pp tt

Abstract. pp 19 vityaz Unpretreated (PP-UT) and thermally pretreated (at 80 °C for 10 days) polypropylene (PP-TT) films of 0 05 mm thickness were subjected to in vitro biodegradation in minimal medium with mixed soil culture for 12 months In this period 10 7 and 0 4% weight loss was observed with PP-TT and PP-UT, respectively