Improving the Thermal Properties of Polycarbonate via the Copolymerization of a Small Amount of Bisphenol Fluorene with Bisphenol A

Table 1

List of the proton NMR signal.

Sample	BPA/BHPF feed ratio (mol/mol)	NMR signal (chemical sift, ppm)
		Ar-H	BHPF
PAFC-1	99/1	7.07-7.13 (m,2H)	7.18-7.33 (m,8H)
PAFC-2	98/2	7.07-7.13 (m,2H)	7.18-7.33 (m,16H)
PAFC-3	97/3	7.07-7.13 (m,2H)	7.18-7.33 (m,24H)
PAFC-4	96/4	7.07-7.13 (m,2H)	7.18-7.33 (m,32H)
PAFC-5	95/5	7.08-7.13 (m,2H)	7.18-7.33 (m,40H)