Sulfurized estolides and methods of making and using the same

At least one compound of Formula I:

• wherein
• W1, W2, W3, W4, W5, W6, and W7, independently for each occurrence, are selected from —CH2—, —CH═CH—, —CHR5—, and
• provided that at least one of W1, W2, W3, W4, W5, W6, or W7 is —CHR5— or
• R5 is selected from —SvR6, wherein v is an integer selected from 1 to 8 and R6 is selected from hydrogen and an estolide residue;
• T is S;
• z is an integer selected from 0 to 15;
• p is an integer selected from 0 to 15;
• q is an integer selected from 0 to 15;
• x is, independently for each occurrence, an integer selected from 0 to 20;
• y is, independently for each occurrence, an integer selected from 0 to 20;
• n is equal to or greater than 0;
• and
• R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched,
• wherein each fatty acid chain residue of said at least one compound is independently optionally substituted.