Table 1.

Chemical properties of representative synthetic block copolymers

Architecture	Polymer	PEOa	PPOa	End groupb	Massc	PEO%d
Triblock copolymer/P188e	PEO75PPO30PEO75	150	30	–	8400	80
Triblock copolymer/P338e	PEO140PPO44PEO140	280	44	–	8400	84
Triblock copolymer/P331e	PEO7PPO54PEO7	14	54	–	3700	26
Diblock copolymer
	PEO75PPO15 − H	75	15	−H	4200	80
	PEO75PPO15 − C4	75	15	−C(CH3)3	4430	77
Homopolymer	PEO198	198	0	–	8700f	100

^aTotal number of EO or PO monomer units

^bChemical end group at terminal PO

^cAverage molecular weight in g/mol by ¹H NMR end-group analysis

^dPEO weight percent to total molecular weight

^eManufacturer BASF

^fNumber average molecular weight