Table 1.

Characteristics of synthesized copolymers ^a

	monomer unit composition (mol %)					molecular weightc		solubility d
	in feed CB/BMA	in copolymerb CB/BMA	initiator (mmol/L)	polymerization time (h)	yield (%)	MW×104	Mw/Mn	ethanol	water
PCB1–28	20 / 80	17 / 83	5	16	80	7.4	2.6	+ +	– –
PCB1–37	30 / 70	31 / 69	5	16	87	8.3	2.4	+ +	– –
PCB1–46	40 / 60	38 / 62	5	16	88	6.7	2.8	+ +	+ +
PCB1–55	50 / 50	50 / 50	5	16	78	7.1	2.3	+ +	+ +
PCB1–64	60 / 40	57 / 43	5	16	80	7.5	2.7	+ +	+ +
PCB1–82	80 / 20	82 / 18	5	16	85	6.9	2.5	+ +	+ +
PCB2–37	30 / 70	27 / 73	5	16	86	7.9	2.8	+ +	– –

^a[Monomer] = 0.5 mol/L; initiator for all the polymers was AIBN; polymerization temperature was 65 °C.

^bDetermined by ¹H NMR spectrum in CD₃OD.

^cMolecular weights were determined by GPC in methanol/water = 7/3, [LiBr] = 10 mmol/L, and poly(ethylene oxide) standards. M_w and M_n represent weight-average molecular weight and number-average molecular weight, respectively.

^dSolubility was determined with 10 mg/mL each polymer sample and described as soluble (+) or insoluble (–) at 25 °C. PCB1 denotes poly(CBl-co-BMA) while PCB2 poly(CB2-co-BMA). Number in PCB1 and PCB2 stands for the molar ratio of two units, e.g., 28 in PCB1–28 indicates that the molar ratio of CB/BMA in this copolymer is 2/8.