CN102924740A - Preparation method of sea squirt cellulose cholesteric liquid crystal film and product thereof - Google Patents
Preparation method of sea squirt cellulose cholesteric liquid crystal film and product thereof Download PDFInfo
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- CN102924740A CN102924740A CN2012104533970A CN201210453397A CN102924740A CN 102924740 A CN102924740 A CN 102924740A CN 2012104533970 A CN2012104533970 A CN 2012104533970A CN 201210453397 A CN201210453397 A CN 201210453397A CN 102924740 A CN102924740 A CN 102924740A
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- 229920002678 cellulose Polymers 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 title abstract description 4
- 241000251555 Tunicata Species 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 12
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- 241000251557 Ascidiacea Species 0.000 claims description 43
- 239000010408 film Substances 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 7
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- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000000502 dialysis Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
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- -1 silicon ester Chemical class 0.000 claims description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
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- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 4
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- 238000004378 air conditioning Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 241000251576 Styela clava Species 0.000 description 2
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- MEIRRNXMZYDVDW-MQQKCMAXSA-N (2E,4E)-2,4-hexadien-1-ol Chemical compound C\C=C\C=C\CO MEIRRNXMZYDVDW-MQQKCMAXSA-N 0.000 description 1
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
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- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 229920002521 macromolecule Polymers 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000001724 microfibril Anatomy 0.000 description 1
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- 239000008104 plant cellulose Substances 0.000 description 1
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- 239000000376 reactant Substances 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a technique for preparing sea squirt cellulose cholesteric liquid crystal (N*-LCs) film which has functions of selectively reflecting infrared light and penetrating visible light and the product of the sea squirt cellulose cholesteric liquid crystal film. The N*-LCs film is prepared lyotropic N*-LCs suspension liquid of sea squirt nanometer cellulose by a drying film-making technique. Through regulating factors such as concentration, solvent, hydrolysis temperature or applied magnetic field, and the like, the N*-LCs films which have different screw pitches and thicknesses and can reflect infrared light with different wave lengths can be obtained. The film selectively reflects the infrared light (thermal energy) under the condition of penetrating the visible light, therefore, the film is expected to be applied to film pasting for buildings and automobile window glass, and can effectively block the 'main factor'- the infrared light for heating the buildings in summer, further, indoor temperature is decreased, and the aims of energy saving and emission reduction are fulfilled; and the film is abundant in materials, low in price, environmental-friendly, simple and controllable in processing method, and can be used for industrial production.
Description
Technical field
The invention belongs to the film material with function field of Ascidian Mierocrystalline cellulose N*-LCs.
Background technology
20 beginnings of the century, people have recognized the day by day exhausted and non-renewable of the resources such as oil, coal, and environment is to the importance of health, so beginning has focused on attention on wide material sources and the eco-friendly cellulose materials.
People are studied in detail structure, chemistry and the physical properties of plant cellulose over more than 100 year.1976, [the Werbowyj R.S. such as D.G.Gary, Gray D.G., Mol.Cryst.Liq.Cryst. (Lett.), 1976,34 (4): 97-103.] first open source literature reported molecular weight be 20%～50% aqueous solution of 100000 hydroxypropylcellulose can form have the rainbow color, the N*-LCs solution of strong double refraction and opticity; 1992, Sugiyama etc. [Sugiyama J, Chanzy H, Maret G, Macromolecules, 1992,25 (16): 4232-4234.] extracted Mierocrystalline cellulose first from true Ascidian; 2005, [the Kimura F such as Kimura, Kimura T, Tamura M, et al, Magnetic alignment of the chiral nematic phase of a cellulose microfibril suspension[J], Langmuir, 2005,21 (5): 2034-2037.] reported that the true Ascidian Mierocrystalline cellulose after the acid hydrolysis can form N*-LCs; 2007, Berg etc. [Berg O.V.D, Capadona R.J, Weder C, Biomacromolecules, 2007,8 (4): 1353-1357]. from Styela clava, extract first Mierocrystalline cellulose, and obtain the Styela clava cellulose whiskers with acid-hydrolyzed method.Utilize Ascidian Mierocrystalline cellulose N*-LCs to prepare film among the present invention, film forming still keeps later on the distinctive spirane structure of N*-LCs, can select reflects infrared light.
N*-LCs has unique selection reflecting properties.In reflected wavelength range, the N*-LCs with left-handed spirane structure allows the right-hand circular polarization light transmission and reflects left circularly polarized light, and vice versa.Outside reflected wavelength range, left-handed and right-circularly polarized light all can see through.The reflection wavelength region can represent with Δ λ=Δ nP formula, wherein: P, Δ n are respectively the pitch of spirane structure, the birefringence index of liquid crystal.Select catoptrical wavelength to change along with the variation at visual angle, so that it has color as the rainbow.The spirane structure of N*-LCs has determined the distinctive optical characteristics of itself, such as opticity, polarisation dichroism, Bragg reflection etc.Therefore, Ascidian Mierocrystalline cellulose N*-LCs not only can be in traditional natural fiber material field, and is with a wide range of applications in anti-fake material, reflection-type color electric paper, the fields such as decoration coating, display material and infrared light shielding energy-saving material.Ascidian Mierocrystalline cellulose N*-LCs film in the visible region (400-700nm) reflection less, and near infrared region (700-2200nm) very strong reflection is arranged.Therefore, Ascidian Mierocrystalline cellulose N*-LCs film can be applicable to the usable reflection infrared light, trap heat is material of construction or the automobile industry of purpose.
According to the literature, in the high-rise building approximately 19% energy come from by window and enter indoor solar radiation energy, this part thermal radiation mainly refers to the energy that infrared light (750-2500nm wave band) zone produces, and this is the overheated major cause of Summer Indoor.The film of reflects infrared light can make the economize on electricity of Summer Indoor air-conditioning more than 5%, calculated in 100 hours by annual the use, a domestic air conditioning 24 kilowatt-hours of can economizing on electricity, there are 1.4 hundred million domestic air conditionings to calculate by the whole nation, every year can brownout 3,300,000,000 kilowatt-hours, be equivalent to build less one 600,000 kilowatts fuel-burning power plant, 3,300,000 tons of GHG (Greenhouse Gases) emissions mitigation.
But there are expensive, the shortcomings such as raw material is non-renewable, non-degradable in such film at present on the market, and adopt the N*-LCs film of Ascidian Mierocrystalline cellulose preparation to have aboundresources among the present invention, renewable, degradable, the simple environmental protection of technique, and can pass through the application techniques film forming, technique is simple, the characteristics such as efficient energy-saving.
Summary of the invention
The present invention is that preparation has technology of selecting reflects infrared light and making the Ascidian Mierocrystalline cellulose N*-LCs film that visible light sees through smoothly and products thereof.Ascidian Mierocrystalline cellulose N*-LCs film can effectively stop infrared light heat energy, so, will be widely used in building anti-infrared light pad pasting, anti-fake material and chiral template field with vehicle glass.It has energy-conserving and environment-protective, and raw material resources are abundant, and are cheap, and reactant and by product is nontoxic, environment is not polluted, and meets environmental protection and blue economic theme, and operating process simple possible, production cost are low, easily realize industrialization.
Ascidian Mierocrystalline cellulose N*-LCs thin film technology method may further comprise the steps:
The Ascidian cellulose powder is mixed according to certain ratio with the vitriol oil, with mixing solutions behind 45 ℃ of lower heated and stirred reaction certain hours, add a large amount of deionized water termination reactions, remove excessive acid in the solution by centrifugal and dialysis again, concentrate also and namely obtain N*-LCs suspension after the supersound process.Then suspension is coated on equably on horizontal glass substrate or other base materials, at room temperature seasoning or vacuum-drying namely obtain Ascidian Mierocrystalline cellulose N*-LCs film, treat can take off film when weight no longer changes.
Control film thickness and the pitch of Ascidian Mierocrystalline cellulose N*-LCs film by regulating Ascidian cellulose suspension concentration and consumption, and then can regulate and control reflected wavelength range.
Description of drawings
Fig. 1 is the energy-conservation schematic diagram of Ascidian Mierocrystalline cellulose N*-LCs film.
Fig. 2 is polarizing microscope (POM) photo of Ascidian Mierocrystalline cellulose N*-LCs suspension.
Fig. 3 is the photo of Ascidian Mierocrystalline cellulose N*-LCs film.
By the fingerprint texture that can be clear that the molten N*-LCs of causing of Ascidian Mierocrystalline cellulose among Fig. 2, from fingerprint texture as can be known, the pitch P of this molten N*-LCs of causing is about 16 μ m.
Fig. 3 a, b are the photos of Ascidian Mierocrystalline cellulose N*-LCs film, and wherein the thickness of Fig. 3 a film is about 112 μ m, so the transparency is relatively poor; The thickness of Fig. 3 b film is about 41 μ m, so the transparency better.Fig. 3 c shows that Ascidian Mierocrystalline cellulose N*-LCs film has good snappiness, can adapt to difform base material.
Embodiment
Embodiment 1
(1) getting 5g Ascidian Mierocrystalline cellulose, is that 64% the vitriol oil mixes with 175ml concentration, with the heat collecting type constant-temperature heating magnetic stirring apparatus at 45 ℃ of lower oil baths heating and stirring reaction 10h.
(2) add 500ml deionized water cooling termination reaction, with the centrifugal removal supernatant liquor of whizzer, rotating speed is 12000rad/min, and with centrifugal again after the washed with de-ionized water, and repeatable operation is till the muddiness of upper strata.
(3) pack in the dialysis tubing be neutrality with deionized water dialysis to extraneous solution till, again dialysis tubing is put into 15% polyoxyethylene glycol (PEG) concentrated.
(4) ultrasonic suspension is uniformly dispersed after, be coated with in PS culture dish horizontal substrate, and drying and forming-film at room temperature, carefully take off and namely obtain Ascidian Mierocrystalline cellulose N*-LCs film.
Embodiment 2
The Ascidian Mierocrystalline cellulose can be used dimethyl sulfoxide (DMSO) (DMSO) pre-treatment in the step (1), adds the DMSO of 40ml at 75 ℃ of lower stirring reaction 4h, and then carries out aftertreatment with 64% the vitriol oil.All the other steps are identical with embodiment 1.
Embodiment 3
The reaction times is 5-20 hour in the step (1), and the molten N*-LCs of the causing pitch that obtains is 10-20nm, and the reaction times, longer pitch was larger.
Embodiment 4
Can remove macrobead with the rotating speed of 2000rad/min first in the step (2), again supernatant liquid be washed centrifugal.All the other steps are identical with embodiment 1.
Embodiment 5
Step (4) drops in uniformly Ascidian Mierocrystalline cellulose N*-LCs suspension on the sheet glass or carries out drying and forming-film in the glass culture dish.All the other steps are identical with embodiment 1.
Embodiment 6
The base material that step (4) will be equipped with Ascidian Mierocrystalline cellulose N*-LCs suspension is placed on 30 ℃ of lower vacuum-dryings, and film was taken off in cooling when weight no longer changed.The thickness of the film of suspension concentration preparations different from consumption is also different, and the thickness of the more films of the larger consumption of concentration is larger, otherwise thickness is less.All the other steps are identical with embodiment 1.
Embodiment 7
With glass stick the nano-cellulose suspension that makes is spread upon uniformly in the step (4) and carry out drying on the glass substrate, can prepare the less film of thickness, obtain N*-LCs glass after the drying.All the other steps are identical with embodiment 1.
Embodiment 8
Step can be added the performance that an amount of additive improves film in (4), improves the toughness of cellulosefilm as adding the toughner such as polyvinyl alcohol; Adding the fluidizers such as glycerol, sorbyl alcohol increases the plasticizing rate of cellulosefilm; With fluorinated modified hydrophobic nature of improving cellulosefilm of aralino xylan etc.
Embodiment 9
Add tetraethoxy in the step (4), methyl silicate, the inorganic reagents such as titanium dioxide utilize the spirane structure of Ascidian Mierocrystalline cellulose N*-LCs suspension to prepare the functional organic/inorganic composite material film with N*-LCs structure for template.
Claims (7)
1. Ascidian Mierocrystalline cellulose N*-LCs thin film technology method and products thereof, its feature may further comprise the steps:
(1) preparation of Ascidian Mierocrystalline cellulose N*-LCs suspension: the Ascidian cellulose powder is mixed according to certain ratio with the vitriol oil, heated and stirred reaction for some time, add a large amount of deionized water termination reactions, remove excessive acid in the solution by centrifugal and dialysis again, concentrate also and namely obtain Ascidian N*-LCs suspension after the supersound process.
(2) Ascidian Mierocrystalline cellulose N*-LCs thin film technology: Ascidian N*-LCs suspension is uniformly coated on the glass substrate (or other any material substrates), and vacuum-drying under room temperature or heating, treat to take off film when weight no longer changes, namely obtained Ascidian Mierocrystalline cellulose N*-LCs film.
2. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, the proportional range that it is characterized in that the Mierocrystalline cellulose described in the step (1) and the vitriol oil is 1g: 1ml-1g: 200ml.
3. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, it is characterized in that the hydrolysis temperature described in the step (1) is 25-80 ℃.
4. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, the consumption that it is characterized in that the deionized water that the termination reaction described in the step (1) is used is 1-100 times of sour consumption.
5. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, it is characterized in that the drying temperature described in the step (2) is-20-95 ℃.
6. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, it is characterized in that N*-LCs suspension and the water-soluble polymer described in the step (2), such as the certain proportion certain proportions such as polyvinyl alcohol (1ml polyvinyl alcohol: the 1-100ml Mierocrystalline cellulose) mix the laminated film for preparing Ascidian Mierocrystalline cellulose N*-LCs.
7. according to the method for Ascidian Mierocrystalline cellulose N*-LCs film claimed in claim 1, it is characterized in that the N*-LCs suspension described in the step (2) with as silicon ester, titanic acid ester etc. according to a certain percentage certain proportion (the 1ml polyvinyl alcohol: the 1-100ml Mierocrystalline cellulose) hybrid reaction prepares the laminated film of Ascidian Mierocrystalline cellulose N*-LCs.
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| CN103467761A (en) * | 2013-09-13 | 2013-12-25 | 青岛科技大学 | Preparation method of cellulose circular polarization thin film and cellulose linear polarization thin film and thin film products thereof |
| CN104134400A (en) * | 2014-07-25 | 2014-11-05 | 张玉平 | Optical anti-counterfeiting device based on nanocrystal cellulose |
| CN105153317A (en) * | 2015-07-24 | 2015-12-16 | 哈尔滨工程大学 | Synthetic method for cellulose derivative with large volume liquid crystal unit side group |
| CN105199150A (en) * | 2015-11-13 | 2015-12-30 | 南京林业大学 | Preparation method of cellulose nanocrystal cholesteric liquid crystal texture anti-counterfeiting mark |
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2012
- 2012-10-31 CN CN201210453397.0A patent/CN102924740B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 李健荣等: "海鞘纤维素纳米晶体手性薄膜的制备", 《两岸三地高分子液晶态与超分子有序结构学术研讨会》 * |
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| CN103467761A (en) * | 2013-09-13 | 2013-12-25 | 青岛科技大学 | Preparation method of cellulose circular polarization thin film and cellulose linear polarization thin film and thin film products thereof |
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| CN105536567B (en) * | 2015-12-25 | 2018-11-13 | 武汉大学 | A kind of ascidian nano-cellulose ultrafiltration membrane and its preparation method and application |
| CN109762187A (en) * | 2018-12-29 | 2019-05-17 | 中南林业科技大学 | The preparation method of chiral nematic Cellulose nanocrystal body thin film, application |
| CN110776656A (en) * | 2019-09-16 | 2020-02-11 | 陕西科技大学 | Flexible cholesteric nano crystal cellulose membrane and preparation method thereof |
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