CN114737393A - Degradable flexible conductive material and preparation method and application thereof - Google Patents

Degradable flexible conductive material and preparation method and application thereof Download PDF

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Publication number
CN114737393A
CN114737393A CN202210435913.0A CN202210435913A CN114737393A CN 114737393 A CN114737393 A CN 114737393A CN 202210435913 A CN202210435913 A CN 202210435913A CN 114737393 A CN114737393 A CN 114737393A
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pla
conductive
preparation
mixed solution
based mixed
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孙程
王宗乾
王金成
应丽丽
杨海伟
徐欢
王勇
卜凡
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Anhui Fuchun Color Textile Co ltd
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Anhui Fuchun Color Textile Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46—Compounds containing quaternary nitrogen atoms
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
    • D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/192—Polycarboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/15—Proteins or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/50—Modified hand or grip properties; Softening compositions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The invention provides a degradable flexible conductive material and a preparation method and application thereof.A choline eutectic solvent is adopted to carry out surface modification pretreatment on a PLA material, so that the surface roughness is increased, the hydrophilic and hydrophobic properties of the surface are changed, and the content of active groups is increased; then preparing a high-energy-efficiency conductive bio-based mixed solution, specifically dissolving the multi-arm carbon nano tube and MXene in a fibroin solution to form a stable system; and finally, loading the conductive bio-based mixed solution on a PLA fiber material substrate based on a padding process to prepare a conductive PLA material, and processing and forming the intelligent wearable textile. And testing the electric heating performance, the motion and respiration sensing performance and the wearable performance of the system to carry out system detection.

Description

Degradable flexible conductive material and preparation method and application thereof
Technical Field
The invention belongs to the field of textiles, and particularly relates to a degradable flexible conductive material, and a preparation method and application thereof.
Background
Currently, wearable fabrics of intelligence have wide market prospect. At present, aiming at the field of intelligent wearable textiles, a main preparation method is to integrate various conductive materials, such as carbon nano materials (carbon nano tubes, graphene and carbon black) or conductive polymers (PPy, PANI and PEDOT), with textiles in a spraying, dipping, vacuum filtration and screen printing mode or a combination mode of multiple methods, but the problems still exist in the load capacity of functional components, and the problem of poor functional attributes or large energy consumption caused by insufficient load capacity becomes a research hotspot problem.
Polylactic acid (PLA) is prepared by fermenting starch-containing biomass such as corn and the like or straw cellulose to prepare lactic acid and polymerizing the lactic acid, and is an important bio-based material. PLA fiber which is produced by using PLA as a raw material through processing technologies such as melt spinning and the like belongs to natural fiber and has good wearing and biodegradable properties. With the dual carbon goal, PLA fibers have met with the best developmental opportunity to replace traditional petroleum-based chemical fiber materials. However, the prior art does not produce a biodegradable conductive yarn based on a PLA fiber matrix.
Disclosure of Invention
The invention aims to provide a degradable flexible conductive material and a preparation method thereof, wherein a choline eutectic solvent is adopted to carry out surface modification pretreatment on a PLA fiber yarn or a PLA non-woven fabric, and a padding process is adopted to load a conductive bio-based mixed solution on a PLA fiber yarn or PLA non-woven fabric substrate to prepare the conductive PLA yarn or PLA non-woven fabric, which has the characteristics of conductivity and biodegradability.
The invention also aims to provide application of the degradable flexible conductive material in preparation of intelligent wearable textiles. Based on the electrical heating performance, the air permeability and the wearability of the degradable conductive material, the fabric can be used for preparing intelligent wearable textiles.
The specific technical scheme of the invention is as follows:
a preparation method of a degradable flexible conductive material comprises the following steps:
1) pre-treating the PLA material by using a eutectic solvent, and drying;
2) directly soaking the PLA material treated in the step 1) into the conductive bio-based mixed solution, and after soaking, padding to obtain the PLA material.
In the step 1), the PLA material is PLA fiber yarn or PLA non-woven fabric.
In the step 1), the eutectic solvent is obtained by mixing choline chloride and oxalic acid, and the molar ratio of the choline chloride to the oxalic acid is 1: 2;
in the step 1), when the eutectic solvent is used for pretreating the PLA material, the bath ratio is 1:20-30, namely the mass ratio of the PLA material to the eutectic solvent is 1: 20-30; the pretreatment temperature is 40-50 ℃, and the treatment time is 15-30 min.
Further, the PLA fiber yarns pretreated in the step 1) are subjected to hot water washing at 75 ℃ and cold water washing at 25 ℃ for 5-10min respectively, eutectic solvent components are removed, and then the yarns are dried;
the drying in the step 1) specifically comprises the following steps: drying at 100 deg.C to balance weight.
The preparation method of the conductive bio-based mixed solution in the step 2) comprises the following steps: adding multi-wall carbon nano-tube into fibroin solution under the condition of stirring, and then adding Ti3C2TxMXene, ultrasonic dispersion.
The stirring condition in the step 2) refers to stirring at the rotating speed of 600 r/min.
Preparation of the fibroin solutionThe preparation method comprises the following steps: placing silkworm silk in CaCl2/C2H5OH/H2Heating and dissolving in an O ternary solvent to obtain a silk solution, filling the silk solution into a dialysis bag, and continuously dialyzing with deionized water;
in the preparation method of the fibroin solution, CaCl in the ternary solvent2、C2H5OH and H2The molar ratio of O is 1:2: 8; the heating dissolution specifically comprises the following steps: dissolving at 80 deg.C for 2-3 h; the bath ratio of the raw silk of the silkworm to the ternary solvent is 1: 20-30; namely the mass ratio of the raw silk of the silkworm to the ternary solvent is 1: 20-30; the dialysis bag has a retention capacity: 8-14k Da from United states Union carbide; continuously dialyzing with deionized water for 72h or more; the concentration of the obtained dialyzed fibroin solution was diluted to 1.4 wt% and stored at 4 ℃ for further use.
Preferably, in step 2), the preparation method of the conductive bio-based mixed solution comprises: adding deionized water into 1.4 wt% of fibroin solution, adding a multi-carbon-wall carbon nanotube under stirring at a rotating speed of 600r/min, and uniformly stirring and dispersing; adding MXene, and performing ultrasonic dispersion to obtain the product.
In the preparation of the conductive bio-based mixed solution, the mass ratio of the fibroin solution, the deionized water, the multi-carbon-wall carbon nanotube and the MXene is as follows: 5:1:5: 1;
the multi-carbon-wall carbon nanotube is a commercially available product;
the MXene is synthesized into commercially available Ti by adopting a chemical etching method3C2Tx MXene。
In the step 2), the dipping time is 10-15 min;
in the step 2), padding is carried out, and the pressure is controlled to be 0.25 MPa;
and in the step 2), repeating the soaking and padding operation for 6 times, and drying at 100 ℃ to balance weight.
In the step 2), the multi-carbon-wall carbon nano-tube is negatively charged and is attracted with the positive electricity of the silk fibroin liquid, so that a stable system is favorably formed, the system dissolved with the carbon nano-tube is weak in electric property, but MXene is positively charged, and the multi-carbon-wall carbon nano-tube and MXene can be attracted to form a stable uniform system. The order of addition of the two components is therefore sequential, with the aim of preparing a more stable system.
The degradable flexible conductive material provided by the invention is prepared by adopting the method.
The invention provides application of a degradable flexible conductive material to manufacturing of an intelligent wearable textile.
The PLA material is used as a substrate, and the surface modification pretreatment is firstly carried out on the PLA material by using a choline eutectic solvent, so that the surface roughness is increased, the hydrophilic and hydrophobic properties of the surface are changed, and the active group content is increased; then preparing a high-energy-efficiency conductive bio-based mixed solution, specifically dissolving the multi-wall carbon nano tube and MXene in a fibroin solution to form a stable system; the protein component plays a role of a buffering agent and a dissolving carrier, and also can play a role of an adhesive in functional finishing, so that the adhesion fastness of the nanotube and MXene on the PLA surface is improved; and finally, loading the conductive bio-based mixed solution on a PLA fiber yarn substrate based on a padding process, wherein the padding process provides an external acting force to promote the components to permeate into the fibers, so that the conductive PLA yarn is prepared and processed into the intelligent wearable textile. And testing the electric heating performance, the motion and respiration sensing performance and the wearable performance of the system to carry out system detection.
Drawings
FIG. 1 is a schematic view of the preparation process of the present invention, wherein a is a schematic view of the preparation of a conductive mixed solution; b, preparing a schematic diagram of the conductive PLA fiber yarn;
FIG. 2 is a microscopic topography of a conductive PLA fiber yarn made in accordance with the present invention;
FIG. 3 is an element distribution of a conductive PLA fiber yarn made in accordance with the present invention;
FIG. 4 is a U-I curve of a PLA fabric after treatment according to the invention;
FIG. 5 is a graph of temperature versus time for PLA fabrics treated in accordance with the invention at various voltages;
FIG. 6 is a graph of the thermal imaging of PLA fabric at different voltages over time after treatment in accordance with the present invention;
FIG. 7 is a graph showing the flexibility of temperature of PLA fabric with voltage change after the treatment of the present invention;
FIG. 8 is the recyclability of the 5v electrical heating performance of PLA fabrics treated in accordance with the invention;
FIG. 9 is a graph of a cyclic thermal image of a PLA fabric after treatment according to the invention under 5v electrical heating;
FIG. 10 is a bar graph of the air permeability of a PLA fabric after DES treatment and a PLA fabric after treatment according to the invention;
FIG. 11 is a graph comparing air permeability of a PLA fabric after DES treatment with a PLA fabric after treatment according to the invention;
FIG. 12 is a diagram showing moisture permeability of a PLA fabric after DES treatment;
FIG. 13 is a graph showing the moisture permeability of a PLA fabric after treatment according to the invention;
fig. 14 is a moisture permeation profile comparison of DES treated PLA fabrics to PLA fabrics of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The raw silk used by the invention is provided by tripartite silk limited company in Qingyang county of Anhui province; PLA nonwoven fabric with a grammage of 30g/m2Supplied by the Simutant group, Inc.; dialysis bags were purchased from united states carbonization.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
Example 1
A preparation method of a degradable flexible conductive material comprises the following steps:
1) preparation of conductive bio-based mixed solution:
dissolving silkworm raw silk in CaCl directly2/C2H5OH/H2In a ternary solvent of O, wherein, CaCl2、C2H5OH and H2Dissolving at 80 ℃ for 2h with the molar ratio of O of 1:2:8, wherein the bath ratio of the raw silk to the ternary solvent is 20:1, filling the obtained silk solution into a dialysis bag, and retaining the molecular weight: 8-14k Da, and continuously dialyzing with deionized water for 72 h. The concentration of the fibroin solution after dialysis was diluted to 1.4 wt% and stored at 4 ℃ for further use.
Taking 100mg of the prepared fibroin solution with the concentration of 1.4 wt%, adding 20mL of deionized water, placing the mixture on a magnetic stirrer for stirring, adding 100mg of a multi-carbon walled carbon nanotube (SSCNT) (commercially available) under stirring at the rotating speed of 600r/min, stirring and dispersing uniformly, dissolving 20mg of purchased MXene into the fibroin solution, and continuously performing ultrasonic oscillation and dispersion for 40min under the conditions of 30KHz and 300W for later use;
2) pretreatment of PLA fiber-based yarns and padding finishing of a conductive solution:
the method comprises the following steps of pretreating PLA fiber yarns by adopting a choline chloride/oxalic acid eutectic solvent, wherein the molar ratio of choline chloride to oxalic acid in the choline chloride/oxalic acid eutectic solvent is 1:2, the bath ratio in the pretreatment is 30: 1, the pretreatment temperature is 40 ℃, and the treatment time is 30 min. Washing the pretreated PLA fiber yarn with hot water at 75 ℃ and cold water at 25 ℃ for 10min respectively, removing eutectic solvent components, and drying at 100 ℃ to balance weight;
directly soaking the dried PLA fiber yarns into the prepared conductive bio-based mixed solution, soaking for 10min, and then padding by using a padder, wherein the pressure is controlled to be 0.25 MPa; and repeating the dipping and padding operations for 6 times to prepare the conductive PLA fiber-based yarn, and drying the conductive PLA fiber-based yarn at 100 ℃ until the conductive PLA fiber-based yarn is balanced in weight to be tested.
The preparation process is schematically shown in fig. 1, wherein a is a schematic preparation of the conductive mixed solution; b preparation schematic diagram of conductive PLA fiber yarn.
The surface microporous structure of the hydrophilic DES-PLA prepared by pretreating the PLA fiber yarns by the choline chloride/oxalic acid eutectic solvent is favorable for adsorbing a conductive bio-based mixed solution, the conductive layer on the fiber surface is continuous and flaky and forms more grooves and bulges, and the wrinkle form is similar to the surface reticulate form of the Hami melon peel. The micro-morphology is shown in fig. 2, the MXene sheet forms uniform and continuous corrugation imitating the concave-convex fluctuation of cantaloupe along the axial direction of the fiber, the two-dimensional flaky MXene layer and tubular CNT can be clearly observed on the surface of the fiber, in addition, the conductive layer is not only spread on the surface of the fiber, but even is uniformly filled into the gaps between the fibers, and the interconnected network constructed by the conductive liquid constructs a continuous and unobstructed conduction path, as shown in fig. 2. Meanwhile, C, O, F, Ti elements are uniformly distributed on the fiber surface, as shown in fig. 3, wherein F and Ti elements are both from the conductive layer formed on the PLA fiber surface by the prepared conductive bio-based mixed solution, and the percentages of these four elements are 44.16%, 36.13%, 10.65% and 9.06%, respectively, which indicates that the DES-treated PLA fiber yarn can successfully adsorb the conductive solution under the ordinary impregnation method and has high, uniform and continuous loading.
Example 2
A preparation method of a degradable flexible conductive material comprises the following steps:
the difference from example 1 is only that the PLA fiber yarn treated in example 1 is replaced by PLA nonwoven fabric, the other preparation methods are the same as example 1, and the product prepared in example 2 is named as: the treated PLA fabric of the invention.
In addition, a PLA nonwoven fabric (hereinafter referred to as a DES-treated PLA fabric, hereinafter referred to as DES-PLA) which had been pretreated with the choline chloride/oxalic acid eutectic solvent only in accordance with the method of example 1 was used as a comparison,
the electrical heating performance of the degradable conductive material prepared by the invention is analyzed as follows:
the PLA fabric treated by the method is connected with a FLUKE 8808A type desk digital multimeter and a KXN-305D type direct current stabilized power supply in series, the change situation of the output current of the fabric can be read in real time under the application of different voltages, and fig. 4 is a U-I change curve of the PLA fabric treated by the method. When a voltage of 1-5V is applied to it, as shown in fig. 5, the temperature can rapidly reach about 21.5, 24.5, 31.7, 45.6, 68.8 ℃ respectively, the ambient temperature is 19 ℃ and the temperature rise is 2.5 ℃, 5.5 ℃, 12.7 ℃, 26.6 ℃ and 49.8 ℃ respectively, and when the voltage is turned off, the fabric surface temperature drops to the ambient temperature again at a faster rate, fig. 6 shows a photograph of the resistance heating of the fabric with a thermal imaging camera at a voltage of 1-5V, when the fabric color is blue very close to the ambient temperature at 1V, and as the voltage is increased, the color of the PLA yarn fabric gradually changes from dark blue to bright blue, light green, yellow and red due to the gradual heating of the conductive layer of the PLA surface.
In order to verify the sensitivity and the cyclability of the electric heating performance of the fabric under different voltages, the result is shown in fig. 7, the temperature of the fabric surface is changed by adjusting the voltage within a certain time, which shows that the temperature of the PLA fiber yarn fabric prepared by the invention is flexibly changed along with the voltage; after the voltage is turned off after 5 times of repeatedly and circularly applying 5V voltage for a certain time, the temperature change rate and the temperature magnitude of the voltage are not changed greatly, and as shown in FIG. 8, the excellent temperature rise stability can still be maintained. Fig. 9 shows the resistance heating change of the PLA fiber fabric after 1-5 cycles, the surface temperature is uniform and the temperature is not affected by the number of cycles, which indicates that the electrical heating performance of the PLA fiber yarn fabric prepared by the present invention has strong sensitivity and stability, and the electrical heating effect can be repeatedly generated.
The prepared PLA fabric treated by the method has the following moisture-permeable, air-permeable and wearable performances:
FIG. 10 is a graph of permeability test of DES treated PLA fabric and treated PLA fabric of the invention according to GB/T5453. the permeability of DES-PLA without conductive solution loading is about 400mm/s, while the permeability of the treated PLA fabric of the invention is reduced to about 300mm/s, but still maintains a good permeability level, and it can be seen from FIG. 11 that ammonia and hydrochloric acid can react with each other to generate ammonium chloride with white smoke characteristics at a fast speed when the container is in an open state and sealed by DES-PLA and treated PLA fabric of the invention, which all prove that the fabric has good permeability.
As shown in fig. 12 and 13, when the boiling water is in the water vapor permeation state after being sealed and covered with the PLA fabric after DES-PLA and the treatment of the present invention for 10s, it can be seen that there is a significant amount of heat to say that the vapor is permeated. As shown in figure 14, the moisture vapor permeability rates of the DES-PLA and the PLA fabric treated by the invention are in a linear relationship with time and show an increasing trend at a faster rate, and the moisture permeability rates of the PLA fabric treated by the invention and the DES-PLA are not greatly different, so that the conductive fabric has better moisture permeability, the internal moisture can be rapidly discharged by the loaded fiber structure, the bacteria are prevented from breeding in practical use, and the conductive fabric is always kept in a drier state.
The invention prepares biodegradable conductive yarn or plant based on PLA fiber matrix for the first time; in the preparation process, the choline eutectic solvent is used for pretreatment of the PLA fiber material, the loading capacity of the PLA fiber matrix on functional conductive components is increased from multiple dimensions such as appearance characteristics, chemical structures, electric potentials, dyeing bases and the like, and the conductive effect is improved; the prepared conductive multifunctional component is also a bio-based degradable system, the main component of the system is silk protein liquid, and high-value utilization of low-value biological resources is realized.

Claims (10)

1. A preparation method of a degradable flexible conductive material is characterized by comprising the following steps:
1) pretreating the PLA material by using a eutectic solvent, and drying;
2) directly soaking the PLA material treated in the step 1) into the conductive bio-based mixed solution, and after soaking, padding to obtain the PLA material.
2. The preparation method according to claim 1, wherein in the step 1), the eutectic solvent is a mixture of choline chloride and oxalic acid, and the molar ratio of the choline chloride to the oxalic acid is 1: 2.
3. the preparation method according to claim 1 or 2, wherein the bath ratio of the PLA material pretreated by the eutectic solvent in step 1) is 1:20-30 ℃, and the pretreatment temperature is 40-50 ℃, and the treatment time is 15-30 min.
4. The method for preparing the conductive bio-based mixed solution according to claim 1, wherein the conductive bio-based mixed solution in the step 2) is prepared by: adding multi-wall carbon nano-tube into fibroin solution under the condition of stirring, and then adding Ti3C2TxMXene, ultrasonic dispersion.
5. The method according to claim 4, wherein the fibroin solution is prepared by: placing silkworm silk in CaCl2/C2H5OH/H2Heating and dissolving in ternary O solvent, filling the obtained silk solution into a dialysis bag, and continuously dialyzing with deionized water.
6. The method for preparing the conductive bio-based mixed solution according to claim 4 or 5, wherein the conductive bio-based mixed solution is prepared by the following steps of: adding deionized water into 1.4 wt% of fibroin solution, adding a multi-carbon-wall carbon nanotube under stirring, and uniformly stirring and dispersing; adding MXene, and performing ultrasonic dispersion to obtain the product.
7. The preparation method according to claim 6, wherein the mass ratio of the fibroin solution, the deionized water, the multi-carbon-wall carbon nanotube and the MXene is as follows: 5:1:5:1.
8. The method according to claim 1, wherein in the step 2), the padding is performed under a pressure of 0.25 MPa.
9. A degradable flexible conductive material prepared by the preparation method of any one of claims 1 to 8.
10. Use of the degradable flexible conductive material prepared by the preparation method according to any one of claims 1 to 8 for preparing intelligent wearable textiles.
CN202210435913.0A 2022-04-24 2022-04-24 Degradable flexible conductive material and preparation method and application thereof Pending CN114737393A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102131980A (en) * 2008-09-02 2011-07-20 国立大学法人北海道大学 Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same
CN106676679A (en) * 2016-11-08 2017-05-17 江南大学 Preparation method of polylactic acid conductive fibers
CN112962308A (en) * 2021-02-08 2021-06-15 安徽工程大学 Processing technology and application of hydrophilic polylactic acid fiber
CN113981675A (en) * 2021-11-16 2022-01-28 武汉纺织大学 Preparation method of photo-induced heating textile
CN114112084A (en) * 2021-11-11 2022-03-01 东南大学 Preparation method of weakly acidic bacteriostatic flexible epidermal electronic device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102131980A (en) * 2008-09-02 2011-07-20 国立大学法人北海道大学 Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same
CN106676679A (en) * 2016-11-08 2017-05-17 江南大学 Preparation method of polylactic acid conductive fibers
CN112962308A (en) * 2021-02-08 2021-06-15 安徽工程大学 Processing technology and application of hydrophilic polylactic acid fiber
CN114112084A (en) * 2021-11-11 2022-03-01 东南大学 Preparation method of weakly acidic bacteriostatic flexible epidermal electronic device
CN113981675A (en) * 2021-11-16 2022-01-28 武汉纺织大学 Preparation method of photo-induced heating textile

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