. 2017 Apr 5;2(4):1309–1320. doi: 10.1021/acsomega.7b00007

Table 1. Structural Parameters of the Phosphonic and Carboxylic PEG Copolymers Used in This Work^a.

terminus	M_n(PEG), g mol^–1	M_n, g mol^–1	M_w, g mol^–1	acid group, meq g^–1	funct. group per chain
phosphonic acid	1000	5300	9500	1.58	4.2
	2000	7200	12 950	0.87	3.1
	5000	42 600	76 650	0.35	7.4
carboxylic acid	2000	8600	15 500	0.46	4.0

M_n(PEG) denotes the PEG molecular weight of the pendant side chains and M_n and M_w denote the number and mass averaged molecular weights of the statistical copolymers, respectively, as determined by light scattering. The molar equivalent of acid groups per gram (meq g^–1) of polymer was determined from ¹H and ³¹P NMR, leading to estimates of the number of functionalized groups per chain.

Table 1. Structural Parameters of the Phosphonic and Carboxylic PEG Copolymers Used in This Worka.

Table 1. Structural Parameters of the Phosphonic and Carboxylic PEG Copolymers Used in This Work^a.