Bionylon having triple shape memory properties, and preparation method therefor

A method for preparing a bionylon having triple shape memory effects, the method comprising:

• generating amino acid containing a biomass-derived pyrrolidone group by reacting itaconic acid and a diamine;
• and
• generating a nylon copolymer through a condensation polymerization reaction of the amino acid containing the biomass-derived pyrrolidone group and α,ω-aliphatic amino acid;
• wherein the condensation polymerization reaction includes an amidation between (a) an amine group (—NH2) and carboxylic acid (—COOH) of the amino acid containing the biomass-derived pyrrolidone group and (b) carboxylic acid (—COOH) and an amine group (—NH2) of the α,ω-aliphatic amino acid;
• wherein the amidation generates a water molecule;
• wherein the condensation polymerization reaction includes providing the amino acid containing the biomass-derived pyrrolidone group and the α,ω-aliphatic amino acid to a reaction chamber under a nitrogen atmosphere;
• wherein a molar content ratio of the amino acid containing the biomass-derived pyrrolidone group to the α,ω-aliphatic amino acid, provided to the reaction chamber, is from 2:8 to 6:4;
• wherein the nylon copolymer has both a glass transition temperature (Tg) and a melting temperature (Tm) as phase transition temperatures when a storage modulus is measured according to a temperature change;
• and
• wherein the storage modulus is maintained to have a constant value at or above the melting temperature (Tm).

A method for preparing a bionylon having triple shape memory effects, the method comprising:

• generating amino acid containing a biomass-derived pyrrolidone group by reacting itaconic acid and a diamine;
• and
• generating a nylon copolymer in a condensation polymerization reaction of the amino acid containing the biomass-derived pyrrolidone group and α,ω-aliphatic amino acid;
• wherein the nylon copolymer comprises a melting temperature (Tm) of 101.4° C. to 167.6° C., a glass transition temperature (Tg) of 38.7° C. to 44.4° C., and an intrinsic viscosity of 1.16 ml/g to 1.18 ml/g;
• and
• wherein a molar content ratio of the amino acid containing the biomass-derived pyrrolidone group to the α,ω-aliphatic amino acid, as provided to the condensation polymerization reaction, is from 2:8 to 6:4.