CN106833604B - A kind of adjustable off-color material of dynamics and preparation method thereof - Google Patents
A kind of adjustable off-color material of dynamics and preparation method thereof Download PDFInfo
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- CN106833604B CN106833604B CN201710052446.2A CN201710052446A CN106833604B CN 106833604 B CN106833604 B CN 106833604B CN 201710052446 A CN201710052446 A CN 201710052446A CN 106833604 B CN106833604 B CN 106833604B
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Abstract
The present invention relates to off-color material preparation technical fields, more particularly to adjustable off-color material of a kind of dynamics and preparation method thereof, it is adopted the following technical scheme that: step 1: being nano particle and colloid aqueous solution containing colloid stabilizer that surface exposure has elemental silver as initial aqueous solution using dispersate, the aqueous solution maximum delustring within the scope of 380-850nm is not less than 0.1cm‑1, wherein nano particle includes but is not limited to silver nanoparticle ball, nanometer rods, nanometer sheet, and by core, elemental silver of nanostructures such as elemental gold, palladiums is the various nanostructures of shell；Step 2: in the initial aqueous solution of step 1, acidity regulator, antifreezing agent, viscosity-controlling agent, gelatinizing agent is sequentially added regardless of succession, is sufficiently mixed, uniform colloidal solution is formed.It is using from evolution active nano material, and color change is abundant, and small volume；Dynamics adjustable extent is big, can cover the Metamorphic dynamics parameter of most of perishable products, and cost is relatively low.
Description
[technical field]
The present invention relates to off-color material preparation technical fields, and in particular to a kind of adjustable off-color material of dynamics and its
Preparation method.
[background technique]
With social development, the application of off-color material is also more and more extensive.Its property list of off-color material is Discoloration kinetics
It can be adjusted interior on a large scale.Discoloration kinetics, refer mainly to two parameters, i.e., (or Coloring Time, the two is each other for discoloration rate
It is reciprocal) and activation energy, the two can be all adjusted on a large scale.Traditional off-color material exists on using and preparing asks as follows
Topic: first is, the display technology of SensorMark uses dyestuff diffusion process, thus volume is larger.Second is, the display of OnVu
Technology uses dyestuff colour fading process, and color change is more single；The dynamics adjustable extent of above two technologies is relatively
It is small, higher cost.
[summary of the invention]
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of structure is simple, design rationally, make
With convenient a kind of adjustable off-color material of dynamics and preparation method thereof, it is using with from evolution active nano material, face
Color change is abundant, and small volume；It is big with dynamics adjustable extent, the rotten power of most of perishable products can be covered
Parameter is learned, and cost is relatively low；It can be for the Metamorphic dynamics characteristic (when rotten at i.e. multiple temperature of various perishable products
Between), the off-color material to match with its parameter is obtained by adjusting formula, to can be traced, simulate and indicate perishable product
Production transport, storage, is sold, the quality change situation in consumption whole process.
Adjustable off-color material of a kind of dynamics of the present invention and preparation method thereof, it uses following technical side
Case:
Step 1: the nano particle for having elemental silver and the colloid water containing colloid stabilizer are exposed by surface of dispersate
Solution is initial aqueous solution；
Wherein: nano particle includes but is not limited to silver nanoparticle ball, nanometer rods, nanometer sheet, and is received with elemental gold, palladium etc.
Rice structure be core, the various nanostructures that elemental silver is shell；
Wherein: colloid stabilizer is the cationic surfactant containing halogen ion (including chloride ion, bromide ion, iodide ion)
Agent, including but not limited to hexadecyltrimethylammonium chloride (being abbreviated as CTAC), cetyl trimethylammonium bromide, hexadecane
Base trimethyl ammonium iodide；
The aqueous solution maximum delustring within the scope of 380-850nm is not less than 0.1cm-1, the concentration of colloid stabilizer is not less than
0.01mM。
Step 2: in the mixed aqueous solution of step 1, regardless of succession sequentially add acidity regulator, antifreezing agent,
Viscosity-controlling agent, gelatinizing agent, are sufficiently mixed, and uniform colloidal solution is formed；Wherein: acidity regulator concentration is not less than
0.01mM；Reductant concentration minimum 0, not more than the 50% of overall quality；Antifreezing agent, viscosity-controlling agent, gelatinizing agent are dense
Spend minimum 0, not more than the 60% of overall quality.
Further, the acidity regulator in step 2 is various water-soluble (and do not formed and precipitated with monovalence silver ion)
Weak acid, including but not limited to formic acid, acetic acid, oxalic acid, lactic acid, citric acid, gluconic acid.
Further, the reducing agent in step 2 be ascorbic acid, arabo-ascorbic acid and its soluble derivative, including
The sodium salt, sylvite, ammonium salt, halo derivatives of (but being not limited to) (different) ascorbic acid.
Further, the viscosity-controlling agent in step 2 is various water-soluble viscosity-controlling agents, is including but not limited to blocked
Wave nurse, xanthan gum.
Further, the gelatinizing agent in step 2 is various water-soluble gelatinizing agents, including but not limited to agar, gelatin,
Arabic gum.
After adopting the above structure, the invention has the following beneficial effects: a kind of adjustable discoloration material of dynamics of the present invention
Material and preparation method thereof, it is using from evolution active nano material, and color change is abundant, and small volume；Dynamics is adjustable
Range is big, can cover the Metamorphic dynamics parameter of most of perishable products, and cost is relatively low；Various perishable products can be directed to
Metamorphic dynamics characteristic (deteriorating time at i.e. multiple temperature), by adjust formula obtain the discoloration to match with its parameter
Material, thus can be traced, simulate and indicate perishable production, transport, storage, sale, consumption whole process in quality
Situation of change.
[Detailed description of the invention]
Described herein the drawings are intended to provide a further understanding of the invention, constitutes part of this application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings:
Fig. 1 is the schematic diagram of colourshifting process of the invention；
[specific embodiment]
With specific embodiment, the present invention will be described in detail below, and illustrative examples therein and explanation are only used to explain
The present invention, but it is not as a limitation of the invention.
A kind of adjustable off-color material of dynamics described in present embodiment and preparation method thereof, it is using as follows
Technical solution:
Step 1: the nano particle for having elemental silver and the colloid water containing colloid stabilizer are exposed by surface of dispersate
Solution is initial aqueous solution；
Wherein: nano particle includes but is not limited to silver nanoparticle ball, nanometer rods, nanometer sheet, and is received with elemental gold, palladium etc.
Rice structure be core, the various nanostructures that elemental silver is shell；
Wherein: colloid stabilizer is the cationic surfactant containing halogen ion (including chloride ion, bromide ion, iodide ion)
Agent, including but not limited to hexadecyltrimethylammonium chloride (being abbreviated as CTAC), cetyl trimethylammonium bromide, hexadecane
Base trimethyl ammonium iodide；
The aqueous solution maximum delustring within the scope of 380-850nm is not less than 0.1cm-1, the concentration of colloid stabilizer is not less than
0.01mM。
Step 2: in the mixed aqueous solution of step 1, regardless of succession sequentially add acidity regulator, antifreezing agent,
Viscosity-controlling agent, gelatinizing agent, are sufficiently mixed, and uniform colloidal solution is formed；Wherein: acidity regulator concentration is not less than
0.01mM；Reductant concentration minimum 0, not more than the 50% of overall quality；Antifreezing agent, viscosity-controlling agent, gelatinizing agent are dense
Spend minimum 0, not more than the 60% of overall quality.
Further, the acidity regulator in step 2 is various water-soluble (and do not formed and precipitated with monovalence silver ion)
Weak acid, including but not limited to formic acid, acetic acid, oxalic acid, lactic acid, citric acid, gluconic acid.
Further, the reducing agent in step 2 be ascorbic acid, arabo-ascorbic acid and its soluble derivative, including
The sodium salt, sylvite, ammonium salt, halo derivatives of (but being not limited to) (different) ascorbic acid.
Further, the viscosity-controlling agent in step 2 is various water-soluble viscosity-controlling agents, is including but not limited to blocked
Wave nurse, xanthan gum.
Further, the gelatinizing agent in step 2 is various water-soluble gelatinizing agents, including but not limited to agar, gelatin,
Arabic gum.
In the present invention, there is the nano-particle colloid aqueous solution of elemental silver as raw material using surface exposure, including but not limited to
Silver nanoparticle ball, nanometer rods, nanometer sheet, and by core, elemental silver of nanostructures such as elemental gold, palladiums be the various nano junctions of shell
Structure, the solution maximum delustring within the scope of 380-850nm are not less than 0.1cm-1。
Wherein: the colloid stabilizer in system is the cationic containing halogen ion (including chloride ion, bromide ion, iodide ion)
Surfactant, including but not limited to hexadecyltrimethylammonium chloride (being abbreviated as CTAC), cetyl trimethyl bromination
Ammonium (being abbreviated as CTAB), cetyl trimethyl ammonium iodide (being abbreviated as CTAI).
Wherein: cause colourshifting process core reaction be elemental silver oxidation dissolution in acid condition reaction, reaction
Equation is as follows:
Ag+O2+4H++4X-→4AgX+2H2O
(wherein X-For halide anion, such as chloride ion, bromide ion, iodide ion)
Wherein: the acidity regulator in system is the weak acid of various water-soluble (and do not formed and precipitated with monovalence silver ion),
Including but not limited to formic acid, acetic acid, oxalic acid, lactic acid, citric acid, gluconic acid etc..
Wherein: reducing agent in system is ascorbic acid, arabo-ascorbic acid and its soluble derivative, including (but it is unlimited
In) sodium salt, sylvite, ammonium salt, halo derivatives etc. of (different) ascorbic acid.
Wherein: the antifreezing agent in system is various water-soluble antifreezing agents, including but not limited to ethylene glycol, propylene glycol, third
Triol etc..
Wherein: the viscosity-controlling agent in system is various water-soluble viscosity-controlling agents, including but not limited to carbomer, Huang
Virgin rubber etc..
Wherein: the gelatinizing agent in system is various water-soluble gelatinizing agents, including but not limited to agar, gelatin, Arab
Glue etc..
Typical preparation step of the invention is as follows:
Acidity regulator (such as lactic acid), antifreezing agent (such as the third two are added into the aqueous solution containing CTAC and nano particle
Alcohol), viscosity-controlling agent (such as xanthan gum), addition order is unlimited, is sufficiently mixed, forms uniform colloidal solution.This colloidal solution
Spontaneous colourshifting process can occur.It is noted that reducing agent, antifreezing agent, viscosity-controlling agent, the gelatinizing agent in the present invention can not
Add.
Specific embodiments of the present invention are as follows:
Off-color material as shown in Figure 1 is in application particularly: by taking the nanorod structure of " Jin Heyin shell " as an example, working as gold nano
When the size of stick core and silver-colored shell meets certain proportion, nanometer rods solution is in green.Thereto be added lactic acid after, silver-colored shell at any time by
Gradually oxidation dissolution, solution colour fade to light green color, yellow, orange；After silver-colored shell is completely dissolved, remaining gold nanorods structure,
Solution pinkiness at this time.
It is noted that it is green between 1 point to 4 points that minute hand, which is directed toward, in the table of Fig. 1；5 points to 8 points are yellow, nine
O'clock to ten one points to be orange, ten two points are pink.
After off-color material preparation of the invention, color presses preset sequence gradual change at any time.Its discoloration rate can pass through
Formula is adjusted, and at 25 DEG C, Coloring Time can be adjusted within the scope of 6 hours to 2 years.Its activation energy that changes colour can pass through formula
It is adjusted, within the scope of 0 to 40 DEG C, activation energy can be adjusted within the scope of 50 to 250kJ/mol.The material is m- when can be used for
Temperature instruction, is tracked, simulated and is shown to the mass change of perishable product, and operating temperature is -25 to 100 DEG C.
Adjustable off-color material of a kind of dynamics of the present invention and preparation method thereof, it uses and receives from evolution activity
Rice material, color change is abundant, and small volume；Dynamics adjustable extent is big, can cover the change of most of perishable products
Matter kinetic parameter, and cost is relatively low；Metamorphic dynamics characteristic (the change at i.e. multiple temperature of various perishable products can be directed to
The matter time), the off-color material to match with its parameter is obtained by adjusting formula, to can be traced, simulate and indicate perishable
Production, transport, storage, sale, consumption whole process in quality change situation.
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (1)
1. a kind of preparation method of the adjustable off-color material of dynamics, it is characterised in that: it is adopted the following technical scheme that:
Step 1: there is the nano particle of elemental silver and containing the colloid aqueous solution of colloid stabilizer by surface exposure of dispersate
For initial aqueous solution；
Wherein: nano particle includes silver nanoparticle ball, nanometer rods, nanometer sheet, and using elemental gold, palladium nanostructure as core, simple substance
Silver is the various nanostructures of shell；
Wherein: colloid stabilizer is the cationic surface active agent of chloride ion, bromide ion, iodide ion, including cetyl three
Ammonio methacrylate, cetyl trimethylammonium bromide, cetyl trimethyl ammonium iodide；
The aqueous solution maximum delustring within the scope of 380-850nm is not less than 0.1cm-1, the concentration of colloid stabilizer is not less than
0.01mM；
Step 2: in the mixed aqueous solution of step 1, reducing agent, acidity regulator, antifreeze is sequentially added regardless of succession
Agent, viscosity-controlling agent, gelatinizing agent, are sufficiently mixed, and uniform colloidal solution is formed；
Wherein: acidity regulator is weak acid water-soluble and that precipitating is not formed with monovalence silver ion, including formic acid, acetic acid, oxalic acid,
Lactic acid, citric acid, gluconic acid；
Reducing agent is ascorbic acid, arabo-ascorbic acid and its soluble derivative, the sodium including ascorbic acid and arabo-ascorbic acid
Salt, sylvite, ammonium salt, halo derivatives；
Viscosity-controlling agent is various water-soluble viscosity-controlling agents, including carbomer, xanthan gum；
Gelatinizing agent is various water-soluble gelatinizing agents, including agar, gelatin, Arabic gum；
Acidity regulator concentration is not less than 0.01mM；Reductant concentration minimum 0, not more than the 50% of overall quality；It is anti-
Freeze agent, viscosity-controlling agent, gelatinizing agent concentration minimum 0, not more than the 60% of overall quality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710052446.2A CN106833604B (en) | 2017-01-24 | 2017-01-24 | A kind of adjustable off-color material of dynamics and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710052446.2A CN106833604B (en) | 2017-01-24 | 2017-01-24 | A kind of adjustable off-color material of dynamics and preparation method thereof |
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| CN106833604B true CN106833604B (en) | 2019-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987920A (en) * | 2019-12-23 | 2020-04-10 | 江南大学 | Preparation method and application of gold nano-colloid type time temperature indicator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735796A (en) * | 2012-06-07 | 2012-10-17 | 北京大学 | Discoloration indicator for shelf life of perishable product and preparation method thereof |
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2017
- 2017-01-24 CN CN201710052446.2A patent/CN106833604B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735796A (en) * | 2012-06-07 | 2012-10-17 | 北京大学 | Discoloration indicator for shelf life of perishable product and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Noble metal plasmonic nanostructure related chromisms;Chao Zhang, Ling-Dong Sun and Chun-Hua Yan;《Inorg. Chem. Front.》;20151208;203–217 |
| Time–Temperature indicator for perishable products based on kinetically programmable Ag overgrowth on Au nanorods;Chao Zhang;《acsnano》;20130429;4561-4568 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987920A (en) * | 2019-12-23 | 2020-04-10 | 江南大学 | Preparation method and application of gold nano-colloid type time temperature indicator |
| CN110987920B (en) * | 2019-12-23 | 2021-02-09 | 江南大学 | Preparation method and application of gold nano-colloid type time temperature indicator |
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| CN106833604A (en) | 2017-06-13 |
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