Digital sonifier 450 ce

Example 12

10 mL batch of micron-sized acrylamide particles formed in Linpar 10-13.

Solution 1 (10 wt % Acrylamide (AAm) stock solution): 50 g acrylamide monomer and 450 g water are mixed until a clear and homogeneous solution is formed.

Solution 2 (stabilizer): 1 g of Hypermer 2296 (stabilizer) is weighed out followed by the addition of 7 g Linpar 10-13 (hereafter referred to as the solvent). The stabilizer solution is stirred until a homogeneous solution is obtained.

Solution 3 (monomer phase): 0.05 g of 1,2-dihydroxy bis acrylamide (crosslinker, hereafter called DHEBA) is added to 2 g of solution 1 (10 wt % AAm stock solution). The solution is then heated to ˜40° C. to facilitate mixing.

Solution 4 (emulsion phase): Solutions 2 and 3 are mixed using Ultraturrax for 1 minute, and then sonicated for 3 minutes (6×30 sec intervals) on ice (Branson digital sonifier 450 CE, 40% amplitude). Following emulsification, 0.81 g of a PDMAAm particle suspension (approximately 7 wt % dry content—hereafter referred to as seed) is added to the emulsion, and the seed-containing emulsion is allowed to swell overnight (˜16 h) at 50° C. under gentle stirring/rotation). Following swelling, 0.08 g of Azobisdimethyl valeronitril (radical initiator from Wako Chemicals, hereafter called V-65) is added to the solution under gentle stirring. Solution 4 is polymerized at 50° C. for 7 h under stirring.

Example 12

10 mL batch of micron-sized acrylamide particles formed in Linpar 10-13.

Solution 1 (10 wt % Acrylamide (AAm) stock solution): 50 g acrylamide monomer and 450 g water are mixed until a clear and homogeneous solution is formed.

Solution 2 (stabilizer): 1 g of Hypermer 2296 (stabilizer) is weighed out followed by the addition of 7 g Linpar 10-13 (hereafter referred to as the solvent). The stabilizer solution is stirred until a homogeneous solution is obtained.

Solution 3 (monomer phase): 0.05 g of 1,2-dihydroxy bis acrylamide (crosslinker, hereafter called DHEBA) is added to 2 g of solution 1 (10 wt % AAm stock solution). The solution is then heated to ˜40° C. to facilitate mixing.

Solution 4 (emulsion phase): Solutions 2 and 3 are mixed using Ultraturrax for 1 minute, and then sonicated for 3 minutes (6×30 sec intervals) on ice (Branson digital sonifier 450 CE, 40% amplitude). Following emulsification, 0.81 g of a PDMAAm particle suspension (approximately 7 wt % dry content—hereafter referred to as seed) is added to the emulsion, and the seed-containing emulsion is allowed to swell overnight (˜16 h) at 50° C. under gentle stirring/rotation). Following swelling, 0.08 g of Azobisdimethyl valeronitril (radical initiator from Wako Chemicals, hereafter called V-65) is added to the solution under gentle stirring. Solution 4 is polymerized at 50° C. for 7 h under stirring.

Example 12

10 mL batch of micron-sized acrylamide particles formed in Linpar 10-13.

Solution 1 (10 wt % Acrylamide (AAm) stock solution): 50 g acrylamide monomer and 450 g water are mixed until a clear and homogeneous solution is formed.

Solution 2 (stabilizer): 1 g of Hypermer 2296 (stabilizer) is weighed out followed by the addition of 7 g Linpar 10-13 (hereafter referred to as the solvent). The stabilizer solution is stirred until a homogeneous solution is obtained.

Solution 3 (monomer phase): 0.05 g of 1,2-dihydroxy bis acrylamide (crosslinker, hereafter called DHEBA) is added to 2 g of solution 1 (10 wt % AAm stock solution). The solution is then heated to ˜40° C. to facilitate mixing.

Solution 4 (emulsion phase): Solutions 2 and 3 are mixed using Ultraturrax for 1 minute, and then sonicated for 3 minutes (6×30 sec intervals) on ice (Branson digital sonifier 450 CE, 40% amplitude). Following emulsification, 0.81 g of a PDMAAm particle suspension (approximately 7 wt % dry content—hereafter referred to as seed) is added to the emulsion, and the seed-containing emulsion is allowed to swell overnight (˜16 h) at 50° C. under gentle stirring/rotation). Following swelling, 0.08 g of Azobisdimethyl valeronitril (radical initiator from Wako Chemicals, hereafter called V-65) is added to the solution under gentle stirring. Solution 4 is polymerized at 50° C. for 7 h under stirring.