Table 7.

Percentage change in mass loss (ΔmR) for samples conditioned at 120 °C (series 2).

Polymer Name	ΔmR/%
	1M NaOH	1M HCl	Buffer pH = 4	Buffer pH = 6	Buffer pH = 10
PGM	0.5	0.0	0.0	0.0	0.2
PCM	0.4	0.0	0.0	0.1	0.1
PMM	0	0	0	0	0
Copolymer 1	0.3	0.0	0.0	0.1	0.2
Copolymer 2	0.2	0.0	0.0	0.1	0.1
Copolymer 3	0.4	0.0	0.0	0.1	0.2
Copolymer 4	0.2	0.0	0.0	0.0	0.2
Copolymer 5	0.2	0.0	0.0	0.1	0.1
Copolymer 6	0.3	0.0	0.0	0.0	0.1