| 摘要 |
FIELD: chemistry.SUBSTANCE: composition contains 1-20 wt % polylactic acid with molecular weight of 50000-110000 and polyethylene terephthalate. The composition is characterised by axial Young's modulus of 1.4 Pa and radial Young's modulus of 2.8 Pa, as well as characteristic viscosity greater than 0.5 dl/g. The method of making a packaging product involves preparing a polymer mixture from polylactic acid and polyethylene terephthalate, mixing thereof, heating, extrusion and blow moulding.EFFECT: compositions have improved properties, including high strength, flexibility, relative elongation, temperature stability, processability, air permeability and the capacity to form a dead fold.23 cl, 9 tbl, 4 dwg, 2 ex |
