Table 1.

PEG degree of polymerization and polydispersity

PEG	〈Nn〉	〈Nw〉	PDI
				Schulz distribution parameters∗
				b	a
200†	5.92	6.23	1.052	28	0.19
600†	12.53	13.34	1.065	15	0.49
2000‡	39.68	41.77	1.053	20	1.22
3400‡	67.5	72.91	1.08	14	4.8
				Tung distribution parameters∗
				y	m
1000‡	17.16	18.25	1.064	1.875 × 10−6	4.2
4600‡	86.16	96.66	1.122	6.0 × 10−10	4.5

^∗See Rogošić et al. (62) for details.

^†From mass spectrometry.

^‡From gel permeation chromatography.