A method for preparing an aerogel comprising nano attapulgite and phenolic aldehyde and a method for preparing abrasion-resistant vehicle tire. 80-100 weight distributions of rubber, 3-8 weight distributions of SiO.sub.2.nH.sub.2O, 3-6 weight distributions of an anti-aging agent, 3-4 weight distributions of a heat stabilizer, 3-5 weight distributions of a compatibilizing agent, and 3-12 weight distributions of the aerogel comprising the nano attapulgite and the phenolic aldehyde is selected as a raw material of the abrasion-resistant rubber material to prepare rubber composite material for the abrasion-resistant vehicle tire.

A composition includes a cartilage component for regeneration of cartilage and a manufacturing method therefor. A composition for regeneration of cartilage, in which a micronized cartilage powder is physically mixed with a biocompatible polymer or a chemically crosslinked biocompatible polymer. When applied, the composition can increase morphological retention and ease of use at cartilage injury sites.

The invention relates to beads and a composition comprising an aqueous phase comprising a plurality of beads, the beads comprising or consisting in a hydrogel matrix comprising at least one carboxyalkyl chitosan having glucosamine units, N-acetyl-glucosamine units and glucosamine units substituted with a carboxyalkyl group, the carboxyalkyl chitosan being crosslinked by covalent bonds between the carboxyalkyl chitosan chains and/or co-crosslinked by covalent bonds with one or more other polymers.

The invention also relates to processes for their preparation and applications thereof.

A biopolymer film is provided that comprises a combination of crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio, but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.

A hyaluronic acid-based aqueous gel including crosslinked hyaluronic acid and from 30 to 70% by mass with respect to the total mass of hyaluronic acid, of a water-soluble hyaluronic acid. A method for preparing an aqueous gel having at least a crosslinked hyaluronic acid and at least an uncrosslinked hyaluronic acid. Also an aqueous gel obtainable by the method compositions, a cosmetic and/or dermatological composition including the aqueous gels, and a kit comprising a pre-filled syringe comprising the aqueous gel or said composition. These gels and compositions are useful in particular for treating an alteration in the surface appearance of the skin and/or for augmenting and/or filling soft tissue.

According to the present disclosure, a method of preparing polymeric microparticles comprising further crosslinking with an organic crosslinking agent after crosslinking with metal ions, polymeric microparticles, medical compositions, cosmetic compositions, medical articles and cosmetic articles comprising the same can be provided.

Textile compositions comprising at least one filamentous fungus are disclosed, as are methods for making and using such textile compositions. Embodiments of the textile compositions generally include at least one of a plasticizer, a polymer, and a crosslinker, in addition to the filamentous fungus. The disclosed textile compositions are particularly useful as analogs or substitutes for conventional textile compositions, including but not limited to leather.

The present invention provides a temperature sensitive hydrogel composition including a nucleic acid and chitosan. Since the hydrogel has excellent biocompatibility and biostability, and simultaneously has sol-gel phase transition properties depending on temperature changes, the hydrogel is present in a sol state at room temperature and becomes a gel when the hydrogel is injected into the human body or applied on the surface of epithelial skin and the temperature increases. Thus, the temperature-sensitive hydrogel of the present invention can be directly injected into and applied on certain parts requiring treatment and the retention and attaching time of a drug is increased through gelation depending on the temperature so that drug efficacy is sufficiently exhibited. Therefore, it is expected that the temperature-sensitive hydrogel of the present invention can be utilized for various treatments.

A biocompatible membrane comprised of alginate and hyaluronate. The membrane may be used to prevent unwanted scarring after surgery. The tissue adherence and the rate of bioresorption of the membrane may be modified through an external stimulus comprising a sequestering agent and a viscosity modifier.

A shear-thinning hydrogel composition includes: a first polymer chain including: (i) a first plurality of units each having at least one of a monosaccharide and an amino acid; and (ii) a cross-linking group bound to the at least one of the monosaccharide and the amino acid of one of the first plurality of units via conversion of a carboxyl group of the unit to a peptide bond; a second polymer chain including a second plurality of the units; and a cross-linking additive connecting one of the second plurality of units to the first polymer chain via the cross-linking group.