Polylactic acid fiber reinforced polylactic acid/hydroxyapatite composite material and preparation method thereof
A technology of polylactic acid fiber and hydroxyapatite, which is applied in the direction of fiber chemical characteristics, rayon manufacturing, single-component polyester rayon, etc., can solve the problem of insufficient toughness of polylactic acid materials, and achieve safe impact resistance. Poisonous, strengthening toughness, strengthening the effect of antibacterial performance
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Embodiment 1
[0021] A preparation method of polylactic acid / hydroxyapatite composite material reinforced by polylactic acid fiber, is characterized in that, comprises the following steps:
[0022] (1) Dried Scutellaria baicalensis and honeysuckle were crushed through a 60-mesh sieve, and the two kinds of Chinese medicine powders were mixed according to a mass ratio of 1:1. : After mixing at a mass volume ratio (g / mL) of 15, reflux extraction at 65°C for 3 hours and then filter, pass the filtrate through an ultrafiltration membrane with a molecular weight cut-off of 8000, spin dry, crush and sieve to obtain a natural antibacterial agent;
[0023] (2) Mix 12 parts of polylactic acid, 0.15 parts of natural antibacterial agent, 0.05 parts of gallic acid, 40 parts of N,N-dimethylformamide, and 47.8 parts of ethyl acetate to prepare a fiber spinning solution, which is electrospun After silk treatment, vacuum-dry at 45°C for 8 hours to obtain traditional Chinese medicine antibacterial polylactic ...
Embodiment 2
[0028] A preparation method of polylactic acid / hydroxyapatite composite material reinforced by polylactic acid fiber, is characterized in that, comprises the following steps:
[0029] (1) Dried Scutellaria baicalensis and honeysuckle were crushed through a 60-mesh sieve, and the two kinds of traditional Chinese medicine powders were mixed according to the mass ratio of 1:1.2. After microwave treatment for 12 minutes, the traditional Chinese medicine powder was mixed with 45% ethanol-water mixture by 1 : After mixing with a mass volume ratio (g / mL) of 17, reflux extraction at 65°C for 3 hours and then filter, pass the filtrate through an ultrafiltration membrane with a molecular weight cut-off of 8000, spin dry, crush and sieve to obtain a natural antibacterial agent;
[0030] (2) Mix 15 parts of polylactic acid, 0.15 parts of natural antibacterial agent, 0.1 part of gallic acid, 44 parts of N,N-dimethylformamide, and 40.75 parts of ethyl acetate to prepare a fiber spinning solu...
Embodiment 3
[0035] A preparation method of polylactic acid / hydroxyapatite composite material reinforced by polylactic acid fiber, is characterized in that, comprises the following steps:
[0036] (1) Dried Scutellaria baicalensis and honeysuckle were crushed through a 60-mesh sieve, and the two kinds of traditional Chinese medicine powders were mixed according to the mass ratio of 1:0.8. After microwave treatment for 12 minutes, the traditional Chinese medicine powder was mixed with 55% ethanol-water mixture by 1 : After mixing with a mass volume ratio (g / mL) of 17, reflux extraction at 65°C for 3 hours and then filter, pass the filtrate through an ultrafiltration membrane with a molecular weight cut-off of 8000, spin dry, crush and sieve to obtain a natural antibacterial agent;
[0037] (2) Mix 15 parts of polylactic acid, 0.15 parts of natural antibacterial agent, 0.1 part of gallic acid, 35 parts of N,N-dimethylformamide, and 49.75 parts of ethyl acetate to prepare a fiber spinning solu...
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