Table 3.

Number average molecular weight ($\overline{M_{\mathrm{n}}}$), weight average molecular weight ($\overline{M_{\mathrm{w}}}$), polydispersity index (PDI) and %yield of PCLs from bulk polymerization of ε-CL initiated by Sn(Oct)₂/n-HexOH at 140, 160 and 180 °C for 1 h

Model	Symbol	f(α)	Model description
Reaction model	A1 (F1)	(1-α)	Unimolecular decay law (instantaneous nucleation and unidimensional growth)
Nucleation models	A2	2(1-α)[-ln(1-α)]1/2	Avrami-Erofeev (random instant nucleation and 2D growth)
	A3	3(1-α)[-ln(1-α)]2/3	Avrami-Erofeev (random instant nucleation and 3D growth)
	P2	2α1/2	Power law (nuclei growth is a constant)
	P3	3α2/3	Power law (nuclei growth is a constant)
Geometricalcontraction models	R2	2(1-α)1/2	Phase boundary control reaction (contraction area, i.e., bidimensional shape)
	R3	3(1-α)2/3	Phase boundary control reaction (contraction area, i.e., tridimensional shape)
Diffusion models	D1	1/(2α)	1D diffusion (disk particle shape)
	D2	1/[-ln(1-α)]	2D diffusion (cylinder particle shape)