Table 5.

Results of DSC measurements of melting temperature, melting enthalpy and degree of crystallinity of the initial PP and samples of the extrudate obtained according to the experimental design layouts (Table 1).

	I Heating					Cooling	II Heating
Design Layout	Tm/°C	ΔH/J/g	Xc/%	Tm1/°C	Tm2/°C	Tc/°C	Tm/°C	ΔH/J/g	Xc/%
PP	168	88	42.1	124	189	118	167	95	45.5
6	173	75	42.7	126	187	121	169	84	47.8
10	173	94	53.5	125	186	127	169	99	56.4
12	169	88	50.1	125	182	123	168	95	54.1
13	170	83	44.1	120	180	122	167	93	49.4
14	170	70	39.9	120	184	121	167	75	42.7

T_m1—initial temperature of the melting process; T_m2—end temperature of the melting process; T_m—maximum temperature of the melting process; T_c—crystallization temperature;ΔH—melting enthalpy; X_c—crystallinity degree.