Studies of Formation Mechanism, Structure, and Properties of Network Copolymers Obtained by Cocuring of Rolivsan Thermosetting Resins with Aromatic Diamines

Table 3

Assignment of CP/MAS ¹³CNMR chemical shifts of neat ROL copolymers and model polymers.

ROL copolymer	(°С)	δ (ppm from TMS)
		>C=O (h, j, m)	>C< (g)	CArH (c)	CAr- (b)	CAr-O- (d, e)	>CH- (a)	-CH2- (f)	α-CH3 (i)
ROL-II (I)	180	176.6; 175.4	46.7	128; 122	140	154; 158	40	52-56	18.9
ROL-II (II)	220	184.5; 182.9; 179.2; 177.0 175.8; 173.6	46.4	128; 122	140	154; 158	40	53.8	19.4
ROL-II (III)	260	185.1;184-183; 179.4 177.9;176.4; 172.4; 169.9	44.4	128; 122	140	154; 158	40	56.0	19.8
ROL-II (IV)	320	185.2; 183.0; 179.7; 178.0 176.0; 172.3; 170.8	43.9	128; 122	140	154; 158	40	53-55	19.8;15.1
PMMA [18]	—	178.1	45.2	—	—	—		52.2	16.7
Neat PMAA [18]	—	180.7	44.2	—	—	—		53.2	16.0
Neat PMA [17]	—	172.8		—	—	—
CPDA [25]		169.29; 173.34	—	—	—	—	39.79	—	—
Neat PS [22]	—	—	—	127	146	—	40		—
SMMA copolymer [16, 19]	—	175;176; 177	44-47	128-126	143-145	—	38-39		25-15
Pα-ms-PPO [21]	—	—	45	127	145	155	—	57-63	—

Protonated aromatic carbons. Quaternary aromatic carbons. Aliphatic methine carbons. Aliphatic methylene carbons give a broad signal at 40–50 ppm [22]. α-Methyl carbons in polymethacrylic esters. Poly(α-methylstyrene) (Pα-ms)-poly(2,6-dimethyl-p-phenyloxyde) (PPO).