplyChainsBy Fernando Jasso Palacio
Abstract: Quality grading systems for recycled thermoplastic resins providing industrial buyers with a standardized, documented quality classification framework for secondary raw material procurement are a foundational requirement for the reliable integration of recycled materials into industrial supply chains. Despite this requirement, no standardized grading scale has been established for post- industrial and post-consumer PP, HDPE, and LDPE resins in industrial supply chain contexts. This paper presents the design, operational implementation, and …
Published in International Journal of Polymer Science and Engineering · Vol. 12, Issue 2, 2026 · pp. 1–22 Read article →