Provided is a polymer comprising a hydrolysable polymer backbone, the polymer backbone comprising (i) monomer units comprising a hydrophobic side chain; and (ii) monomer units comprising a cationic side chain; wherein the cationic side chain comprises a polyamine with at least one tertiary amine and only a single nucleophilic center, optionally at the terminus of the polyamine, as well as a method of preparing said polymer, and a method of delivering a nucleic acid and/or polypeptide to a cell using the polymer.

Provided is a polymer comprising a hydrolysable polymer backbone, the polymer backbone comprising (i) monomer units comprising a hydrophobic side chain; and (ii) monomer units comprising a cationic side chain; wherein the cationic side chain comprises a polyamine with at least one tertiary amine and only a single nucleophilic center, optionally at the terminus of the polyamine, as well as a method of preparing said polymer, and a method of delivering a nucleic acid and/or polypeptide to a cell using the polymer.

A polyamide composition comprising a base polyamide and an elastomer concentrate comprising: 20-80 wt % of an elastomeric aliphatic polyether having a molecular weight ranging from 400-4000 g/mol; and 80-20 wt % of a concentrate polyamide. The polyamide composition has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.

A method for preparing a high molecular weight furan polyamide includes the following steps: 1) charging dimethyl furan dicarboxylate and aliphatic diamine into a reaction container at equal molar weight, and increasing the temperature to 60-120° C. under inert gas; 2) adding a catalyst when the reaction system becomes transparent liquid, increasing the temperature to 140-150° C., and keeping at an atmospheric pressure or a pressure of 41-61 kPa for 0-1 h; and then increasing the temperature to 190-200° C. and reacting for 1-3 h; and 3) depressurizing the system to 3-16 kPa for 0-3 h; and finally, reducing the pressure to 0.003-0.100 KPa for 1-3 h to obtain the high molecular weight furan polyamide.

A method for preparing a high molecular weight furan polyamide includes the following steps: 1) charging dimethyl furan dicarboxylate and aliphatic diamine into a reaction container at equal molar weight, and increasing the temperature to 60-120° C. under inert gas; 2) adding a catalyst when the reaction system becomes transparent liquid, increasing the temperature to 140-150° C., and keeping at an atmospheric pressure or a pressure of 41-61 kPa for 0-1 h; and then increasing the temperature to 190-200° C. and reacting for 1-3 h; and 3) depressurizing the system to 3-16 kPa for 0-3 h; and finally, reducing the pressure to 0.003-0.100 KPa for 1-3 h to obtain the high molecular weight furan polyamide.

Provided herein are compositions comprising panthenol-citrate containing materials. In particular, panthenol citrate compounds, oligomers, and polymers, and methods of use and synthesis thereof, are provided herein. Panthenol-citrate containing materials are a class of nontoxic, photoluminescent-chromophore-containing compounds, oligomers, and polymers with high absorption in the UVA and UVB range that can be incorporated and/or engineered into a variety of optically-active biomaterials (e.g., sunscreen products).

The present disclosure provides a tire having excellent durability during high speed running. A tire including a sidewall portion including a thermoplastic elastomer composition having a specific heat capacity of 1.7 J/ (g .Math.K) or less, the tire having a depression with a depth of 0.2 to 3.0 mm and/or a projection with a height of 0.2 to 3.0 mm between the tread ground contact edge and the tire maximum width position of the sidewall portion.

A metal adsorbent that includes silver-decorated graphene nano-platelets and a polymer matrix that comprises polyamide, wherein the metal adsorbent is a highly porous material with a specific surface area of 200 to 300 m.sup.2/g and an average pore size of 50 to 100 Å, which effective removes heavy metals and cations from a liquid. Various embodiments of the metal adsorbent and a method of making thereof are also provided.

An apparel textile yarn includes a polyamide. The polyamide includes a nylon and a polyetheramine. The polyetheramine has a molecular weight of at least 1500 and an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine. The polyamide may have a moisture regain ranging from about 10% to about 30%.

An apparel textile yarn includes a polyamide. The polyamide includes a nylon and a polyetheramine. The polyetheramine has a molecular weight of at least 1500 and an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine. The polyamide may have a moisture regain ranging from about 10% to about 30%.