High performance polyethylene/thermoplastic starch blends through controlled emulsification phenomena. 2013

Claire Cerclé, and Pierre Sarazin, and Basil D Favis
CREPEC, Department of Chemical Engineering, Ecole Polytechnique de Montréal, 2900 Edouard Montpetit, PO 6079, Station Centre-Ville, Montréal, Qc, H3C 3A7, Canada.

The emulsification efficacies of a range of compatibilizers for polyethylene/thermoplastic starch blends have been studied and a detailed morphological and mechanical analysis has been conducted. It is shown that polyethylene-maleic anhydride terpolymers containing elastomeric segments provided excellent emulsification of PE/TPS blends with a fine morphology (volume diameter of 1.4 μm; number average diameter of 600 nm). The blends compatibilized with these copolymers exhibit a very high elongation at break of about 800%, the highest value ever reported for PE/TPS systems. Also, significant improvement in notched impact strength performance at interfacial saturation was found for these systems leading to specimens with an equivalent performance to pure polyethylene. An excellent correlation was found between the critical concentration for interfacial saturation and the mechanical properties, indicating the key role of morphology.

UI MeSH Term Description Entries
D008299 Maleic Anhydrides Used in copolymerization reactions, in the Diels-Alder(diene)synthesis, in the preparation of resins, pharmaceuticals and agricultural chemicals. It is a powerful irritant and causes burns. 2,5-Furandiones,Maleic Anhydride,2,5 Furandiones,Anhydride, Maleic,Anhydrides, Maleic
D008422 Materials Testing The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility. Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D010969 Plastics Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Plastic
D011108 Polymers Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS). Polymer
D004548 Elasticity Resistance and recovery from distortion of shape.
D013213 Starch Any of a group of polysaccharides of the general formula (C6-H10-O5)n, composed of a long-chain polymer of glucose in the form of amylose and amylopectin. It is the chief storage form of energy reserve (carbohydrates) in plants. Amylomaize Starch,Amylum,Cornstarch,Keoflo,Starch, Amylomaize
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D045703 Emulsifying Agents SURFACE-ACTIVE AGENTS that induce a dispersion of undissolved material throughout a liquid. Emulsifying Agent,Emulsifyers,Agent, Emulsifying,Agents, Emulsifying
D055595 Mechanical Phenomena The properties and processes of materials that affect their behavior under force. Mechanical Concepts,Mechanical Processes,Mechanical Phenomenon,Mechanical Process,Concept, Mechanical,Concepts, Mechanical,Mechanical Concept,Phenomena, Mechanical,Phenomenon, Mechanical,Process, Mechanical,Processes, Mechanical

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