Nanospheres Prepared by Self-Assembly of Random Copolymers in Supercritical Carbon Dioxide

Table 1

The P(POA-r-TBA) copolymers.

Feed ratio		Time (min)	Yield (%)	𝑀𝑛^a	𝑀𝑤/𝑀𝑛^a	Composition^b
POA	TBA					POA	TBA
0.90	0.10	30	91	66,000	6.77	0.89	0.11
0.80	0.20	45	88	78,000	6.16	0.80	0.20
0.70	0.30	120	88	72,000	5.91	0.67	0.33
0.60	0.40	40	82	57,000	6.78	0.60	0.40

^aEstimated by GPC based on poly(methyl methacrylate) standard.
^bEstimated by ¹H NMR.