Polymer substrates formed from carboxy functional acrylamide

A method of forming a particle, the method comprising:

• in a disperse phase within an aqueous suspension, polymerizing a plurality of mer units having the formula:
• wherein R1 is an alkyl group having between 3 and 10 carbons or is a polyether group having between 1 and 10 ether units, wherein R2 is a linear or branched alkyl group having between 3 and 8 carbons or a silyl group, and wherein R3 is hydrogen or an alkyl group having between 1 and 6 carbons;
• thereby forming a polymeric particle including a plurality of hydrophobic protection groups;
• and
• converting the polymeric particle to a hydrophilic particle.