The biodegradable spun-bonded non-woven fabric slices of poly(propylene carbonate) (PPC)/compatibilizer/polypropylene (PP) were prepared by melt blending.Three different compatibilizers were used in this study:maleic anhydride (MAH)

polypropylene grafted with maleic anhydride(PP-2) and polypropylene grafted with maleic anhydride and styrene (PP-g-(MAH-co-St))

and the effects of these three compatibilizers on the performance of slices were studied.The results shown that the optimal contents of MAH

PP-2 and PP-g-(MAH-co-St) were 1%

3% and 8%

respectively.When the weight ratio of PPC:PP was 70:30

the tensile strengths of slices were 20.16

21.37 and 26.34 MPa

MFRs were 81.6 g/10min

103.6 g/10min and 46.4 g/10min

T-5% increased by 50.5 K

10.0 K and 28.0 K with the optimal contents of MAH

PP-2 and PP-g-(MAH-co-St) respectively.SEM analysis results shown that the slices with compatibilizers became smoother

had less depressions and cavities

the 30 days degradation rate of slices with the compatibilizers were more than 3.12%.Ring-opening reactions between the anhydride functional groups of PP-g-(MAH-co-St) and PPC were showed by FTIR and 1H-NMR spectra

so the compatibility and comprehensive performance of the slices were improved.The mechanical

thermal

morphological and degradable properties can be impoved by adding the compatibilizers.