. 2015 Aug 20;4:89–100. doi: 10.1007/s40204-015-0040-4

Table 1.

Molecular weight and composition of MePEG-PCL copolymers

Sample	Feed molar ratio (PCL/MePEG)^a	M _n (Calc.)^b	M _n (Expt.)^a	M _w (Expt.)^a	PDI	Composition weight (%) (MePEG/PCL)^c
MePEG100-PCL0	0	5000	5244	5873	1.12	100:0
MePEG20-PCL80	175	25,000	21,270	28,714	1.35	24:76
MePEG40-PCL60	65.75	12,500	12,213	16,853	1.38	42:58
MePEG60-PCL40	29.16	8333.3	7511	9313	1.24	65:35
MePEG80-PCL20	10.96	6250	5872	7927	1.35	82:18

All molecular weight data were rounded to the nearest 100

^aDetermined on the basis of M _n of polymer calculated in GPC experiments and polydispersity indices (PI = M _w/M _n)

^bCalculated from MePEG (M _w = 5000)

^cDetermined by ¹HNMR spectroscopy (CDCl₃)