Table I.

Characteristics of a Series of PEG-PE Micelles in HBS Solution

PEG-PE copolymers	Critical micelle concentration (M)	Micelle size (nm)	Polydispersity	Zeta potential (mV)
PEG5000-DPPE	2.81 × 10−5	17.3 ± 3.4	0.368 ± 0.001	−0.84 ± 2.67
PEG750-DMPE	2.43 × 10−4	7.2 ± 0.9	0.295 ± 0.005	4.29 ± 1.87
PEG750-DPPE	2.49 × 10−4	6.6 ± 0.9	0.415 ± 0.020	1.49 ± 1.27
PEG750-DSPE	9.72 × 10−5	8.2 ± 0.5	0.337 ± 0.028	0.53 ± 0.38
PEG750-DOPE	6.98 × 10−5	7.6 ± 0.1	0.235 ± 0.012	0.38 ± 0.88

DMPE dimyristoyl-PE, DPPE dipalmitoyl-PE, DSPE distearoyl-PE, DOPE dioleoyl-PE