. Author manuscript; available in PMC: 2012 Oct 7.

Published in final edited form as: Chem Commun (Camb). 2011 Aug 22;47(37):10302–10304. doi: 10.1039/c1cc14331j

Table 1.

Critical micelle concentrations (CMCs) of the amphiphilic copolymers with various hydrophilic–lipophilic balances (HLBs)

Sample	HLB^a	HL-ratio^b	CMC/mg L⁻¹	CMC (10⁻⁷ M)
PCL3.5K-mPEG2K	7.27	36 : 64	1.32	2.40
PCL3.5K-mPEG5K	11.76	59 : 41	3.29	3.75
PCL14K-mPEG2K^c	2.50	13 : 87	—	—
PCL14K-mPEG5K	5.26	26 : 74	1.62	0.82
PCL3.5K-G3-mPEG2K	16.56	77 : 23	4.87	3.02
PCL3.5K-G3-mPEG5K	18.42	91 : 9	12.59	3.52
PCL14K-G3-mPEG2K	10.93	52 : 48	1.62	0.65
PCL14K-G3-mPEG5K	14.90	74 : 26	4.74	1.17

HLB = 20 M_H/(M_H + M_L), where M_H is the mass of the hydrophilic block and M_L is the mass of the lipophilic block.⁹ The dendron is considered hydrophilic.

Hydrophilic–lipophilic ratio.

PCL14K-mPEG2K could not be tested due to its poor water solubility.