Surface tension of surfactants.

Sample	cmc/g L−1	γ cmc/mN m−1	Π cmc/mN m−1	pc20	Γ max × 1010/mol cm−2	A min/nm−2
b-DPEO10	0.013	31.55	40.45	5.48	0.99	1.68
b-DPEO12	0.020	31.85	40.15	5.72	0.85	1.95
c-DPEO10	0.200	31.60	40.40	2.41	2.09	0.80