Pet scrap composites - new engineering polymers
Regina Jeziórska Instytut Chemii Przemysłowej, Zakład Polimerów Konstrukcyjnych i Specjalnych, ul. Rydygiera 8, 01-793 Warszawa
Annals 1 No. 2, 2001 pages 233-236
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abstract Structural phases and blends properties of unfilled and filled with glass fiber, combination of glass fiber with glass ball or mica PET scrap/oxazoline functionalised LDPE blends have been investigated in a chemical modification involving reactive extrusion with a ricinoloxazoline maleinate. The interfacial reaction between oxazoline groups in oxazoline grafted LDPE and PET scrap were studied by the differential scanning calorimetry (DSC) and the scanning electron microscopy (SEM). The phase morphology of the blends was of semicrystalline type according to SEM results (Fig. 1). The most important effects of glass reinforcement are better thermal properties together with higher strength (tensile and flexural) and stiffness (flexural modulus) which indicate many potential applications (Tab. 2). Mica offer high rigidity, low thermal expansion, reduced flammability, increased heat distortion temperature (Tab. 3). The reactive extrusion combined with reinforcing provides a possibility to produce a variety of new high-impact composites by varying the type and concentration of the filler. Cost reduction opportunities of the recipes by using PET waste have also been explored.