Abstract: A method of making a bio-based, slow recovery polyurethane foam includes preparing an aqueous mixture that includes a resin and an additive. The resin, the additive, or both, can be bio-based. The method can include combining a hydrophilic polyurethane prepolymer with the aqueous mixture. The method can include chemically reacting the hydrophilic polyurethane prepolymer with the aqueous mixture to create a foam mixture. Chemically reacting the hydrophilic polyurethane prepolymer with the aqueous mixture may generate a foaming agent that includes carbon dioxide.

Abstract: Apparatuses are described that provide for auxetic textile structures. An example auxetic textile structure includes an auxetic layer having an inner surface and an outer surface, wherein the auxetic layer comprises a plurality of high performance yarns. The auxetic textile structure further includes a plurality of dispersed elastic portions at least partially coupled to the inner surface of the auxetic layer, wherein the plurality of dispersed elastic portions in combination with the auxetic layer form a plurality of double layer structures distributed amongst a single layer of the auxetic layer. Each of the dispersed elastic portions comprises a plurality of elastic yarns.

Abstract: Methods, apparatuses, and systems associated with personal protective equipment are provided. An example mask may include an exterior layer, one or more mask straps coupled to the exterior layer, and a filter layer. An example method for manufacturing a protective garment may include providing a front segment, providing a back segment, and connecting the front segment and the back segment by at least forming a front raglan seam.