Table 10 The molecular weight data and an acid value of prepared PLLA samples.

Catalyst	Time (h)	Mw	[η]	Mv	AV
MgO 75 mg	10	3018	0.2121	3113	24.08
MgO 75 mg	25	8480	0.2202	8747	28.05
MgO 50 mg	25	1554	0.055	1603.6	56.1
SnCl₂ (xylene only)	25	10,099	0.2541	10,416.8	56.1
SnCl₂ (Xylene: Decalin)	25	24,874	0.5510	26,766	14
CaO	25	4045	0.1200	4172.5	28.05
Al₂O₃	25	6557	0.1783	6763.4	37.4
Fe₂O₃	25	11,590	0.285	11,955	28.05
ZnCl₂	25	11,051	0.265	10,974	14
Zn metal	25	6754	0.1827	6967	14
ZnO	25	11,356	0.4135	18,858	14
CaCl₂	25	2979	0.0934	3073.3	42.08
Sb₂O₃	25	25,114	0.6482	32,625.3	14
As₂O₃	25	3823	0.1146	3944.1	97.6
TiO₂	25	2788	0.0885	2876.3	105.2
Mg metal	25	1111	0.0535	1550.7	168.3
Strontium chloride	25	4004	0.119	4130	112.2
MgO/p-TSA (1:1)	25	3803	0.1141	3923	80.1
MgO/p-TSA (2:1)	25	6186	0.1700	6381	28.05
MgO/p-TSA (3:1)	25	2227	0.0736	2298	35.06
MgO/MA (1:1)	25	4166	0.1229	4298	30.05
MgO/MA (2:1)	25	11,636	0.246	10,007	28.05
MgO/MA (3:1)	25	5286	0.1495	5453	65.1
ZnO/p-TSA (1:1)	25	1745	0.0602	1800	70.1
ZnO/p-TSA (2:1)	25	11,239	0.2163	8559	14
ZnO/p-TSA (1:2)	25	5948	0.1647	6136	14
ZnO/p-TSA (1:3)	25	9006	0.2314	9290	42.08
ZnO/p-TSA (3:1)	25	5033	0.1436	5192	33.0
ZnO/p-TSA (2:2)	25	10,169	0.2556	10,489	28.05
ZnO/MA (2:2)	25	595	0.0249	614.6	84.2
ZnO/MA (1:1)	25	983	0.1308	1014	33.0
ZnO/MA (2:1)	25	9208	0.3263	14,129	70.1
ZnO/MA (3:1)	25	7823	0.2061	8069	37.4
ZnO/PA (2:2)	25	3964	0.1180	4089	80.1
ZnO/PA (1:1)	25	6403	0.1749	6605	112.2
ZnO/PA (2:1)	25	2731	0.0869	2817	168.3
ZnO/PA (3:1)	25	8297	0.2163	8559	74.8
ZnCl₂/p-TSA	25	2617	0.0840	2700	93.5
ZnCl₂/MA	25	1304	0.0580	1719	112.2
ZnCl₂/PA	25	1975	0.0667	2038	112.2
ZnO/ ZnCl₂ (2:2)	25	10,316	0.2701	11,218	61.1
ZnCl₂/ZnO(2:2)	25	2192	0.0726	2261.7	43.3

Mw, Molecular weight average; [η], intrinsic viscosity; AV, acid value; Mv, molecular weight measured by viscosity.

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