Nanocomposite body, method of manufacturing the same, and nanocomposite film including the nanocomposite body

A method of manufacturing a nanocomposite, the method comprising:

• reacting inorganic particles with a grafting polymer compound comprising polylactic acid (PLA) or represented by Formula 2 to form hybrid nanoparticles, as a first process, wherein the inorganic particles comprise silica (SiO2) particles, titania (TiO2) particles, zinc oxide (ZnO2) particles, zirconia (ZrO2) particles, alumina (Al2O3) particles, graphene, and/or carbon nanotubes (CNTs);
• and
• reacting the hybrid nanoparticles with a polymer matrix comprising polyurethane, polyamide, polycarbonate, polyether, or a combination thereof, as a second process:
• wherein, in Formula 2,
• A1 is —O—or —C(═O)O—,
• R1 to R4 are each independently selected from:
• a hydrogen, a deuterium, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, and a C1-C20 alkoxy group;
• and
• a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, and a C1-C20 alkoxy group, each substituted with at least one selected from a deuterium, —F, —CI, —Br, —I, a hydroxyl group, a cyano group, an epoxy group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C1-C20 alkyl group, and a C1-C20 alkoxy group,
• m1 is an integer of 1 to 10,
• n1 is an integer of 1 to 1,000,
• Z1 is —O(Q1), —S(Q1), or an epoxy group, wherein Q1 is selected from a deuterium, —F, —CI, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, a biphenyl group, and a terphenyl group, and
• Z2 is a substituent that reacts with the polymer matrix, and
• wherein a reaction product of the reacting of the inorganic particles with the grafting polymer compound comprises a grafting polymer chain of the grafting polymer compound bonded to the inorganic particle with a chemical bond directly to oxygen, silicon, or sulfur, and
• wherein the inorganic particles comprise a first functional group on a surface thereof and the first functional group reacts with Z1 in Formula 2.

A nanocomposite film comprising a nanocomposite comprising:

• inorganic particles, wherein the inorganic particles comprise silica (SiO2) particles, titania (TiO2) particles, zinc oxide (ZnO2) particles, zirconia (ZrO2) particles, alumina (Al2O3) particles, graphene, and/or carbon nanotubes (CNTs);
• a polymer matrix comprising polyurethane, polyamide, polycarbonate, polyether, or a combination thereof;
• and
• grafting polymer chains each of which comprises a polyol structure,
• wherein the grafting polymer chains are bonded to the inorganic particles and the polymer matrix with a chemical bond,
• wherein the grafting polymer chains comprise polyethylene glycol (PEG), polylactic acid (PLA) or are represented by Formula 1:
• wherein, in Formula 1,
• A1 is —O—or —C(═O)O—,
• X1 and X2 are each independently selected from:
• a single bond, —C(═O)—, —O—, a C1-C20 alkylene group, a C3-C10 cycloalkylene group, a C3-C10 cycloalkenylene group, a C2-C10 heterocycloalkylene group, a C2-C10 heterocycloalkenylene group, a C6-C20 arylene group, and a C2-C20 heteroarylene group;
• and
• a C1-C20 alkylene group, a C3-C10 cycloalkylene group, a C3-C10 cycloalkenylene group, a C2-C10 heterocycloalkylene group, a C2-C10 heterocycloalkenylene group, a C6-C20 arylene group, and a C2-C20 heteroarylene group, each substituted with at least one selected from a deuterium, —F, —CI, —Br, —I, a hydroxyl group, a cyano group, an epoxy group, nitro group, an amidino group, a hydrazino group, a hydrazono group, a C1-C20 alkyl group, a C1-C20 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkyl group, a C2-C10 heterocycloalkenyl group, a C6-C20 aryl group, and a C2-C20 heteroaryl group,
• y1 is an integer of 1 to 5,
• when y1 is 2 or greater, structures of X1 are identical to or different from each other,
• y2 is an integer of 1 to 5,
• when y2 is 2 or greater, structures of X2 are identical to or different from each other,
• R1 to R4 are each independently selected from:
• a hydrogen, a deuterium, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, and a C1-C20 alkoxy group;
• and
• a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, and a C1-C20 alkoxy group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, an epoxy group, a nitro group, amidino group, a hydrazino group, a hydrazono group, a C1-C20 alkyl group, and a C1-C20 alkoxy group,
• m1 is an integer of 1 to 10,
• when m1 is 2 or greater, structures in parentheses are identical to or different from each other,
• n1 is an integer of 1 to 1,000,
• when n1 is 2 or greater, structures in parentheses are identical to or different from each other,
• * denotes a binding site to the inorganic particles,
• *′ denotes a binding site to the polymer matrix, and
• wherein X1 is bonded to the inorganic particles with a chemical bond directly to oxygen, silicon, or sulfur, and
• wherein an elastic modulus of the film is in a range of about 30 MPa to about 100 MPa.