Design of Optical Sensor Membrane Based on Polymer Poly(methyl methacrylate) for Paracetamol Detection in Traditional Herbal Medicine

Table 2

Characterization of optical sensor membrane in the presence of paracetamol.

Reagent	%PMMA	Mixture Solvent; (EA:Reagent)	Homogeneous polymer	Result	Reaction time
FeCl3	5%	6:4	Non-homogeneous	+	1”
		7:3	Non-homogeneous	+	1”
		8:2	Non-homogeneous, fragile	+	1”
	7.5%	6:4	Homogeneous, fragile	+	1”
		7:3	Homogeneous	+	1”
		8:2	Homogeneous	+	1”
	10%	6:4	Non-homogeneous	+	1”
		7:3	Homogeneous	+	1”
		8:2	Non-homogeneous	+	1”
Folin-Ciocalteu	5%	6:4	Homogeneous	+	5”
		7:3	Homogeneous	+	11”
		8:2	Homogeneous	+	10”
	7.5%	6:4	Homogeneous	+	7”
		7:3	Homogeneous	+	10”
		8:2	Homogeneous	+	41”
	10%	6:4	Homogeneous	+	45”
		7:3	Homogeneous	+	50”
		8:2	Homogeneous	+	1’31”
Nessler’s	5%	6:4	Homogeneous	+	7”
		7:3	Homogeneous	+	12”
		8:2	Homogeneous	+	1’37”
	7.5%	6:4	Non-homogeneous	+	11”
		7:3	Non-homogeneous	+	32”
		8:2	Non-homogeneous	+	8’40”
	10%	6:4	Homogeneous	+	12”
		7:3	Homogeneous	+	55”
		8:2	Homogeneous	+	6’30”

EA: ethyl acetate; (+): suitable color changes; (‘): minute; (“): second.