Table 2.

Physicochemical properties of the poly(allyl methacrylamide-co-hydroxypropyl methacrylamide) copolymers.

Copolymer	Precursor PPFMA polymer	Feed Ratioa All-NH2 / HP- NH2 (% / %)	AllMAb (%)	AllMAb (n)	HPMAb (%)	HPMAb (n)	PFMA conversion (%)	DPc (−)	Mn, thd (g.mol−1)	Mn, SECe (g.mol−1)	Mw/Mne (−)
5	1	50 / 50	38	76	44	88	82	199	21900	24500	1.35
6	1	20 / 80	16	32	68	135	84	199	23000	24500	1.32
7	1	0 / 100	0	0	88	175	88	199	24700	24900	1.45
8	2	50 / 50	47	126	48	129	95	269	33900	28900	1.41
9	2	20 / 80	20	54	69	186	89	269	33000	33500	1.42
10	2	0 / 100	0	0	92	247	92	269	34800	36000	1.47
11	3	50 / 50	48	178	46	171	94	372	46400	43000	1.52
12	3	20 / 80	20	74	72	268	92	372	47000	44400	1.50
13	3	0 / 100	0	0	92	345	92	372	48600	47800	1.57
14	4	50 / 50	47	253	45	243	92	539f	65788	69500	1.48
15	4	0 / 100	0	0	91	490	91	539f	69200	76000	1.41

^aFeed ratio of allyl amine (All-NH₂) and 2-hydroxypropylamine (HP-NH₂) in the post-polymerization modification reaction.

^bPercentage/number of allyl methacrylamide and 2-hydroxypropyl methacrylamide units determined by ¹H-NMR spectroscopy after post-polymerization modification of PPFMA with either 2-hydroxypropylamine or a feed mixture of 50 or 80 mol. % 2-hydroxypropylamine and 50 or 20 mol. % allylamine, respectively.

^cNumber average degree of polymerization of the PPFMA precursor as determined from ¹H-NMR spectroscopy from comparison of the protons on the RAFT agent end group to the -CH₂ backbone peaks.

^dTheoretical number-average molecular weight of the post-modified copolymers using the number-average degree of polymerization of the PPFMA precursor and the number of allyl methacrylamide and 2-hydroxypropyl methacrylamide repeat units, respectively as determined from ¹H-NMR spectroscopy.

^eNumber-average molecular weight/polydispersity determined from DMF SEC.

^fNumber average degree of polymerization of the PPFMA determined from DMF SEC after post-modification with 2-hydroxypropylamine to yield poly(2-hydroxypropyl methacrylamide).