Poly(delta-gluconolactone) and Poly(delta-gluconolactone-ε-caprolactone) from delta-Gluconolactone and ε-Caprolactone by Ring-Opening Polymerization

Table 3

The properties of polymers with varying d-GL/CL ratios.

Entry	d-GL/CL ratio in the feed	Intrinsic viscosity ()	(%)	/g·mol^−1	Polydispersity (PDI)
(1)	10 : 0	0.40	---	15814	1.27
(2)	5 : 5	0.46	12.09	18116	1.16
(3)	4 : 6	0.48	28.01	21675	1.41
(4)	3 : 7	0.56	33.42	22752	1.33
(5)	2 : 8	0.70	38.79	25524	1.40
(6)	1 : 9	0.87	40.51	28631	1.35
(7)	0 : 10	1.07	59.78	49901	1.36

PGL and P(GL-CL) were operated under the condition of MBTO as catalyst and diethylene glycol as initiator in n-octane. viscosity of polymers was carried out in DMSO at 30°C by Ubbelohde viscometer. by XRD spectra. by GPC.