Polymers Based on Methacrylate Bearing Coumarin Side Group: Synthesis via Free Radical Polymerization, Monomer Reactivity Ratios, Dielectric Behavior, and Thermal Stabilities

Table 2

Copolymerization of MAOC and BMA at various monomer feeds^a and copolymer characteristics.

Sample^a No	𝑀^b1	Intensity of =CHC=O proton in MAOC Unit	Intensity of –OCH2- protons in BMA Unit	𝑚^c1	𝑀𝑛(𝑀𝑤/𝑀𝑛); (GPC)	Time (h)^d
1	0.19	0.90	10	0.15	5000 (1.20)	12
2	0.37	1.55	10	0.24	4000 (1.15)	12
3	0.44	2.60	10	0.35	5300 (1.22)	12
4	0.50	3.50	10	0.42	3800 (1.27)	12
5	0.77	7.35	10	0.60	3900 (1.25)	12
6	0.84	15.65	10	0.76	3800 (1.11)	12

a: conditions of polymerization; FRP at 60°C.
b: mole fraction of MAOC in feed.
c: mole fraction of MAOC in copolymer.
d: the copolymers were prepared at low conversions (<15%).