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Composite material of poly(p-dioxanone)/inorganic nano-fiber and preparation method thereof

A polydioxanone and inorganic nanofiber technology, applied in the field of polydioxanone/inorganic nanofiber composite materials and their preparation, can solve the problem of uneven dispersion, easy formation, and the improvement of PPDO performance by up to Less than ideal effect and other problems, to achieve the effect of improving melt strength, improving processability, and good interfacial compatibility

Active Publication Date: 2010-09-15
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this PPDO / layered clay nanocomposite prepared by in-situ polymerization or melt blending method effectively improves the crystallization rate and the toughness of the material, due to the lamellae and lamellae of the montmorillonite layered clay There is a strong ionic bond between them, so it is difficult to completely peel off the layered clay sheets in the PPDO matrix during the preparation of composite materials, and it is easy to form large-sized aggregates, making them unevenly dispersed
It is precisely because of the characteristics of the morphology of the layered clay itself and its dispersion in the matrix material that the improvement of some properties of PPDO cannot achieve the desired effect.

Method used

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  • Composite material of poly(p-dioxanone)/inorganic nano-fiber and preparation method thereof
  • Composite material of poly(p-dioxanone)/inorganic nano-fiber and preparation method thereof
  • Composite material of poly(p-dioxanone)/inorganic nano-fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First add 10g of sepiolite to 400ml of deionized water, stir at high speed for 1 hour to obtain a stable suspension, then dissolve 3g of cetyltrimethylammonium bromide in 100ml of deionized water, and then slowly drop the latter Add it into the suspension, continue to stir at high speed and raise the temperature to 80°C, react for 12 hours, filter with suction, and wash with deionized water repeatedly until there is no bromide ion in the filtrate with 0.1mol / L silver nitrate solution; finally freeze-dry To the constant weight of the sepiolite, grind it through a 200-mesh sieve.

[0026] Add 100 g of p-dioxanone monomer and 3 g of treated organic sepiolite into a reaction bottle protected by a nitrogen atmosphere, stir and mix and swell at 50°C for 1 h, and then ultrasonically disperse for 0.5 h to make the sea foam The stone nanofibers were fully unbundled and dispersed, then the temperature was raised to 60° C., 0.001 triethylaluminum was added in terms of monomer mole...

Embodiment 2

[0028] First dry the chrysotile in a vacuum oven at 100°C for 48 hours, then add 10g of dried chrysoprite and 5g of silane coupling agent KH550 into 500ml of toluene, stir at high speed and raise the temperature to 110°C and reflux for 12 hours. Then filter and extract with toluene for 48 hours, and finally vacuum-dry at 70°C until the chrysoprite has constant weight, and grind it through a 200-mesh sieve.

[0029] Add 100 g of p-dioxanone monomer and 0.5 g of treated organic chemical fiber serpentine into a reaction bottle protected by a nitrogen atmosphere, stir, mix and swell at 50°C for 2 h, and then ultrasonically disperse for 0.5 h to make the fiber The serpentine nanofibers were fully unbundled and dispersed, then the temperature was raised to 80° C., 0.0005 stannous octoate was added in terms of monomer moles, and the polydioxanone / inorganic nanofiber composite material was obtained after reacting for 48 hours.

Embodiment 3

[0031] First dry the attapulgite in a vacuum oven at 100°C for 48 hours, then add 10g of the dried attapulgite and 5g of titanate coupling agent NDZ102 into 500ml of isopropanol, stir at high speed and heat to 80°C for reflux for 12h, then Filter and extract with isopropanol for 48 hours, and finally vacuum-dry at 70°C until the attapulgite has constant weight, and grind through a 200-mesh sieve.

[0032] Add 100 g of p-dioxanone monomer and 5 g of the treated organic attapulgite into a reaction bottle protected by a nitrogen atmosphere, stir, mix and swell at 50°C for 2 hours, and then ultrasonically disperse for 1 hour, so that the attapulgite nanofibers Fully unbundle and disperse, then raise the temperature to 80°C, add 0.00125 aluminum isopropoxide in terms of monomer moles, and react for 12 hours to obtain a polydioxanone / inorganic nanofiber composite material.

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Abstract

The invention discloses a composite material of poly(p-dioxanone) / inorganic nano-fiber. The composite material is prepared by mixing a poly(p-dioxanone) matrix material and the inorganic nano-fiber based on the weight ratio of 0.5-10:100, wherein, the Young modulus of the composite material is 364-942MPa. The invention further discloses a preparation method of the composite material. In the invention, the inorganic nano-fiber contained in the composite material of the invention has high length-diameter ratio and weak aggregation force among the fibers, and the fiber is dispersed in the composite material in a nanometer size, thus significantly enhancing the melt strength of the material, improving the processability, and obviously increasing the strength of the composite material; and the preparation method is mature, simple, feasible and easily popularized.

Description

technical field [0001] The invention belongs to the technical field of composite materials composed of polymers and inorganic nano fillers and their preparation, and specifically relates to a polydioxanone / inorganic nanofiber composite material and a preparation method thereof. Background technique [0002] Polydioxanone (PPDO) is a linear aliphatic polyether ester with excellent biocompatibility, bioabsorbability and biodegradability. Due to the unique ether bond structure, PPDO has more excellent toughness and hydrophilicity than other biodegradable polyesters, making it successfully used in the manufacture of surgical sutures, bone plates and tissue repair materials, such as screws, hooks, sheets and The field of surgical instruments such as forceps. In addition, its biodegradability in nature has also been confirmed so far (Nishida, H.; Konno, M.; Ikeda, A.; Tokiwa, Y. Polym. Degrad. Stab. 2000, 68, 205-217). Therefore, under the premise that the current synthesis cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08G63/08C08K7/10C08K9/00
Inventor 杨科珂邱志成张静静王玉忠汪秀丽陈思翀牛莹黄才利
Owner SICHUAN UNIV
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