High-strength transparent cocoon composite material and its preparation method and application
A composite material and high-strength technology, applied in chemical instruments and methods, lamination, lamination devices, etc., can solve the problems of poor uniform vitrification effect of silkworm cocoons, poor light transmission of high-density silk, and environmental damage in production and use. , to achieve the effects of green raw materials, simple and easy-to-operate preparation methods, and improved transparency
Active Publication Date: 2022-05-24
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
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Embodiment 1
[0025] Example 1. High-strength transparent silkworm cocoon composite material
[0026] The high-strength transparent silk cocoon composite material includes the following steps:
[0027] 1) the silk fiber is cut into pieces and put into sodium carbonate solution, heated and boiled and degummed for 60 minutes, then rinsed 3 times with hot deionized water, then put into a 45 ° C oven and dried, to obtain the degummed silk fiber, for subsequent use;
[0028] 2) Take the degummed silk fiber for use in step 1), put it into a 9.3 mol / L lithium bromide solution, and heat it to a 50° C. water bath for 5 hours to obtain a mixed solution of silk fibroin and lithium bromide; the mixed solution is loaded into Equl with a molecular weight cutoff of 3000Da Dialysis with deionized water in the dialysis bag; after dialysis, the regenerated silk protein solution is obtained and freeze-dried to obtain the regenerated silk protein for use;
[0029] 3) The silk fiber (preferably choose flat sil...
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Abstract
The invention discloses a high-strength transparent silkworm cocoon composite material and a preparation method thereof, which is a fully degradable high-strength transparent silkworm cocoon composite material. The polymer material is regenerated silk fibroin produced by dissolving silkworm silk. The high-strength transparent silk material is produced by regenerating silk fibroin and hot-pressing cocoon silk, and has high transparency, complete degradability, strong biocompatibility and high strength. After hot-pressing, it has a dense structure, strong light transmission, retains the original natural color of the silkworm cocoon, has high mechanical strength, and can be cut at will, with a simple process.
Description
technical field [0001] The invention relates to the field of material preparation, in particular to a high-strength transparent silkworm cocoon composite material, and also to a preparation method of the material. Background technique [0002] At present, the commonly used parent materials of fluorescent thin film transparent materials are mainly polymethyl methacrylate (PMMA) polydimethylsiloxane (PDMS) polycarbonate (PC) polystyrene (PS) polyethylene terephthalate. However, these polymers are derived from non-renewable petroleum resources, have poor biocompatibility, and are difficult to degrade in the environment. Their production and use have caused great harm to the environment, especially with the development of biological The development of capacitive implantable optoelectronic devices urgently needs a substrate material and bioimplantable material that can meet the characteristics of biocompatible, biodegradable and sustainable development. [0003] As a natural fib...
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