6 results about "Poly(propylene fumarate)" patented technology

The application belongs to the technical field of medical soft tissue adhesive, and discloses a degradable soft tissue adhesive and a preparation and use method thereof. A photoinitiator is dissolved in a crosslinking agent monomer to obtain a mixed solution; polypropylene fumarate is mixed into the mixed solution, and then bubbles are removed to obtain a mixed system A; polyethylene glycol is mixed into the mixed system A to prepare a polypropylene fumarate-based organic gel prepolymer precursor solution; and the polypropylene fumarate-based organic gel prepolymer precursor solution is subjected to ultrasonic treatment in the dark to disentangle long-chain structures; wherein the addition amount of the photoinitiator is 1% of the total mass of polypropylene fumarate and the crosslinking agent monomer, the mass ratio of polypropylene fumarate to the crosslinking agent monomer is 1: (1-2), and the volume of polyethylene glycol is 20%-50% of the volume of the mixed system A. The application significantly improves the mechanical properties and bonding strength of the adhesive by modifying polypropylene fumarate.

The application provides a polyester resin containing photoreactive dopamine and a preparation method and application thereof.The polyester resin containing photoreactive dopamine provided by the application is prepared from raw materials including dopamine methacrylamide (DMA), polypropylene fumarate (PPF), diethyl fumarate (DEF) and a photoinitiator.The dopamine molecules are integrated into the PPF crosslinking network structure through DMA, and the hydrophilicity of the material surface is significantly improved.The unsaturated polyester resin provided by the application can be applied to 3D printing technology based on face projection microstereolithography (PmuSL), the solidification forming process is simple, the three-dimensional structure is not limited, the application range is wide, and the final formed product can be used for further loading of bioactive substances, and has a wide application prospect in bone tissue engineering.The application further provides a preparation method and application of the polyester resin containing photoreactive dopamine.

Disclosed is a bioresorbable implant with enhanced bone ingrowth and tissue integration utilizing an inside-out resorption mechanism and a method to manufacture a bioresorbable implants for use in osteotomies and bone-soft tissue reconstruction surgeries. The bioresorbable implant includes a polymer A (e.g., an aliphatic polymer matrix) and / or poly(propylene fumarate)), a carbohydrate B (e.g., a bioresorbable natural carbohydrate filler) and a ceramic C. The implant may be a porous scaffold structures with suitable porosity, pore size, pore interconnectivity, and mechanical properties for enhanced osteoblast penetration and bone formation to fabricate tissue integrating bioresorbable implants. The implant may be shaped as wedges, bone void fillers, and soft tissue fixation implant like screws, rods and / or anchors. In some embodiments, the implant may be a putty.

The present application belongs to the technical field of polymer and luminescent material, and more particularly relates to a kind of stereolithography long-life room temperature phosphorescence material and its preparation and application.Long-life room temperature phosphorescence material includes: polypropylene fumarate, hyperbranched polyester acrylate and phosphorescent molecule LAD;The number average molecular weight of polypropylene fumarate is 2800-4000 g / mol;With the total amount of polypropylene fumarate and hyperbranched polyester acrylate parts, the mass fraction of polypropylene fumarate is ≥58%;The mass fraction of phosphorescent molecule is 0.08-0.15%.The present application significantly improves the phosphorescent lifetime of LAD by matching LAD with polypropylene fumarate, hyperbranched polyester acrylate resin system.

The invention relates to a hemostasis compound and application thereof in hemostasis, poly (propylene glycol fumarate) (PPF) and polyvinyl alcohol (PVA) sponge are blended to prepare an injectable and absorbable composite material with good flowability, mechanical property and hemostasis activity, and fluid is solidified through a cross-linking reaction and then fills a wound cavity to achieve a hemostasis effect. Compared with a traditional hemostatic material, the PPF-PVA compound shows clinical application potentials of injectability, adaptability, drug loading, healing promotion and low heat injury.

This invention relates to the field of nonwoven fabric technology, and provides a biodegradable antistatic nonwoven fabric and its preparation method. The biodegradable antistatic nonwoven fabric includes, from top to bottom, a first nonwoven base layer, an adhesive layer, an antibacterial layer, and a second nonwoven base layer. Both the first and second nonwoven base layers are provided with an antioxidant and moisture-absorbing coating. The antioxidant and moisture-absorbing coating is composed of the following components in parts by weight: 35-50 parts of polybutylene adipate, 30-40 parts of diethyl ether, 5-8 parts of phosphatidylethanolamine, 2-4 parts of polyvinyl acetate, 6-10 parts of polypropylene fumarate, and 1-3 parts of carboxymethyl cellulose. Phosphatidylethanolamine has good moisture absorption and antioxidant properties, which improves the antioxidant and moisture absorption properties of the first and second nonwoven base layers. The improved moisture absorption capacity improves the antistatic ability of the nonwoven fabric, and the improved antioxidant capacity improves the stability of the antibacterial layer on the nonwoven fabric, resulting in better antibacterial effect.