Filled grades of chemically modified poly(ethylene terephthalate)

Structural phases and blends properties of glass fiber filled reactive PET/ R-PE blends (85/15 and 75/25 wt/wt) were studied in a chemical modification involving reactive extrusion with a ricinyl-2-oxazoline maleate. The prese nt method offers compatible heterogenous blends with the structure stabiliz ed at microphase level and with advantageous macroscopic properties, viz., impact and tensile resistance, processability. The most important effects o f glass fiber reinforcement are increases in strength (tensile and flexural ) and stiffness (flexural modulus).