Medical material
Technical field
The invention belongs to technical field of macromolecules, and in particular to a kind of medical material.
Background technology
The preparation of macromolecular fibre generally comprises material modification and obtains modifier, then carries out spinning;Or modifier again with
Spinning is carried out again after the mixing of other additives.Existing medical material is generally cotton fiber, because its biocompatibility is preferable;But
Be cotton fiber all for short fibre, mechanical property is poor, and wearability is low.Olefin(e) fibre yield is larger, and cost is very low, but due to
Its strong inert, poor biocompatibility, and it is not used as medical material.Therefore it needs to be modified it, using new technology, in alkene
On the basis of prepare good biocompatibility, wearability are strong, at low cost composite fiber product as medical material.
Invention content
The object of the present invention is to provide a kind of medical materials, have excellent biocompatibility.
To achieve the above object of the invention, the technical solution adopted by the present invention is:
A kind of medical material, is prepared by the following manner:
(1) polyethylene, polypropylene, methine succinic acid and epoxy prepolymer are uniformly mixed, added through screw rod melting extrusion
Olefin particles are prepared in work;Then by olefin particles and dimethyl tin oxide, 2- acrylamide-2-methylpro panesulfonic acids, uncle
Butyl lithium, isomerous tridecanol polyoxyethylene ether are uniformly mixed, and obtain compositions of olefines, then obtain olefin(e) fibre through melt spinning;
Polytetrafluoroethylparticle particle is mixed with five nitric hydrate bismuths, disodium hydrogen phosphate, uramit, acrylamide, potassium carbonate
Afterwards using melt spinning method, polytetrafluoroethylene fibre is prepared;By olefin(e) fibre, polytetrafluoroethylene fibre according to 4: 1 matter
Amount is more blended than carrying out, and be supported fiber;
Bisphenol A cyanate ester monomer is added in reactor, 90~95 DEG C are reacted 10~12 minutes, and it is sweet to add in three shrinks
Oil base cyamelide ester monomer is warming up to 120~125 DEG C, adds in nonylphenol polyoxyethylene ether and australene, reaction 30~35
Minute prepares epoxy prepolymer;
(2) it is dissolved in mixed liquor after natural silk degumming, infra-red drying obtains film after 1~1.5 hour;Then film is placed in carbon
It in sour hydrogen sodium water solution, is placed in clear water again after 20~30 minutes, dialysis obtains silk fibroin protein solution in 1 hour;Adjust fibroin egg
The mass concentration of white solution is 35~40%;Then nonylphenol polyoxyethylene ether, tetraethoxysilane and acrylic acid fourth are added in
Ester stirs 40~55 minutes;Then chitosan is added in, stirring obtains spinning solution in 10 minutes, silk fibroin is obtained using Static Spinning
Dimension;The mixed liquor is made of formic acid, water, lithium bromide and TRIS buffer;
(3) hyaluronic acid is added in half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, stirring 15~25
Polyethylene glycol and modified Nano oyster shell whiting are added in after minute, stirring adds in trifluoromethanesulfonic acid lanthanum and imidazoles after 35~55 minutes,
It is stirred 1 hour in 80 DEG C, obtains adhesive;
The modified Nano oyster shell whiting is prepared by the following manner:Raw oyster shell whiting is existed after mixing with titanium dioxide
700 DEG C are sintered 45~55 minutes, are then comminuted into the powder that average grain diameter is 40 nanometers;Powder is put into container, adds in powder
The ethyl alcohol of last 10 times of weight and the hydroxy-terminated polysiloxane of powder weight 0.6% stir 35~45 minutes, then add in powder
The methyl p-hydroxybenzoate of weight 0.4% stirs 55~65 minutes, last drying to obtain modified Nano oyster shell whiting;
(4) adhesive is coated on support fiber surface, 70 DEG C are heated 5~8 minutes;Then it is compound with silk fiber, heat
Pressure obtains composite fibre, and composite fibre progress sterilization treatment finally is obtained medical material;The adhesive is located at support fiber
Between silk fiber;The pressure of the hot pressing is 0.1MPa, and temperature is 85 DEG C, and the time is 18~22 minutes.
In above-mentioned technical proposal, in step (1), the reactive extrursion temperature of screw rod melting extrusion processing is 180~200 DEG C,
Screw speed control is 110~115 revs/min, and residence time of the material in screw rod is 5~6 minutes;Melt spinning obtains alkene
Temperature is 210~220 DEG C during fiber, and spinning speed is 800~900 ms/min;Melt spinning obtains temperature during polytetrafluoroethylene fibre
It is 315~330 DEG C to spend, and spinning speed is 600~700 ms/min;Polyethylene, polypropylene, methine succinic acid and epoxy prepolymer
Mass ratio be 1: 0.6: 0.32: 0.22;Olefin particles and dimethyl tin oxide, 2- acrylamide-2-methylpro panesulfonic acids, uncle
Butyl lithium, isomerous tridecanol polyoxyethylene ether mass ratio be 1: 0.002: 0.2: 0.005: 0.15;Polytetrafluoroethylparticle particle with
Five nitric hydrate bismuths, disodium hydrogen phosphate, uramit, acrylamide, potassium carbonate mass ratio be 1: 0.08: 0.12:
0.18∶0.22∶0.11;Bisphenol A cyanate ester monomer, triglycidyl group cyamelide ester monomer, Nonyl pheno
The mass ratio of ether and australene is 1: 1.6: 0.3: 0.1.
In above-mentioned technical proposal, in step (2), the technological parameter of the Static Spinning is:15~25 kilovolts of voltage, receive away from
From 8~12 centimetres, liquid inventory is 0.3~0.4mL/h;The mass concentration of sodium bicarbonate aqueous solution is 8%;Fibroin albumen, nonyl
Base phenol polyethenoxy ether, tetraethoxysilane, butyl acrylate, chitosan mass ratio be 1: 0.4: 0.3: 0.1: 0.3;First
Acid, water, lithium bromide and TRIS buffer mass ratio be 1: 5: 0.6: 2.
In above-mentioned technical proposal, in step (3), the mass ratio of raw oyster shell whiting and titanium dioxide is 5: 2;The poly- silica of terminal hydroxy group
The molecular weight of alkane is 900~1100;Hyaluronic acid, half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, poly- second two
Alcohol, modified Nano oyster shell whiting, trifluoromethanesulfonic acid lanthanum, imidazoles mass ratio be 1: 5: 0.6: 0.01: 0.005: 0.1.The present invention's
Hydroxy-terminated polysiloxane is linear structure, and hydroxyl is contained at both ends, has excellent adhesion property, at the surface to inorganic material
Reason can enhance the compatibility of inorganic matter and remaining organic principle;The present invention requires the molecular weight of polysiloxanes, molecular weight
The too low adhesion properties that can influence adhesive, it is excessively high, influence the dispersing uniformity of modified oyster shell whiting.The present invention is fine using fibroin
The surface as medical material is tieed up, with excellent biocompatibility, available for treatment of wounds, tissue wrapping, is utilized simultaneously
Synthetic fibers overcome the defects of fibroin fiber mechanical strength is poor, by adhesive by fibroin fiber with propping up as backing material
It supports fiber to combine, becomes stable entirety, while also there is iris action after adhesive film forming, on the one hand prevent fibroin fiber quilt
Pollution, in addition prevents the infiltrations such as tissue fluid, blood.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art:
(1) present invention is used using polyethylene, polypropylene as primary raw material, and by adding rational material, melt spinning obtains
To olefin(e) fibre, solve the problems, such as that existing olefin(e) fibre processability is poor, mechanical strength is low, particularly modified alkene is fine
Dimension has certain biocompatibility, and additive is to the human body either harmless existing polyethylene or poly- of overcoming of animal body
Additive existing for propylene modified particle reveals intoxicating problem;Epoxy prepolymer is granulated, and improves the strand of olefin polymer
Rigidity improves its mechanical property and heat resistance, can increase the compatible of alkene and epoxy prepolymer using methine succinic acid
Property puies forward the stability of entire polymer;Small molecule modifier is recycled, to olefin-modified, alkene can not reduced in melt-spun
Its biocompatibility and resistance to ag(e)ing are improved on the basis of mechanical property.
(2) present invention greatly improves the wearability of medical material using polytetrafluoroethylene fibre, while in melt-spun mistake
Micropore on the one hand is formed on polytetrafluoroethylene fibre surface using adding ingredient in journey, on the one hand increases its surface-active, is solved
It has determined existing polytetrafluoroethylene fibre strong inert, can not be compatible with other fibers the problem of, adhesive can penetrate into micropore,
It improves fibroin fiber and supports the binding force of fiber, increase the stability and stress balance of medical material.
(3) for medical material of the invention by reasonably designing, functional surfaces have excellent biocompatibility, assist mask
There are good mechanical property and wearability;And prepare conveniently, pass through melt-spun, electrostatic spinning equipment, you can easily prepare;It is conducive to
Industrial applications.
Specific embodiment
With reference to embodiment, the invention will be further described:
A kind of one medical material of embodiment, is prepared by the following manner:
(1) by mass ratio be 1: 0.6: 0.32: 0.22 polyethylene, polypropylene, methine succinic acid and epoxy prepolymer
It is uniformly mixed, olefin particles is obtained through screw rod melting extrusion;Then by mass ratio be 1: 0.002: 0.2: 0.005: 0.15 alkene
Hydrocarbon particle, dimethyl tin oxide, 2- acrylamide-2-methylpro panesulfonic acids, tert-butyl lithium, isomerous tridecanol polyoxyethylene ether mix
It closes uniformly, obtains compositions of olefines, then olefin(e) fibre is obtained through melt spinning;It is 1: 0.08: 0.12: 0.18 by mass ratio:
0.22: 0.11 polytetrafluoroethylparticle particle, five nitric hydrate bismuths, disodium hydrogen phosphate, uramit, acrylamide, carbon
Using melt spinning method after sour potassium mixing, polytetrafluoroethylene fibre is prepared;By olefin(e) fibre, polytetrafluoroethylene fibre according to
4: 1 mass ratio progress is blended, and be supported fiber;Bisphenol A cyanate ester monomer is added in reactor, 95 DEG C of reactions 10
Minute, triglycidyl group cyamelide ester monomer is added in, is warming up to 125 DEG C, adds in nonylphenol polyoxyethylene ether and australene
Alkene, reaction prepare epoxy prepolymer in 30 minutes;Bisphenol A cyanate ester monomer, triglycidyl group cyamelide ester monomer, nonyl
The mass ratio of base phenol polyethenoxy ether and australene is 1: 1.6: 0.3: 0.1;The reactive extrursion of above-mentioned screw rod melting extrusion processing
Temperature is 180~200 DEG C, and screw speed control is 110 revs/min, and residence time of the material in screw rod is 6 minutes;Melting is spun
It is 210~220 DEG C that silk, which obtains temperature during olefin(e) fibre, and spinning speed is 800 ms/min;Melt spinning obtains fibrillated polytetrafluoroethylene
Temperature is 315~330 DEG C during dimension, and spinning speed is 700 ms/min;
(2) it is dissolved in mixed liquor after natural silk degumming, infra-red drying obtains film after 1 hour;Then it is film merging quality is dense
It spends in the sodium bicarbonate aqueous solution for 8%, is placed in clear water again after 30 minutes, dialysis obtains silk fibroin protein solution in 1 hour;Adjustment
The mass concentration of silk fibroin protein solution is 35%;Then nonylphenol polyoxyethylene ether, tetraethoxysilane and acrylic acid are added in
Butyl ester stirs 55 minutes;Then chitosan is added in, stirring obtains spinning solution in 10 minutes, silk fiber is obtained using Static Spinning;
The mixed liquor is made of formic acid, water, lithium bromide and the TRIS buffer that mass ratio is 1: 5: 0.6: 2;
Fibroin albumen, nonylphenol polyoxyethylene ether, tetraethoxysilane, butyl acrylate, chitosan mass ratio be 1: 0.4: 0.3:
0.1∶0.3;The technological parameter of above-mentioned Static Spinning is:15 kilovolts of voltage receives 12 centimetres of distance, liquid inventory 0.3mL/h;
(3) hyaluronic acid is added in half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, stirred 15 minutes
Polyethylene glycol and modified Nano oyster shell whiting are added in afterwards, and stirring adds in trifluoromethanesulfonic acid lanthanum and imidazoles after~55 minutes, in 80 DEG C
Stirring 1 hour, obtains adhesive;Hyaluronic acid, half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, poly- second two
Alcohol, modified Nano oyster shell whiting, trifluoromethanesulfonic acid lanthanum, imidazoles mass ratio be 1: 5: 0.6: 0.01: 0.005: 0.1;
The life oyster shell whiting that mass ratio is 5: 2 with titanium dioxide at 700 DEG C is sintered 55 minutes after mixing, is then crushed
Into the powder that average grain diameter is 40 nanometers;Powder is put into container, adds in the ethyl alcohol and powder weight of 10 times of powder weight
0.6% hydroxy-terminated polysiloxane stirs 35 minutes, then adds in the methyl p-hydroxybenzoate of powder weight 0.4%, stirring
65 minutes, last drying to obtain modified Nano oyster shell whiting;The molecular weight of hydroxy-terminated polysiloxane is 900~1100;
(4) adhesive is coated on support fiber surface, 70 DEG C are heated 8 minutes;Then compound with silk fiber, hot pressing obtains
To composite fibre, sterilization treatment obtains medical material;The adhesive is located between support fiber and silk fiber;The hot pressing
Pressure 0.1MPa, 85 DEG C of temperature, 18 minutes time.
A kind of two medical material of embodiment, is prepared by the following manner:
(1) by mass ratio be 1: 0.6: 0.32: 0.22 polyethylene, polypropylene, methine succinic acid and epoxy prepolymer
It is uniformly mixed, is processed through screw rod melting extrusion, olefin particles are prepared;Then it is 1: 0.002: 0.2: 0.005 by mass ratio:
0.15 olefin particles, dimethyl tin oxide, 2- acrylamide-2-methylpro panesulfonic acids, tert-butyl lithium, isomerous tridecanol polyoxy
Vinethene is uniformly mixed, and obtains compositions of olefines, then obtain olefin(e) fibre through melt spinning;It is 1: 0.08: 0.12 by mass ratio:
0.18: 0.22: 0.11 polytetrafluoroethylparticle particle, five nitric hydrate bismuths, disodium hydrogen phosphate, uramit, acryloyl
Using melt spinning method after amine, potassium carbonate mixing, polytetrafluoroethylene fibre is prepared;By olefin(e) fibre, fibrillated polytetrafluoroethylene
Dimension is blended according to 4: 1 mass ratio progress, and be supported fiber;Bisphenol A cyanate ester monomer is added in reactor, 90 DEG C
Reaction 12 minutes adds in triglycidyl group cyamelide ester monomer, is warming up to 120 DEG C, adds in nonylphenol polyoxyethylene ether
With australene, reaction prepares epoxy prepolymer in 30 minutes;Bisphenol A cyanate ester monomer, triglycidyl group isocyanuric acid ester
The mass ratio of monomer, nonylphenol polyoxyethylene ether and australene is 1: 1.6: 0.3: 0.1;Above-mentioned screw rod melting extrusion is processed anti-
It is 180~200 DEG C to answer extrusion temperature, and screw speed control is 115 revs/min, and residence time of the material in screw rod is 6 minutes;
It is 210~220 DEG C that melt spinning, which obtains temperature during olefin(e) fibre, and spinning speed is 800 ms/min;Melt spinning obtains polytetrafluoro
Temperature is 315~330 DEG C during vinyl fiber, and spinning speed is 600 ms/min;
(2) it is dissolved in mixed liquor after natural silk degumming, infra-red drying obtains film after 1 hour;Then it is film merging quality is dense
It spends in the sodium bicarbonate aqueous solution for 8%, is placed in clear water again after 30 minutes, dialysis obtains silk fibroin protein solution in 1 hour;Adjustment
The mass concentration of silk fibroin protein solution is 40%;Then nonylphenol polyoxyethylene ether, tetraethoxysilane and acrylic acid are added in
Butyl ester stirs 40 minutes;Then chitosan is added in, stirring obtains spinning solution in 10 minutes, silk fiber is obtained using Static Spinning;
The mixed liquor is made of formic acid, water, lithium bromide and the TRIS buffer that mass ratio is 1: 5: 0.6: 2;
Fibroin albumen, nonylphenol polyoxyethylene ether, tetraethoxysilane, butyl acrylate, chitosan mass ratio be 1: 0.4: 0.3:
0.1∶0.3;The technological parameter of above-mentioned Static Spinning is:25 kilovolts of voltage receives 8 centimetres of distance, liquid inventory 0.4mL/h;
(3) hyaluronic acid is added in half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, after 15 points of stirring
Polyethylene glycol and modified Nano oyster shell whiting are added in, stirring adds in trifluoromethanesulfonic acid lanthanum and imidazoles after 55 minutes, 80 DEG C of stirrings 1 are small
When obtain adhesive;Hyaluronic acid, half sodium salt buffer solution of 4- (2- ethoxys) -1- piperazine ethanesulfonic acids, polyethylene glycol, modification are received
Rice oyster shell whiting, trifluoromethanesulfonic acid lanthanum, imidazoles mass ratio be 1: 5: 0.6: 0.01: 0.005: 0.1;By the life that mass ratio is 5: 2
Oyster shell whiting is sintered 55 minutes after being mixed with titanium dioxide at 700 DEG C, is then comminuted into the powder that average grain diameter is 40 nanometers;By powder
End is put into container, adds in the ethyl alcohol of 10 times of powder weight and the hydroxy-terminated polysiloxane of powder weight 0.6%, molecular weight are
900~1100,35 points are stirred, then adds in the methyl p-hydroxybenzoate of powder weight 0.4%, is stirred 65 minutes, dry
To modified Nano oyster shell whiting;
(4) adhesive is coated on support fiber surface, 70 DEG C are heated 8 minutes;Then compound with silk fiber, hot pressing obtains
To composite fibre, sterilization treatment obtains medical material;The pressure of the hot pressing is 0.1MPa, and temperature is 85 DEG C, and the time is 18 points
Clock.
Above-mentioned medical material VOC is less than 0.5g/L;Adhesive force is 1 grade;24 hours sterilizing rate (Escherichia coli) for 99% with
On;It is wear-resisting up to 10,000 times or more;Fracture strength is more than 60MPa.