A connective or supportive sheath comprising, consisting of, or consisting essentially of a hollow tube having a circumferential or perimeter wall, the wall having an inner surface and an outer surface, the wall comprising interconnected, radially projecting, partitions, the partitions forming radially extending pores, the pores extending from said inner surface through said outer surface, and wherein the tube is comprised of, consists of, or consists essentially of a flexible or elastic polymer.

A tissue restoration composition in a colloidal phase, includes a copolymer in which a hydrophobic biocompatible polymer and a hydrophilic biocompatible polymer are polymerized and which is dispersed in water. The colloidal phase has increased viscosity by heating the copolymer dispersed in water. The colloidal phase has a viscosity, by the heating, of 20-200,000 cP.

A tissue restoration composition in a colloidal phase, includes a copolymer in which a hydrophobic biocompatible polymer and a hydrophilic biocompatible polymer are polymerized and which is dispersed in water. The colloidal phase has increased viscosity by heating the copolymer dispersed in water. The colloidal phase has a viscosity, by the heating, of 20-200,000 cP.

Compounds are based on polyether-modified polybutadiene, where the polyether-modified polybutadiene contains repeat units selected from the divalent radicals:

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The radical B has at least one ester group.

The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55≤P≤2.02. In the component (B), the talcum powder has a particle size D.sub.(50) satisfying: 1 μm≤D.sub.(50)≤2.6 μm. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180≤M≤670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55≤P≤2.02 as a matrix, adding a specific range of content of ultrafine talcum powder as a nucleating agent, and selecting the plasticizer of a specific molecular weight as a crystallization promotion agent, the prepared polylactic acid composite has a light transmittance T≥80%, a haze H≤40%, and a heat deflection temperature HDT≥90° C., having significantly improved heat resistance and transparency.

The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55≤P≤2.02. In the component (B), the talcum powder has a particle size D.sub.(50) satisfying: 1 μm≤D.sub.(50)≤2.6 μm. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180≤M≤670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55≤P≤2.02 as a matrix, adding a specific range of content of ultrafine talcum powder as a nucleating agent, and selecting the plasticizer of a specific molecular weight as a crystallization promotion agent, the prepared polylactic acid composite has a light transmittance T≥80%, a haze H≤40%, and a heat deflection temperature HDT≥90° C., having significantly improved heat resistance and transparency.

The present application relates to a composition, which comprises: (a) a photopolymerizable substance; (b) a thiol; (c) a photoinitiator; (d) a thermosensitive polymer; and (e) water, and can be used as a bio-ink for preparing a bio-hydrogel for direct-writing 3D printing. The present invention further relates to a method for preparing the composition, and a direct-writing 3D printing method using the composition.

The invention relates to a method for producing a polymer master batch and a polymer composition, wherein the method comprises providing at least one monomer capable of forming a poly(hydroxy carboxylic acid), providing a graphene nano-filler, mixing the monomer and the graphene nano-filler and letting the monomer polymerize in the presence of the graphene nano-filler. The polymer together with the graphene nano-filler is further blended with another polymer to form a polymer composite. The invention also relates to a polymer composition with graphene nano-filler and a composite material comprising a polymer composite with graphene nano-fillers.

The invention relates to a method for producing a polymer master batch and a polymer composition, wherein the method comprises providing at least one monomer capable of forming a poly(hydroxy carboxylic acid), providing a graphene nano-filler, mixing the monomer and the graphene nano-filler and letting the monomer polymerize in the presence of the graphene nano-filler. The polymer together with the graphene nano-filler is further blended with another polymer to form a polymer composite. The invention also relates to a polymer composition with graphene nano-filler and a composite material comprising a polymer composite with graphene nano-fillers.

A method for producing a thermoplastic resin composition, including: melt-kneading a mixture containing a polyester resin (A), a starch material (B), and water; and dewatering the melt-kneaded mixture to reduce a water content to 5% by weight or less. The mixture contains 25 to 55 parts by weight of the water per 100 parts by weight of a solid content of the starch material (B). A film containing a thermoplastic resin composition containing a biodegradable polyester resin (A) and a starch material (B), wherein the starch material (B) has a number-average particle diameter of 3 μm or less.