CN108727606A - The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer - Google Patents
The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer Download PDFInfo
- Publication number
- CN108727606A CN108727606A CN201810383224.3A CN201810383224A CN108727606A CN 108727606 A CN108727606 A CN 108727606A CN 201810383224 A CN201810383224 A CN 201810383224A CN 108727606 A CN108727606 A CN 108727606A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- graphene oxide
- catalyst
- low molecule
- crystal polymer
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/001—Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica
-
- 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
- C09K19/3804—Polymers with mesogenic groups in the main chain
- C09K19/3809—Polyesters; Polyester derivatives, e.g. polyamides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to graphene oxide technical field and disclose graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer method, include the following steps：1) light base acid monomers, heteroaromatic diacid monomer, aromatic series diphenol monomer and acetic acid are fitted over and is reacted 2-6 hour in 120-150 degrees Celsius in the presence of catalyst A, obtain second phthalein oxo-compound and the mixture of diacid monomer, preparation epoxy group liquid crystal；2) under the conditions of inert gas, 220-330 DEG C, by in step 1) second phthalein oxo-compound and diacid monomer carry out cruel exchange reaction 1-4h in the presence of catalyst B and generate oligomer, then oligomer is carried out to negative pressure of vacuum preparation functional graphene oxide mixed solution under solid-state or molten state；It 3) will be in epoxy group liquid crystal grafted graphene oxide compound.The present invention can avoid damage to the liquid crystal property of macromolecular while assigning strand preferably flexibility, and assign liquid crystal polymer excellent mobile performance and mechanical property.
Description
Technical field
Present invention relates particularly to the methods that graphene oxide grafting low molecule aromatic polymer manufactures liquid crystal polymer, belong to
Graphene oxide technical field.
Background technology
The liquid crystal state existence form important and universal as substance, the meaning of own profound and abundant intension.Liquid crystal is high
Molecule is started late relative to liquid crystalline small molecules, and it is larger can to study space.Liquid crystal polymer is also known as liquid crystal polymer, is with liquid
The polymer of brilliant property combines small molecule liquid crystal and polymer in different ways, be synthesis liquid crystal polymer it is simple and
Practical method.Liquid crystal polymer is divided into two major classes, i.e., using rigid primitive as the backbone chain type of polymer backbone components and with it
Side chain type as side group.The former polymerize by condensation polymerization or gradually obtains, and the latter is obtained by addition polymerization or chain polymerization
It arrives.It can get the backbone chain type rigid chain liquid crystal polymer that can serve as high-strength material by condensation polymerization, obtained by addition polymerization
It must possibly serve for the side chain type flexible chain liquid crystal polymer of photoelectric respone material.
Graphene oxide, it is a kind of by graphite prepared under the conditions of strong oxidizing property containing hydroxyl, epoxy group and carboxyl
Monolithic layer carbon material is widely used in many fields in past 5 years, such as composite material, energy and material, sensor, thin
Membrane material, Flied emission transistor material and technical field of biological material.Due to there are a large amount of oxygen-containing functional group, graphene oxide can be with
Chemical modification graphene oxide is prepared by covalent bond chemical modification or non-covalent bond chemical modification.Chemical modification graphite oxide
Alkene is because be provided simultaneously with the performance of graphene oxide and decorative material, it is possible to preferably apply in above-mentioned field.?
Field of compound material is prepared, chemical modification graphene oxide especially can be better with polymer-modified graphene oxide
It is dispersed in corresponding polymeric matrix, increases the compatibility of filler and matrix, improve the mechanical property of composite material.Currently,
Graphene oxide has been used as filler to be used in many polymeric matrixs, for example, polystyrene, polymethyl methacrylate,
Polyvinyl alcohol, polypropylene, polyurethane, polyester and makrolon.
By method physically or chemically, both the above substance is combined, can make a variety of materials in performance
Learn from other's strong points to offset one's weaknesses, meets a variety of different requirements better than former composition material.Therefore, graphene is grafted low molecule aromatic polymer system
The research of liquid making polycrystalline macromolecule has great importance.
Invention content
The technical problem to be solved in the present invention overcomes existing defect, provides graphene oxide grafting low molecule fragrance polymerization
The method that object manufactures liquid crystal polymer, heteroaromatic diacid monomer have the ability for forming liquid crystal, are a kind of mesomorphic group, function
There is about 150 degree of angle with molecular skeleton plane in group, can have after heteroaromatic diacid monomer is introduced liquid crystal polymer strand
The linear regularity for imitating regulatory molecule chain can avoid damage to the liquid crystal liquid crystal property of macromolecular while assigning strand preferably flexibility
Can, and assign liquid crystal polymer excellent mobile performance and mechanical property, it can effectively solve the problems in background technology.
In order to solve the above technical problem, the present invention provides the following technical solutions：
The method that the present invention provides graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer, including it is as follows
Step：
1) by light base acid monomers, heteroaromatic diacid monomer, aromatic series diphenol monomer and acetic acid fit in the presence of catalyst A in
120-150 degrees Celsius is reacted 2-6 hours, and second phthalein oxo-compound and the mixture of diacid monomer are obtained, and prepares epoxy group liquid crystal；
2) under the conditions of inert gas, 220-330 DEG C, by step 1) second phthalein oxo-compound and diacid monomer urging
Cruel exchange reaction 1-4h is carried out in the presence of agent B and generates oligomer, then oligomer is subjected to vacuum under solid-state or molten state and is born
The standby functional graphene oxide mixed solution of compacting；
3) by epoxy group liquid crystal grafted graphene oxide compound to get to epoxy group liquid crystal grafted graphene oxide
Close object.
As a preferred technical solution of the present invention, the acetic acid in step 1) is matched and the ratio between the amount of substance through base
For 1-1.5:1.
As a preferred technical solution of the present invention, the catalyst A in step 1) is p-methyl benzenesulfonic acid or sulphur
Acid, the quality of catalyst are the 0.Ol-0.5wt% of starting monomer gross mass.
As a preferred technical solution of the present invention, the inert gas in step 2) is nitrogen or hydrogen.
As a preferred technical solution of the present invention, the catalyst B in step 2) is magnesium acetate, zinc acetate, vinegar
Sour sodium, potassium acetate or acetic acid bore in any one.
As a preferred technical solution of the present invention, the dosage of the catalyst B in step 2) is that starting monomer is total
The 0.01-1wt% of quality.
The advantageous effect that is reached of the present invention is：Graphene oxide is grafted low molecule aromatic polymer and manufactures liquid crystal polymer
Method, heteroaromatic diacid monomer, which has, forms the ability of liquid crystal, is a kind of mesomorphic group, functional group and molecular skeleton plane
In the presence of about 150 degree of angle, by heteroaromatic diacid monomer introduce after liquid crystal polymer strand can Effective Regulation strand line
Property regularity, assign strand it is preferably flexible while can avoid damage to the liquid crystal property of macromolecular, and assign liquid crystal height
Molecule excellent mobile performance and mechanical property, in terms of mobility improvement and enhancing that general-purpose plastics can be used for.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment：The method of graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer of the present invention, including
Following steps：
1) by light base acid monomers, heteroaromatic diacid monomer, aromatic series diphenol monomer and acetic acid fit in the presence of catalyst A in
120-150 degrees Celsius is reacted 2-6 hours, and second phthalein oxo-compound and the mixture of diacid monomer are obtained, and prepares epoxy group liquid crystal；
2) under the conditions of inert gas, 220-330 DEG C, by step 1) second phthalein oxo-compound and diacid monomer urging
Cruel exchange reaction 1-4h is carried out in the presence of agent B and generates oligomer, then oligomer is subjected to vacuum under solid-state or molten state and is born
The standby functional graphene oxide mixed solution of compacting；
3) by epoxy group liquid crystal grafted graphene oxide compound to get to epoxy group liquid crystal grafted graphene oxide
Close object.
Further, it is 1-1.5 that the acetic acid in step 1), which is matched with the ratio between the amount of substance through base,:1.
Further, the catalyst A in step 1) is p-methyl benzenesulfonic acid or sulfuric acid, and the quality of catalyst is raw material
The 0.Ol-0.5wt% of monomer gross mass.
Further, the inert gas in step 2) is nitrogen or hydrogen.
Further, the catalyst B in step 2) is during magnesium acetate, zinc acetate, sodium acetate, potassium acetate or acetic acid bore
Any one.
Further, the dosage of the catalyst B in step 2) is the 0.01-1wt% of starting monomer gross mass.
It should be noted that the present invention is the side that graphene oxide is grafted that low molecule aromatic polymer manufactures liquid crystal polymer
Method, when work, heteroaromatic diacid monomer has the ability for forming liquid crystal, is a kind of mesomorphic group, functional group and molecular skeleton
There is about 150 degree of angle in plane, heteroaromatic diacid monomer is introduced can Effective Regulation strand after liquid crystal polymer strand
Linear regularity, assign strand it is preferably flexible while can avoid damage to the liquid crystal property of macromolecular, and assign liquid
Polycrystalline macromolecule excellent mobile performance and mechanical property, in terms of mobility improvement and enhancing that general-purpose plastics can be used for.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (6)
1. the method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer, which is characterized in that including as follows
Step：
1) light base acid monomers, heteroaromatic diacid monomer, aromatic series diphenol monomer and acetic acid are fitted in the presence of catalyst A in 120-
150 degrees Celsius are reacted 2-6 hours, and second phthalein oxo-compound and the mixture of diacid monomer are obtained, and prepare epoxy group liquid crystal；
2) under the conditions of inert gas, 220-330 DEG C, by step 1) second phthalein oxo-compound and diacid monomer in catalyst
Cruel exchange reaction 1-4h is carried out in the presence of B and generates oligomer, then oligomer is subjected to negative pressure of vacuum system under solid-state or molten state
Standby functional graphene oxide mixed solution；
3) by epoxy group liquid crystal grafted graphene oxide compound to get to epoxy group liquid crystal grafted graphene oxide chemical combination
Object.
2. the method for graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer according to claim 1,
It is characterized in that, it is 1-1.5 that the acetic acid in step 1), which is matched with the ratio between the amount of substance through base,:1.
3. the method for graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer according to claim 1,
It is characterized in that, the catalyst A in step 1) is p-methyl benzenesulfonic acid or sulfuric acid, the quality of catalyst is that starting monomer is total
The 0.Ol-0.5wt% of quality.
4. the method for graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer according to claim 1,
It is characterized in that, the inert gas in step 2) is nitrogen or hydrogen.
5. the method for graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer according to claim 1,
It is characterized in that, the catalyst B in step 2) is arbitrary in magnesium acetate, zinc acetate, sodium acetate, potassium acetate or acetic acid brill
It is a kind of.
6. the method for graphene oxide grafting low molecule aromatic polymer manufacture liquid crystal polymer according to claim 1,
It is characterized in that, the dosage of the catalyst B in step 2) is the 0.01-1wt% of starting monomer gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810383224.3A CN108727606A (en) | 2018-04-26 | 2018-04-26 | The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810383224.3A CN108727606A (en) | 2018-04-26 | 2018-04-26 | The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108727606A true CN108727606A (en) | 2018-11-02 |
Family
ID=63939282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810383224.3A Pending CN108727606A (en) | 2018-04-26 | 2018-04-26 | The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108727606A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333612A (en) * | 2019-07-04 | 2019-10-15 | 湘潭大学 | A method of multiple response smart window is prepared by the carbon nanotube that liquid crystal polymer is modified |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519200A (en) * | 2016-10-25 | 2017-03-22 | 中原工学院 | Aromatic heterocyclic liquid crystal high-molecular polymer and preparation method thereof |
| CN107033880A (en) * | 2017-05-16 | 2017-08-11 | 中原工学院 | The preparation method and applications of graphene doping hetero-aromatic ring liquid crystal high-molecular luminous material |
-
2018
- 2018-04-26 CN CN201810383224.3A patent/CN108727606A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519200A (en) * | 2016-10-25 | 2017-03-22 | 中原工学院 | Aromatic heterocyclic liquid crystal high-molecular polymer and preparation method thereof |
| CN107033880A (en) * | 2017-05-16 | 2017-08-11 | 中原工学院 | The preparation method and applications of graphene doping hetero-aromatic ring liquid crystal high-molecular luminous material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333612A (en) * | 2019-07-04 | 2019-10-15 | 湘潭大学 | A method of multiple response smart window is prepared by the carbon nanotube that liquid crystal polymer is modified |
| CN110333612B (en) * | 2019-07-04 | 2021-10-01 | 湘潭大学 | Method for preparing multi-response intelligent window through liquid crystal polymer modified carbon nano tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | 25th anniversary article: Reversible and adaptive functional supramolecular materials:“Noncovalent interaction” matters | |
| CN101279212B (en) | Preparation of intercrossed network water dealcoholizing pervaporation membrane | |
| CN111393692A (en) | Rapid and mild preparation method of covalent bonding room temperature phosphorescent film | |
| CN108219392B (en) | Plastic auxiliary agent with ultraviolet aging resistance and moisture retention functions as well as preparation method and application thereof | |
| CN111378163A (en) | Combined hybrid dynamic polymer and application thereof | |
| CN105131806A (en) | Waterborne fluorescent polyurethane coating and preparation method thereof through prepolymer mixing | |
| WO2019120036A1 (en) | Modified rosin resin, preparation method therefor, and application thereof | |
| CN111040202A (en) | Combined hybrid dynamic polymer and application thereof | |
| CN114736507B (en) | Preparation method of biomass-based modified aldehyde-free environment-friendly artificial board adhesive | |
| Yao et al. | Polypeptide Modification of Multiwalled Carbon Nanotubes by a Graft‐From Approach | |
| CN110437551A (en) | A kind of self-repair type environment-protective rubber material and preparation method thereof | |
| CN108727606A (en) | The method that graphene oxide is grafted low molecule aromatic polymer manufacture liquid crystal polymer | |
| CN109438941B (en) | Preparation method and application of biodegradable rare earth fluorescent film | |
| CN107099108A (en) | A kind of method of the cellulose crosslinked enhancing polyvinyl alcohol film of Laccase Catalyzed oxidation nanometer | |
| CN111926626A (en) | Moisture-proof antibacterial corrugated paper and preparation method thereof | |
| CN111941570A (en) | Furfuryl-based wood modification liquid | |
| CN111440354A (en) | Preparation method and application of bisphenol A molecularly imprinted composite membrane with through hierarchical pore structure | |
| DE102007005462A1 (en) | Producing a hybrimer containing a photochromic or fluorescent protein comprises condensing a metal alkoxide or metal oxide polymer, crosslinking the product and adding the protein | |
| Mandal et al. | Dynamic reversible networks and development of self-healing rubbers: a critical review | |
| Lu et al. | Multifunctional fluorescent self-healing elastomers consisting of polydimethylsiloxane and carbon dots linked via a Schiff base reaction | |
| CN106854288A (en) | A kind of viscosity attapulgite high/polyacrylic acid nano plural gel and preparation method thereof | |
| CN108440693B (en) | High-melt-index resin and preparation method thereof | |
| CN110387069A (en) | A kind of epoxy soybean oil rosin-cellulose-based polymer blend film and its preparation method and application | |
| CN111286293A (en) | PP plastic shell adhesive for storage battery and preparation method of PP plastic shell adhesive | |
| CN107286870A (en) | A kind of EVA adhesive film used for solar batteries and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181102 |
|
| RJ01 | Rejection of invention patent application after publication |