The present invention provides multi-armed high MW polymers containing hydrophilic groups and one or more functional agents, and methods of preparing such polymers.

The present invention provides multi-armed high MW polymers containing hydrophilic groups and one or more functional agents, and methods of preparing such polymers.

A stable conductive myocardial patch with a negative Poisson's ratio structure is provided. The preparation method includes preparing a myocardial patch substrate with concave polygons as the structural units by weaving or knitting, and then a conductive coating is coated on the surface of the substrate. Alternatively, the yarns can be processed into conductive coated yarns first, and then used as the raw material to weave or knit a stable conductive myocardial patch with a negative Poisson's ratio structure. The prepared myocardial patch has a relative resistance change of less than 5% at 50% tensile strain. When the strain of the structural units is within 50%, the fabric exhibits a negative Poisson's ratio structure, which expands in the perpendicular direction of the tensile load. The fabric exhibits a negative Poisson's ratio effect and anisotropy of Young's modulus, which matches the mechanical behavior of natural myocardium.

A stable conductive myocardial patch with a negative Poisson's ratio structure is provided. The preparation method includes preparing a myocardial patch substrate with concave polygons as the structural units by weaving or knitting, and then a conductive coating is coated on the surface of the substrate. Alternatively, the yarns can be processed into conductive coated yarns first, and then used as the raw material to weave or knit a stable conductive myocardial patch with a negative Poisson's ratio structure. The prepared myocardial patch has a relative resistance change of less than 5% at 50% tensile strain. When the strain of the structural units is within 50%, the fabric exhibits a negative Poisson's ratio structure, which expands in the perpendicular direction of the tensile load. The fabric exhibits a negative Poisson's ratio effect and anisotropy of Young's modulus, which matches the mechanical behavior of natural myocardium.

A peptide-crosslinked protein-imprinted polymer, preparation method, and application thereof. One method comprises: 1) dissolving a main monomer, functional monomers, a peptide crosslinking agent, and a template protein in an aqueous solution to obtain a mixed solution; 2) adding an initiator or initiator system to the mixed solution to initiate the polymerization when the peptide crosslinking agent exists in a helix conformation to obtain a polymer; 3) eluting the template protein when the peptide chain exists in a coil conformation to obtain a peptide-crosslinked protein-imprinted polymer. The peptide crosslinking agent is a peptide with a polymerizable double bond at its both ends, and being capable of undergoing helix-coil transition. The polypeptide crosslinking agent is a polypeptide having an amino acid sequence which has a polymerizable double bond at its both ends, being capable of undergoing a helix-coil conformational transformation. The polypeptide cross-linked protein molecule-imprinted polymer disclosed in the invention not only can completely remove the template protein under mild conditions, but also can significantly improve the imprint effect of the protein molecule-imprinted polymer.

A peptide-crosslinked protein-imprinted polymer, preparation method, and application thereof. One method comprises: 1) dissolving a main monomer, functional monomers, a peptide crosslinking agent, and a template protein in an aqueous solution to obtain a mixed solution; 2) adding an initiator or initiator system to the mixed solution to initiate the polymerization when the peptide crosslinking agent exists in a helix conformation to obtain a polymer; 3) eluting the template protein when the peptide chain exists in a coil conformation to obtain a peptide-crosslinked protein-imprinted polymer. The peptide crosslinking agent is a peptide with a polymerizable double bond at its both ends, and being capable of undergoing helix-coil transition. The polypeptide crosslinking agent is a polypeptide having an amino acid sequence which has a polymerizable double bond at its both ends, being capable of undergoing a helix-coil conformational transformation. The polypeptide cross-linked protein molecule-imprinted polymer disclosed in the invention not only can completely remove the template protein under mild conditions, but also can significantly improve the imprint effect of the protein molecule-imprinted polymer.

The present invention relates to a rubber composition having excellent abrasion resistance and improved tensile and viscoelastic properties by controlling compatibility among rubber components, and a tire manufactured using the same.

The present invention relates to a rubber composition having excellent abrasion resistance and improved tensile and viscoelastic properties by controlling compatibility among rubber components, and a tire manufactured using the same.

Embodiments of this disclosure include polymerization processes that include contacting propylene and/or one or more (C4-C12)α-olefins in a reactor including a catalyst system. The catalyst system comprises a metal-ligand complex according to formula (I).

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Embodiments of this disclosure include polymerization processes that include contacting propylene and/or one or more (C4-C12)α-olefins in a reactor including a catalyst system. The catalyst system comprises a metal-ligand complex according to formula (I).

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