CN-118461229-B - Nanofiber membrane for conformal packaging and preparation method

Abstract

The invention discloses a nanofiber membrane for conformal packaging and a preparation method thereof, which belong to the field of precise instrument packaging materials, wherein the preparation method of the nanofiber membrane comprises the following steps of adding plants with biomass glue into a first solvent for stirring and ultrasonic treatment, and then centrifuging and freeze-drying to obtain the biomass glue; adding a polymer matrix material into a second solvent for dissolution, adding the biomass glue for mixing to obtain a spinning precursor solution, carrying out electrostatic spinning on the spinning precursor solution to obtain a nanofiber membrane, and exposing the nanofiber membrane to steam volatilized by a crosslinking agent for crosslinking reaction to obtain the crosslinked nanofiber membrane. The crosslinked nanofiber membrane prepared by the invention has the characteristics of ultra-fast shrinkage response to water vapor, high conformality and high adhesiveness, can meet the requirements of the modern packaging industry on high efficiency, environmental protection and intellectualization, and has good application prospect in the field of precise instrument packaging.

Inventors

• GAO MING
• HOU JIAZI

Assignees

• 吉林大学

Dates

Publication Date

20260512

Application Date

20240514

Claims (6)

1. 1. A method of preparing a nanofiber membrane for conformal packaging, comprising the steps of: adding the plants with the biomass glue into a first solvent for stirring and ultrasonic treatment, and then centrifuging and freeze-drying to obtain the biomass glue; adding a high polymer matrix material into a second solvent for dissolution, and then adding the biomass glue for mixing to obtain a spinning precursor solution; carrying out electrostatic spinning on the spinning precursor liquid to obtain a nanofiber membrane; Exposing the nanofiber membrane to steam volatilized by a crosslinking agent for crosslinking reaction to obtain a crosslinked nanofiber membrane; In the spinning precursor solution, the mass concentration of the polymer matrix material is 10% -18%, and the mass concentration of the biomass glue is 1% -5%; the plant with biomass glue is chia seeds; The polymer matrix material is gelatin.
2. 2. The method for preparing a nanofiber membrane for conformal packaging according to claim 1, wherein said first solvent is one or more of dimethylformamide, dimethylacetamide, acetone, distilled water, xylene, and ethanol.
3. 3. The method for preparing a nanofiber membrane for conformal packaging according to claim 1, wherein said second solvent is one or more of dichloromethane, acetic acid, methanol, ethyl acetate, methyl ethyl ketone, dimethyl sulfoxide.
4. 4. The method for preparing a nanofiber membrane for conformal packaging according to claim 1, wherein said cross-linking agent is one or more of formaldehyde, acetaldehyde, glyoxal, succinaldehyde, glutaraldehyde, acetone, polypropylene glycol glycidyl ether.
5. 5. A nanofiber membrane produced by the production method of any one of claims 1 to 4.
6. 6. Use of the nanofiber membrane of claim 5 as a conformable packaging material.

Description

Nanofiber membrane for conformal packaging and preparation method Technical Field The invention relates to the field of packaging materials of precise instruments, in particular to a nanofiber membrane for conformal packaging and a preparation method thereof. Background Packaging materials play an important role in the packaging industry and are key factors in the aspects of promoting the development of packaging technology, improving packaging quality, reducing packaging cost and the like. In the current industrial system, the packaging material plays multiple roles, and not only provides basic protection functions of moisture resistance, shock resistance, mildew resistance and the like, but also gradually integrates diversified characteristics of intelligence, attractive appearance and the like. Plastic materials are used as the main materials of the packaging industry, and as the use amount thereof continues to increase, harmful substances generated in the production, use and disposal processes cause serious damage to soil, water sources and ecological environment. Meanwhile, with rapid development of industrialization and diversification of consumer demands, higher demands are put on packaging materials. Therefore, developing a new, environment-friendly and intelligent packaging material is a problem to be solved in the current packaging industry. The intelligent packaging material is used as a research hot spot in recent years, realizes self-adaptive packaging of objects in different shapes through material selection, and has great application potential. For example, soft elastomers and shape memory materials can closely conform to tissue interfaces, adapt to dynamic environmental changes, and provide seamless packaging for specific target organs. However, these materials often need to be customized in advance and their performance may be affected under certain conditions, such as changes in ambient temperature. On the other hand, shrink-shape adaptive packaging made of rigid, heat-shrinkable polymers can be achieved under thermal stimulation, but such materials have high requirements for ambient temperature and may exhibit slow shrinkage or be unstable at low temperatures. Water is used as a benign stimulus, and some materials in nature, such as spider silks, exhibit a unique hypercomptraction phenomenon through water induction, thus providing a new idea for intelligent design of packaging materials. Disclosure of Invention The invention aims to provide a preparation method of a nanofiber membrane for conformal packaging, which is used for solving the problems in the background art. In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: A method of preparing a nanofiber membrane for conformal packaging, comprising the steps of: adding the plants with the biomass glue into a first solvent for stirring and ultrasonic treatment, and then centrifuging and freeze-drying to obtain the biomass glue; adding a high polymer matrix material into a second solvent for dissolution, and then adding the biomass glue for mixing to obtain a spinning precursor solution; carrying out electrostatic spinning on the spinning precursor liquid to obtain a nanofiber membrane; And exposing the nanofiber membrane to steam volatilized by the crosslinking agent for crosslinking reaction to obtain the crosslinked nanofiber membrane. Preferably, in the spinning precursor solution, the mass concentration of the polymer matrix material is 1% -20%, and the mass concentration of the biomass glue is 1% -5%. Preferably, the plant with biomass glue is one or more of aloe, reed, seaweed, flaxseed, snow oat, peach bark, chia seed and agaric. Preferably, the plant with biomass gum is chia seed. Preferably, the polymer matrix material is one or more of polyvinylidene fluoride, polyvinylidene fluoride-hexafluoropropylene, polyacrylonitrile, polycaprolactone, polystyrene, chitosan, gelatin, chitin, hyaluronic acid, collagen, sodium alginate and polyvinyl alcohol. Preferably, the first solvent is one or more of dimethylformamide, dimethylacetamide, acetone, distilled water, xylene and ethanol. Preferably, the second solvent is one or more of dichloromethane, acetic acid, methanol, ethyl acetate, methyl ethyl ketone and dimethyl sulfoxide. Preferably, the cross-linking agent is one or more of formaldehyde, acetaldehyde, glyoxal, succinaldehyde, glutaraldehyde, acetone and polypropylene glycol glycidyl ether. Another object of an embodiment of the present invention is to provide a nanofiber membrane manufactured by the above manufacturing method. It is another object of an embodiment of the present invention to provide an application of the nanofiber membrane as described above as a conformable packaging material. The nanofiber membrane prepared by the method has the characteristics of high adaptability and high adhesiveness to water vapor, can meet the requirements of the modern pa