High-strength transparent silkworm cocoon composite material and preparation method and application thereof
A composite material, high-strength technology, applied in chemical instruments and methods, lamination devices, lamination, etc., can solve problems such as poor uniform vitrification effect of cocoons, poor light transmittance of high-density silk, and environmental damage in production and use. , to achieve the effects of green and environmentally friendly raw materials, simple and easy-to-operate preparation methods, and improved transparency.
Active Publication Date: 2021-11-26
SOUTHWEST UNIV
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Problems solved by technology
[0002] At present, the commonly used matrix materials for fluorescent film transparent materials are mainly polymethyl methacrylate (PMMA), polydimethylsiloxane (PDMS), polycarbonate (PC), polystyrene (PS) and polyethylene terephthalate. Synthetic polymers such as esters (PET), however, these polymers are derived from non-renewable petroleum resources, have poor biocompatibility, and are difficult to degrade in the environment, and their production and use have caused great harm to the environment, especially as biophase The development of capacitive implantable optoelectronic devices urgently needs a substrate material and bioimplantation material that can meet the characteristics of biocompatibility, biodegradation and sustainable development.
[0003] As a natural fiber with the strongest strength, silk is widely used in materials science and medicine. However, high-density silk has poor light transmittance. Sericin can be dissolved by high temperature and high pressure, but it is often difficult to achieve uniformity due to high temperature and high pressure of the material, resulting in silkworm cocoons. Poor uniform vitrification
Method used
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Embodiment 1
[0025] Embodiment 1, high-strength transparent cocoon composite material
[0026] The high-strength transparent cocoon composite material comprises the following steps:
[0027] 1) Cut the silk fibers into pieces and put them in a sodium carbonate solution, heat and boil for 60 minutes to degumming, then rinse with hot deionized water for 3 times, and then put them into an oven at 45°C to dry to obtain degummed silk fibers for later use;
[0028] 2) Take the spare degummed silk fiber in step 1), put it into 9.3mol / L lithium bromide solution, heat it to 50° C. in a water bath for 5 hours, and obtain a mixed solution of silk protein and lithium bromide; put the mixed solution into Equl with a molecular weight cutoff of 3000Da The dialysis bag is dialyzed with deionized water; after dialysis, the regenerated silk protein solution is obtained and freeze-dried to obtain the regenerated silk protein for use;
[0029] 3) Spread the silk fiber (it is best to choose flat silk, regular...
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Abstract
The invention discloses a high-strength transparent silkworm cocoon composite material and a preparation method thereof, and particularly relates to a completely-degraded high-strength transparent silkworm cocoon composite material which is synthesized by combining high-molecular biomaterial regenerated silk fibroin with silkworm flat silk through hot pressing. The high-molecular material is regenerated silk fibroin generated by dissolving silk. The high-strength transparent silk material is generated by hot-pressing silkworm cocoon silk through regenerated silk fibroin, and has the properties of high transparency, complete degradability, strong biocompatibility and high strength. After hot pressing, the material is compact in structure, high in light transmission, high in mechanical strength, capable of being cut at will and simple in process, and the original natural color of the silkworm cocoon is reserved.
Description
technical field [0001] The invention relates to the field of material preparation, in particular to a high-strength transparent cocoon composite material, and also relates to a preparation method of the material. Background technique [0002] At present, the commonly used matrix materials for fluorescent film transparent materials are mainly polymethyl methacrylate (PMMA), polydimethylsiloxane (PDMS), polycarbonate (PC), polystyrene (PS) and polyethylene terephthalate. Synthetic polymers such as esters (PET), however, these polymers are derived from non-renewable petroleum resources, have poor biocompatibility, and are difficult to degrade in the environment, and their production and use have caused great harm to the environment, especially as biophase The development of capacitive implantable optoelectronic devices urgently needs a substrate material and bioimplantation material that can meet the characteristics of biocompatibility, biodegradation and sustainable developmen...
Claims
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IPC IPC(8): B32B9/02B32B9/00B32B9/04B32B37/06B32B37/10
CPCB32B5/02B32B5/26B32B37/06B32B37/10B32B2262/08B32B2307/412B32B2307/558B32B2307/54
Inventor 吴柏青代方银程岚李政吴明校
Owner SOUTHWEST UNIV