Aleksander Hejna

Assistant Professor

Politechnika Gdanska

Poland

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About

Aleksander Hejna is an Assistant Professor at Politechnika Poznańska in Poland. His research focuses on the development and characterization of composite materials, including studies on brewers' spent grains, ecofriendly blends, and the upcycling of waste materials. He has published extensively on topics such as the impact of various additives on the properties of composites and the thermal behavior of modified polylactide. His work contributes to advancements in sustainable materials and environmental considerations in material science.

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2025

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2022

Collaborators (18)

Małgorzata Pawlak

Gdynia Maritime University

POLAND

Aleksander Hejna

Research Interests

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About

Articles (27)

Brewers’ Spent Grain from Different Types of Malt: A Comprehensive Evaluation of Appearance, Structure, Chemical Composition, Antimicrobial Activity, and Volatile Emissions

Ecofriendly PEF- and PBF-Based Blends with Epoxidized Natural Rubber: Unraveling the Structure–Property Relationship

The impact of brewers' spent grain type on the structure and performance of poly(ε-caprolactone)-based composites

Structure, performance, and photooxidative stability of Mater-Bi/brewers' spent grain composites as a function of filler thermomechanical and chemical modification

Upcycling of medium-density fiberboard and polyurethane foam wastes into novel composite materials

Green engineered biomaterials for bone repair and regeneration: Printing technologies and fracture analysis

The Recyclability of Fire-Retarded Biobased Polyamide 11 (PA11) Composites Reinforced with Basalt Fibers (BFs): The Influence of Reprocessing on Structure, Properties, and Fire Behavior

More than just a beer – Brewers' spent grain, spent hops, and spent yeast as potential functional fillers for polymer composites

The Impact of Hybrid Flame Retardant Compositions on the Performance of Foamed Flexible Polyurethane/Ground Tire Rubber Composites

Fire-Retardant Flexible Foamed Polyurethane (PU)-Based Composites: Armed and Charmed Ground Tire Rubber (GTR) Particles

Manufacturing and properties of epoxy-basalt fiber laminates filled with waste rigid polyurethane foam for structural and damping applications

Sustainable chemically modified poly(butylene adipate-co-terephthalate)/thermoplastic starch/poly(ε-caprolactone)/cellulose biocomposites: looking at the bulk through the surface

Analysis of emission of volatile organic compounds and thermal degradation in investment casting using fused deposition modeling (FDM) and three-dimensional printing (3DP) made of various thermoplastic polymers

Crystallization behavior and thermal properties of octa-phenyl-substituted silsesquioxane-modified polylactide (PLA)

The use of chain extenders as processing aids in the valorization of single-use polylactide (PLA) products by rotomolding

The Input of Nanoclays to the Synergistic Flammability Reduction in Flexible Foamed Polyurethane/Ground Tire Rubber Composites

The effect of hybridization of fire retarded epoxy/flax-cotton fiber laminates by expanded vermiculite: Structure-property relationship study

Ground lemon and stevia leaves as renewable functional fillers with antioxidant activity for high-density polyethylene composites

Influence of Surface-Modified Montmorillonite Clays on the Properties of Elastomeric Thin Layer Nanocomposites

Wastewater reuse in agriculture: Prospects and challenges

Insights into Seawater Biodegradation of Sustainable Mater-Bi/Poly(ε-caprolactone)-Based Biocomposites Filled with Diisocyanate-Modified Cellulose Particles

Renewable, Degradable, and Recyclable Polymer Composites

Management of ground tire rubber waste by incorporation into polyurethane-based composite foams

One More Step towards a Circular Economy for Thermal Insulation Materials—Development of Composites Highly Filled with Waste Polyurethane (PU) Foam for Potential Use in the Building Industry

Recycling and Processing of Waste Materials

Ground lemon and stevia leaves as renewable functional fillers with antioxidant activity for high-density polyethylene composites

The Impact of Isocyanate Index and Filler Functionalities on the Performance of Flexible Foamed Polyurethane/Ground Tire Rubber Composites

Collaborators (18)

Małgorzata Pawlak

Anna Boczkowska

Marek Szostak

Mateusz Barczewski

Mohammad Reza Saeb

Agnieszka Ossowska

Ali Mohammadi

Sandra Paszkiewicz

Adam Piasecki

Kinga Stuper-Szablewska

Daniel Chuchala

Zaida Ortega

Marcin Strąkowski

Paweł Sulima

Hubert Cieśliński

Aleksandra Mielewczyk-Gryn

Mariusz Marć

Adam Olszewski

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