Absorbent articles with biocompostable properties

An absorbent sanitary article, comprising:

• a fluid-permeable top layer;
• a fluid-resistant back layer;
• and
• an absorbent core;
• wherein the absorbent core includes an absorbent fiber and a superabsorbent polymer (SAP);
• wherein the SAP includes a modified biopolymer;
• wherein the biobased carbon content of the modified biopolymer is at least approximately 84%;
• wherein the modified biopolymer has a Free Swell Capacity (FSC) of at least 30 g/g, a Centrifuge Retention Capacity (CRC) of at least 17 g/g, and an Absorbency Under Load (AUL) of at least 7 g/g at 0.7 psi in a saline solution;
• and
• wherein the SAP further comprises a synthetic non-biobased superabsorbent material, wherein the synthetic non-biobased superabsorbent material and the modified biopolymer are not chemically linked, and wherein the SAP does not include a graft polymer.

An absorbent sanitary article, comprising:

• a fluid-permeable top layer;
• a fluid-resistant back layer;
• and
• an absorbent core;
• wherein the absorbent core includes an absorbent fiber and a superabsorbent polymer (SAP);
• wherein the SAP includes a starch-based biopolymer and a synthetic non-biobased superabsorbent material, wherein the synthetic non-biobased superabsorbent material and the starch-based biopolymer are not chemically linked;
• wherein the biobased carbon content of the starch-based biopolymer is at least approximately 80%;
• wherein the SAP does not include a graft polymer;
• wherein the SAP has a Centrifuge Retention Capacity (CRC) of at least 17 g/g and an Absorbency Under Load (AUL) of at least 7 g/g at 0.7 psi in a saline solution.