CN111471198A - 液晶弹性体薄膜及其制备方法、驱动方法和应用 - Google Patents
液晶弹性体薄膜及其制备方法、驱动方法和应用 Download PDFInfo
- Publication number
- CN111471198A CN111471198A CN202010298287.6A CN202010298287A CN111471198A CN 111471198 A CN111471198 A CN 111471198A CN 202010298287 A CN202010298287 A CN 202010298287A CN 111471198 A CN111471198 A CN 111471198A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- elastomer film
- crystal elastomer
- photo
- orientation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004997 Liquid crystal elastomers (LCEs) Substances 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 85
- 230000000638 stimulation Effects 0.000 claims abstract description 35
- 239000000178 monomer Substances 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 19
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 230000004044 response Effects 0.000 claims abstract description 9
- 238000001459 lithography Methods 0.000 claims abstract description 6
- 238000001259 photo etching Methods 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 239000007788 liquid Substances 0.000 claims 1
- 210000002858 crystal cell Anatomy 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 10
- FQCKIWWAEIOPSD-UHFFFAOYSA-N [3-methyl-4-[4-(6-prop-2-enoyloxyhexoxy)benzoyl]oxyphenyl] 4-(6-prop-2-enoyloxyhexoxy)benzoate Chemical compound C=1C=C(OC(=O)C=2C=CC(OCCCCCCOC(=O)C=C)=CC=2)C(C)=CC=1OC(=O)C1=CC=C(OCCCCCCOC(=O)C=C)C=C1 FQCKIWWAEIOPSD-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- XBPWJDSOUOAUQN-UHFFFAOYSA-N 1-phenoxypropane-1,3-diol Chemical compound OCCC(O)OC1=CC=CC=C1 XBPWJDSOUOAUQN-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- DYLIWHYUXAJDOJ-OWOJBTEDSA-N (e)-4-(6-aminopurin-9-yl)but-2-en-1-ol Chemical compound NC1=NC=NC2=C1N=CN2C\C=C\CO DYLIWHYUXAJDOJ-OWOJBTEDSA-N 0.000 description 2
- 125000004801 4-cyanophenyl group Chemical group [H]C1=C([H])C(C#N)=C([H])C([H])=C1* 0.000 description 2
- 239000004970 Chain extender Substances 0.000 description 2
- 238000006845 Michael addition reaction Methods 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- JWXYMBDCGNXXRO-UHFFFAOYSA-N (4-methoxyphenyl) 4-(6-prop-2-enoyloxyhexoxy)benzoate Chemical compound C1=CC(OC)=CC=C1OC(=O)C1=CC=C(OCCCCCCOC(=O)C=C)C=C1 JWXYMBDCGNXXRO-UHFFFAOYSA-N 0.000 description 1
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F220/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3833—Polymers with mesogenic groups in the side chain
- C09K19/3842—Polyvinyl derivatives
- C09K19/3852—Poly(meth)acrylate derivatives
- C09K19/3857—Poly(meth)acrylate derivatives containing at least one asymmetric carbon atom
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/56—Aligning agents
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133719—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films with coupling agent molecules, e.g. silane
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Nonlinear Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Materials Engineering (AREA)
- Mathematical Physics (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Liquid Crystal (AREA)
Abstract
本发明公开了一种液晶弹性体薄膜及其制备方法、驱动方式和应用,该制备方法包括:1)将光取向层的材料溶解于溶剂中,而后覆设于基板上形成取向涂层;2)使用DMD数字掩模光刻系统通过数字掩模板对取向涂层进行取向,得到光取向层,再采用带有光取向层的基板制备液晶盒子;或者,采用带有取向涂层的基板制备液晶盒子,并使用DMD数字掩模光刻系统通过数字掩模板对取向涂层进行取向;3)将包括液晶单体、偶氮苯和光引发剂的液晶混合物填充于液晶盒子中;4)将液晶盒子置于热台上,并在蓝光区进行聚合。本发明液晶弹性体薄膜的制备方法操作简单,灵活性强,精确度高,所制得产品薄膜在光和/或温度刺激下可实现微观表面形貌的动态响应。
Description
技术领域
本发明涉及智能表面材料技术领域,尤其是涉及一种液晶弹性体薄膜及其制备方法、驱动方法和应用。
背景技术
自然界中的生物具有与环境直接接触的表面,表面上各种各样的微观形貌具有特殊的功能,生物利用其功能作用于环境。受到大自然的启发,人类大量研究了具有这类功能的表面智能材料,并在调控亲疏水性、自清洁、攀附机器人等领域得到应用,但以上现有表面智能材料的微观表面多数是形貌不可控且静态不可逆的。
液晶弹性体材料近年来作为刺激影响材料受到了广大研究学者的关注。液晶弹性体材料是液晶聚合物网络的一种类型,液晶弹性体的聚合程度较低,玻璃化转变温度较低,结合了液晶的取向各向异性以及聚合物的弹性,其物理化学性质得到了优化,进而使其得到了广泛应用,尤其液晶弹性体薄膜的宏观薄膜变形已得到了学者的广泛研究和应用,而液晶弹性体薄膜表面的微观形貌可实现驱动、监测、传输和传感等功能,在机器人、光子学和生物医学设备等领域存在着潜在的应用。
近年来,图案化液晶弹性体薄膜一般通过掩模板对液晶进行特定取向,但目前所采用掩模板一般存在价格昂贵、有图案的限制、有最小的像素限制以及操作麻烦等问题,这限制了液晶弹性体薄膜的图案化的设计及应用。另外,液晶弹性体薄膜表面的响应三维结构的形貌大小对于其表面的性质以及应用起着决定性作用,而现有掩模板的使用对图案化的限制导致薄膜表面的三维形貌受限,不利于液晶弹性体薄膜表面的应用。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此,本发明提出一种液晶弹性体薄膜及其制备方法、驱动方法和应用。
本发明所采取的技术方案是:
本发明的第一方面,提供一种液晶弹性体薄膜的制备方法,包括以下步骤:
S1、将光取向层的材料溶解于溶剂中,而后覆设于基板上形成取向涂层;
S2、使用DMD数字掩模光刻系统通过数字掩模板对所述取向涂层进行取向,得到光取向层,再采用带有所述光取向层的基板制备液晶盒子;或者,采用带有所述取向涂层的基板制备液晶盒子,并使用DMD数字掩模光刻系统通过数字掩模板对所述取向涂层进行取向;
S3、将液晶混合物填充于所述液晶盒子中;所述液晶混合物包括液晶单体、液晶低聚物、偶氮苯和光引发剂;
S4、将步骤S3处理后的液晶盒子置于热台上,并在蓝光区进行聚合,形成交联网络,制得液晶弹性体薄膜。
根据本发明的一些实施例,步骤S3中,所述液晶混合物包括以下质量份数的成分:0~60份液晶单体A、0~80份液晶单体B、0~80份液晶低聚物、1~15份偶氮苯、0.2~2份光引发剂;所述液晶单体A选自双端丙烯酸酯类液晶单体;所述液晶单体B选自单端丙烯酸酯类液晶单体,所述液晶低聚物选自聚合度为2~5的自主链型液晶低聚物。
根据本发明的一些实施例,所述光引发剂选自光引发剂819、光引发剂784中的至少一种。
根据本发明的一些实施例,步骤S1中,所述光取向层的材料为偶氮类光取向材料SD1。
根据本发明的一些实施例,步骤S1中,所述溶剂选自N,N-二甲基甲酰胺、N-甲基吡咯烷酮中的至少一种。
根据本发明的一些实施例,步骤S2中,所述光取向层为环形取向、径向取向、弯曲取向、展曲取向中的至少一种。
本发明的第二方面,提供一种液晶弹性体薄膜,由本发明第一方面所提供的任一种液晶弹性体薄膜的制备方法制得,且所述液晶弹性体薄膜可在光刺激和/或温度刺激下发生可逆形变。
根据本发明的一些实施例,所述液晶弹性体薄膜可在光刺激和/或温度刺激下发生可逆形变,包括:在紫外光的刺激下,所述液晶弹性体薄膜中偶氮苯分子的形态发生改变,产生自由体积并结合所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;或者,在50~125℃热刺激下,所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;
由于所述光取向层的取向作用,局域液晶弹性体薄膜的交联网络具有特定的排布,在变形时产生朝向特定方向的驱动力,进而推动局域液晶弹性体薄膜朝特定方向发生三维形变,且三维形变大小及形貌与光取向层的取向图案有关;而在45℃以下低温刺激和/或可见光刺激下,所述三维形变可回复变形。
具体地,液晶弹性体薄膜由于紫外光刺激而产生的形变,可通过在45℃以下低温刺激和/或可见光刺激而回复形变;由于50~125℃热刺激而产生的形变,可通过降温至45℃以下而回复形变。若采用低温刺激回复变形,优选采用40~45℃低温刺激回复变形。
本发明的第三方面,提供一种本发明第二方面所提供的任一种液晶弹性体薄膜的驱动方法,所述驱动方法包括将所述液晶弹性体薄膜置于紫外光照射区域,通过控制紫外光照射区域的紫外光源开关,以控制所述液晶弹性体薄膜的形变;
或者,所述驱动方法包括将所述液晶弹性体薄膜置于温控区域,通过调节所述温控区域的温度,以控制所述液晶弹性体薄膜的形变。
本发明的第四方面,提供一种本发明第二方面所提供的任一种液晶弹性体薄膜在制备盲人显示器、感应器、光动马达、微流体系统阀门或智能响应界面中的应用。
本发明实施例的有益效果是:
本发明实施例提供了一种液晶弹性体薄膜的制备方法,该通过采用DMD数字掩模光刻系统通过数字掩模板对取向涂层进行取向,以形成光取向层,操作简单,可根据需求设计掩模板结构,灵活性强,且精确度高,进而在光取向层上制备液晶弹性体薄膜,可实现开发制备微观三维表面形貌可预先设计的动态响应型液晶弹性体薄膜。所制得的液晶弹性体薄膜在光刺激和/或温度刺激下发生可逆形变;具体地,在紫外光的刺激下,所述液晶弹性体薄膜中偶氮苯分子的形态发生改变,产生自由体积并结合所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;或者,在50~125℃热刺激下,所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;由于所述光取向层的取向作用,局域液晶弹性体薄膜的交联网络具有特定的排布,在变形时产生朝向特定方向的驱动力,进而推动局域液晶弹性体薄膜朝特定方向发生三维形变,且三维形变大小及形貌与光取向层的取向图案有关;而在45℃以下低温刺激和/或可见光刺激下,所述三维形变可回复变形,从而实现液晶弹性体薄膜的微观表面形貌的动态响应。
附图说明
图1是实施例1中采用的数字掩模板所得的液晶指向结构示意图;
图2是实施例2中采用的数字掩模板所得的液晶指向结构示意图;
图3是实施例3中采用的数字掩模板所得的液晶指向结构示意图;
图4和图5是液晶弹性体薄膜微观表面形貌三维形变的示意图。
具体实施方式
以下将结合实施例对本发明的构思及产生的技术效果进行清楚、完整地描述,以充分地理解本发明的目的、特征和效果。显然,所描述的实施例只是本发明的一部分实施例,而不是全部实施例,基于本发明的实施例,本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例,均属于本发明保护的范围。
实施例1
一种液晶弹性体薄膜,其制备方法包括以下步骤:
S1、以N,N-二甲基甲酰胺溶解偶氮类光取向材料SD1,而后旋涂于玻璃基板上形成取向涂层;
S2、采用带有取向涂层的玻璃基板制备成液晶盒子;而后设计数字掩模板,具体结构如图1所示,呈环形的液晶指向矢排布,并使用数字掩模光刻系统对液晶盒子内部的取向涂层进行取向;
S3、取24份液晶单体A、72份液晶单体B、3份偶氮苯、1份光引发剂,混合配制液晶混合物,而后将液晶混合物填入液晶盒子中;其中,液晶单体A具体采用1,4-双-[4-(6-丙烯酰氧基己氧基)-苯甲酰氧基]-2-甲基苯,液晶单体B具体采用24份4-氰基苯基4’-(6-丙烯酰氧基己氧基)苯甲酸酯,以及48份4-[[6-[(1-氧代-2-丙烯基)氧基]己基]氧基]苯甲酸4-甲氧基苯基酯,偶氮苯采用2-甲基丙烯酸偶氮双(4,1-苯氧基-3,1-丙二醇)酯,光引发剂采用引发剂819;
S4、将液晶盒子放置在蓝光区和热台上进行聚合形成交联网络,打开盒子得到附着在其中一玻璃基板上的液晶弹性体薄膜。
实施例2
一种液晶弹性体薄膜,其制备方法包括以下步骤:
S1、以N,N-二甲基甲酰胺溶解偶氮类光取向材料PAAD-22,而后旋涂于玻璃基板上形成取向涂层;
S2、设计数字掩模板,具体结构如图2所示,呈径向的液晶指向矢排布,并使用数字掩模光刻系统对玻璃基板上的取向涂层进行取向,得到光取向层;再采用带有光取向层的玻璃基板制备成液晶盒子;
S3、取15份液晶单体A、80份液晶低聚物、3份偶氮苯、2份光引发剂,混合配制液晶混合物,而后将液晶混合物填入液晶盒子中;其中,液晶单体A具体采用1,4-双-[4-(6-丙烯酰氧基己氧基)-苯甲酰氧基]-2-甲基苯,液晶低聚物具体采用以1,4-双-[4-(6-丙烯酰氧基己氧基)-苯甲酰氧基]-2-甲基苯为主链液晶单体,正丁胺为链增长剂,通过迈克尔加成反应制得的液晶低聚物;偶氮苯采用2-甲基丙烯酸偶氮双(4,1-苯氧基-3,1-丙二醇)酯,光引发剂采用引发剂819;
S4、将液晶盒子放置在蓝光区和热台上进行聚合形成交联网络,打开盒子得到附着在其中一玻璃基板上的液晶弹性体薄膜。
实施例3
一种液晶弹性体薄膜,其制备方法包括以下步骤:
S1、以N-甲基吡咯烷酮溶解偶氮类光取向材料SD1,而后旋涂于玻璃基板上形成取向涂层;
S2、采用带有取向涂层的玻璃基板制备成液晶盒子;而后设计数字掩模板,具体结构如图3所示,呈弯曲和展区的液晶指向矢排布,并使用数字掩模光刻系统对液晶盒子内部的取向涂层进行取向;
S3、取21份向液晶单体A、63份液晶单体B、11份液晶低聚物、3份偶氮苯、2份光引发剂,混合配制液晶混合物,而后将液晶混合物填入液晶盒子中;其中,液晶单体A具体采用1,4-双-[4-(6-丙烯酰氧基己氧基)-苯甲酰氧基]-2-甲基苯,,液晶单体B具体采用21份4-氰基苯基4’-(6-丙烯酰氧基己氧基)苯甲酸酯,以及42份4-[[6-[(1-氧代-2-丙烯基)氧基]己基]氧基]苯甲酸4-甲氧基苯基酯,液晶低聚物具体采用以1,4-双-[4-(6-丙烯酰氧基己氧基)-苯甲酰氧基]-2-甲基苯为主链液晶单体,正丁胺为链增长剂,通过迈克尔加成反应制得的液晶低聚物;偶氮苯采用2-甲基丙烯酸偶氮双(4,1-苯氧基-3,1-丙二醇)酯,光引发剂采用引发剂819;
S4、将液晶盒子放置在蓝光区和热台上进行聚合形成交联网络,打开盒子得到附着在其中一玻璃基板上的液晶弹性体薄膜。
以上各实施例所制得的液晶弹性体薄膜在光刺激和/或温度刺激下发生可逆形变。如图4和图5所示,具体地,具体地,在紫外光刺激的刺激下,液晶弹性体薄膜中偶氮苯分子由反式异构体转变为顺式异构体的形态,顺反异构体转变的过程产生自由体积并结合液晶弹性体薄膜的交联网络的序参数改变,从而带动液晶弹性体薄膜发生形变;或者,在50~125℃热刺激下,液晶弹性体薄膜的交联网络的序参数改变,从而带动液晶弹性体薄膜发生形变;由于光取向层的取向作用,局域液晶弹性体薄膜的交联网络具有特定的排布,在变形时产生朝向特定方向的驱动力,进而推动局域液晶弹性体薄膜朝特定方向发生三维形变,且三维形变大小及形貌与光取向层的取向图案有关;而在45℃以下低温刺激和/或可见光刺激下,该液晶弹性体薄膜会发生回复变形,并回复至原貌,从而可实现液晶弹性体薄膜的微观表面形貌的动态响应。另外,以上液晶弹性体薄膜的制备过程采用DMD数字掩模光刻系统通过数字掩模板对光取向层进行取向,以形成图案化光取向层,操作简单,可根据需求设计掩模板图案结构,灵活性强,且精确度高,进而在光取向层上制备液晶弹性体薄膜,通过在光和/或温度的刺激响应得到对应的三维形貌,可实现开发制备微观三维表面形貌可预先设计的动态响应型液晶弹性体薄。
Claims (10)
1.一种液晶弹性体薄膜的制备方法,其特征在于,包括以下步骤:
S1、将光取向层的材料溶解于溶剂中,而后覆设于基板上形成取向涂层;
S2、使用DMD数字掩模光刻系统通过数字掩模板对所述取向涂层进行取向,得到光取向层,再采用带有所述光取向层的基板制备液晶盒子;或者,采用带有所述取向涂层的基板制备液晶盒子,并使用DMD数字掩模光刻系统通过数字掩模板对所述取向涂层进行取向;
S3、将液晶混合物填充于所述液晶盒子中;所述液晶混合物包括液晶单体、液晶低聚物、偶氮苯和光引发剂;
S4、将步骤S3处理后的液晶盒子置于热台上,并在蓝光区进行聚合,形成交联网络,制得液晶弹性体薄膜。
2.根据权利要求1所述的液晶弹性体薄膜的制备方法,其特征在于,步骤S3中,所述液晶混合物包括以下质量份数的成分:0~60份液晶单体A、0~80份液晶单体B、0~80份液晶低聚物、1~15份偶氮苯、0.2~2份光引发剂;所述液晶单体A选自双端丙烯酸酯类液晶单体;所述液晶单体B选自单端丙烯酸酯类液晶单体,所述液晶低聚物选自聚合度为2~5的自主链型液晶低聚物。
3.根据权利要求1所述的液晶弹性体薄膜的制备方法,其特征在于,所述光引发剂选自光引发剂819、光引发剂784中的至少一种。
4.根据权利要求1所述的液晶弹性体薄膜的制备方法,其特征在于,步骤S1中,所述光取向层的材料为偶氮类光取向材料。
5.根据权利要求1所述的液晶弹性体薄膜的制备方法,其特征在于,步骤S1中,所述溶剂选自N,N-二甲基甲酰胺、N-甲基吡咯烷酮中的至少一种。
6.根据权利要求1至5中任一项所述的液晶弹性体薄膜的制备方法,其特征在于,步骤S2中,所述光取向层为环形取向、径向取向、弯曲取向、展曲取向中的至少一种。
7.一种液晶弹性体薄膜,其特征在于,由权利要求1至6中任一项所述液晶弹性体薄膜的制备方法制得,且所述液晶弹性体薄膜可在光刺激和/或温度刺激下发生可逆形变。
8.根据权利要求7所述的液晶弹性体薄膜,其特征在于,所述液晶弹性体薄膜可在光刺激和/或温度刺激下发生可逆形变,包括:在紫外光的刺激下,所述液晶弹性体薄膜中偶氮苯分子的形态发生改变,产生自由体积并结合所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;或在50~125℃热刺激下,所述液晶弹性体薄膜的交联网络的序参数改变,从而带动所述液晶弹性体薄膜发生形变;
由于所述光取向层的取向作用,局域液晶弹性体薄膜的交联网络具有特定的排布,在变形时产生朝向特定方向的驱动力,进而推动局域液晶弹性体薄膜朝特定方向发生三维形变,且三维形变大小及形貌与光取向层的取向图案有关;而在45℃以下低温刺激和/或可见光刺激下,所述三维形变可回复变形。
9.权利要求7或8所述的液晶弹性体薄膜的驱动方法,其特征在于,所述驱动方法包括将所述液晶弹性体薄膜置于紫外光照射区域,通过控制紫外光照射区域的紫外光源开关,以控制所述液晶弹性体薄膜的形变;
或者,所述驱动方法包括将所述液晶弹性体薄膜置于温控区域,通过调节所述温控区域的温度,以控制所述液晶弹性体薄膜的形变。
10.权利要求7或8所述的液晶弹性体薄膜在制备盲人显示器、感应器、光动马达、微流体系统阀门或智能响应界面中的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010298287.6A CN111471198B (zh) | 2020-04-16 | 2020-04-16 | 液晶弹性体薄膜及其制备方法、驱动方法和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010298287.6A CN111471198B (zh) | 2020-04-16 | 2020-04-16 | 液晶弹性体薄膜及其制备方法、驱动方法和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111471198A true CN111471198A (zh) | 2020-07-31 |
CN111471198B CN111471198B (zh) | 2023-03-28 |
Family
ID=71753597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010298287.6A Active CN111471198B (zh) | 2020-04-16 | 2020-04-16 | 液晶弹性体薄膜及其制备方法、驱动方法和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111471198B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111952460A (zh) * | 2020-08-28 | 2020-11-17 | 电子科技大学 | 一种基于光学微腔效应的有机光电探测器及其制备方法 |
CN112189485A (zh) * | 2020-10-13 | 2021-01-08 | 刘佳 | 一种农业种植大棚的农作物降温保湿装置 |
CN112808549A (zh) * | 2021-02-02 | 2021-05-18 | 北京梦之墨科技有限公司 | 一种光处理设备 |
CN114967241A (zh) * | 2022-04-11 | 2022-08-30 | 汕头大学 | 一种多组分复合体系的光驱液晶光调控器的制备方法 |
CN112808549B (zh) * | 2021-02-02 | 2024-05-31 | 北京梦之墨科技有限公司 | 一种光处理设备 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015145450A (ja) * | 2014-01-31 | 2015-08-13 | 日東電工株式会社 | 光応答性架橋型液晶高分子フィルムの製造方法および該製造方法により得られる光応答性架橋型液晶高分子フィルム |
-
2020
- 2020-04-16 CN CN202010298287.6A patent/CN111471198B/zh active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015145450A (ja) * | 2014-01-31 | 2015-08-13 | 日東電工株式会社 | 光応答性架橋型液晶高分子フィルムの製造方法および該製造方法により得られる光応答性架橋型液晶高分子フィルム |
Non-Patent Citations (1)
Title |
---|
胡华超等: ""动态掩膜光刻在液晶取向中的应用"", 《液晶与显示》, no. 02, 15 April 2013 (2013-04-15), pages 199 - 203 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111952460A (zh) * | 2020-08-28 | 2020-11-17 | 电子科技大学 | 一种基于光学微腔效应的有机光电探测器及其制备方法 |
CN112189485A (zh) * | 2020-10-13 | 2021-01-08 | 刘佳 | 一种农业种植大棚的农作物降温保湿装置 |
CN112189485B (zh) * | 2020-10-13 | 2022-05-27 | 北京麦麦趣耕科技有限公司 | 一种农业种植大棚的农作物降温保湿装置 |
CN112808549A (zh) * | 2021-02-02 | 2021-05-18 | 北京梦之墨科技有限公司 | 一种光处理设备 |
CN112808549B (zh) * | 2021-02-02 | 2024-05-31 | 北京梦之墨科技有限公司 | 一种光处理设备 |
CN114967241A (zh) * | 2022-04-11 | 2022-08-30 | 汕头大学 | 一种多组分复合体系的光驱液晶光调控器的制备方法 |
CN114967241B (zh) * | 2022-04-11 | 2023-06-09 | 汕头大学 | 一种多组分复合体系的光驱液晶光调控器的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN111471198B (zh) | 2023-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111471198B (zh) | 液晶弹性体薄膜及其制备方法、驱动方法和应用 | |
Jiang et al. | Actuators based on liquid crystalline elastomer materials | |
JP6150731B2 (ja) | 液晶配向膜の製造方法 | |
CN113248751B (zh) | 一种液晶弹性体薄膜及其制备方法和应用 | |
JP6137764B2 (ja) | 液晶素子(Liquid Crystal Element)およびこれを含む光変調装置 | |
EP1945737B1 (en) | Copolymer for liquid crystal alignment, liquid crystal aligning layer including copolymer for liquid crystal alignment, and liquid crystal display including liquid crystal aligning layer | |
CN106987255B (zh) | 液晶组合物、包括其的液晶显示装置及其制造方法 | |
TWI642766B (zh) | Liquid crystal display device | |
Ahn et al. | Inhomogeneous stretch induced patterning of molecular orientation in liquid crystal elastomers | |
KR101415127B1 (ko) | 액정셀 | |
Visschers et al. | Liquid crystal polymers with motile surfaces | |
JPWO2011007784A1 (ja) | 積層体の製造方法及び積層体 | |
WO2017177506A1 (zh) | 快速响应液晶显示装置及其制作方法 | |
TW201502145A (zh) | 橫電場驅動型液晶顯示元件之製造方法 | |
KR20130062258A (ko) | 액정 소자를 제조하는 방법 및 액정 소자 | |
Martella et al. | Photonic artificial muscles: from micro robots to tissue engineering | |
JP6519893B2 (ja) | 液晶素子 | |
Deng et al. | Azobenzene-containing liquid crystal triblock copolymers: synthesis, characterization, and self-assembly behavior | |
Astam et al. | Active surfaces formed in liquid crystal polymer networks | |
JP3508918B2 (ja) | 液晶配向膜の製造方法及び液晶表示装置 | |
US20160116781A1 (en) | Liquid crystal display (lcd) panel, manufacturing method thereof and lcd device | |
KR100508053B1 (ko) | 액정 겔, 겔화제, 액정 디바이스 및 액정 디바이스의 제조 방법 | |
CN103995396B (zh) | 一种具有多畴显示的液晶面板及其制备方法 | |
CN106200097A (zh) | 一种电控调光器件 | |
Kong et al. | Recent Developments of Photodeformable Polymers: From Materials to Applications |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |