Inverse Emulsion Polymerization for the Synthesis of High Molecular Weight Polyacrylamide and Its Application as Sand Stabilizer

Table 1

Recipes of solution (S) and emulsion (E) polymerization experiment of acrylamide at 50°C. All quantities are given in grams. The weight average molecular weight was calculated from the GPC and the viscosity average molecular weight was calculated from viscosity measurement and given in g·mol⁻¹.

Sample number	Sample code	Polymer	Monomer Am	Water	Initiator	Surfactant	Oil	Transfer agent A	Mol. wt.	Mol. wt.
1	S	PAM-Sa	52.4	3000	0.1	0	0	53.7	5.0 × 10^5	4.1 × 10^5
2	S:2I	PAM-Sb	52.4	3000	0.2	0	0	53.7	2.4 × 10^5	1.9 × 10^5
3	S:A/3	PAM-Sc	52.4	3000	0.1	0	0	17.9	7.5 × 10^5	6.6 × 10^5
4	E	PAM-Ea	52.4	900	0.1	212	2100	53.7	1.4 × 10^6	7.0 × 10^5
5	E:2I	PAM-Eb	52.4	900	0.2	212	2100	53.7	8.3 × 10^5	5.1 × 10^5
6	E:A/3	PAM-Ec	52.4	900	0.1	212	2100	17.9	2.2 × 10^6	1.8 × 10^5