KR20190098493A - Poly(heteroarylene ether) copolymers and method for preparing the same - Google Patents

Abstract

The present invention relates to a poly(heteroarylene ether) copolymer including biomass derived isohexide and biomass derived furan units, and a manufacturing method thereof and, more specifically, to a poly(heteroarylene ether) copolymer having excellent thermal resistance and blocking properties to oxygen permeation, and a manufacturing method thereof.

Description

Polyheteroarylene ether copolymer and its preparation method {Poly (heteroarylene ether) copolymers and method for preparing the same}

The present invention relates to a polyheteroarylene ether copolymer comprising a biomass-derived isohexide and a biomass-derived furan unit, and a method for preparing the same, more particularly, having excellent heat resistance and excellent barrier properties against oxygen permeation The present invention relates to a polyheteroarylene ether copolymer having a high biomass content and a method of preparing the same.

It is possible to obtain isohexide in the form of anhydrosugar alcohol through dehydration from hexitol, a representative substance of hydrogenated sugar obtained by reducing the glucose isomer of biomass. Unlike conventional raw materials based in the petrochemical industry, isohexide, which can be obtained from renewable natural sources such as corn, wheat and sugar, which contain polysaccharide as a constituent, is a diol with two hydroxyl groups in the molecule. As a diol material, it can be used in trans-ester condensation reaction to manufacture environmentally friendly polyester or polycarbonate polymer material, and has a wide range of industrial applications.

Isohexide is synonymous with 1,4: 3,6-dianhydrohexitol, isomannide, isosorbide and isoide ( three stereoisomers of isoidide), which differ in their chemical properties by the relative configuration difference of the two hydroxyl groups, and isosorbides prepared from sorbitol among these isohesides. Currently, the industrial application range is the widest.

On the other hand, dehydration and oxidation of the biomass fructose isomers can yield FDCA (2,5-furandicarboxylic acid) in the form of furan-based carboxylic acids.

FDCA is itself used in biopolyester polymers or converted to other monomers through appropriate chemical processes and then applied to the polymerization of various biobased polymers.

Polymers synthesized from biomass feedstocks are becoming more prominent in the entire human society because they offer the opportunity to reduce the burden on the environment and health by replacing petrochemical plastics. The industrial success of sustainable plastics has changed from low cost commodities to high value-added engineering plastics (EP). Extensive research is underway to develop biomass-based monomers suitable for sustainable EP. Isosorbide (ISB), also referred to as 1,4: 3,6-dianhydro-D-glucitol, has a bicyclic structure with dihydroxyl groups from which thermally stable polymers, namely polyester and poly It is one of the attractive candidates because it can produce carbonates. ISB is more attractive than bisphenol-A (BPA), especially in terms of the mechanical properties of the polymer as well as its hardness, optical and UV resistance.

On the other hand, FDCA is used in materials similar to and substitutes for petroleum terephthalic acid. The rotational resistance of the heteroaryl group of FDCA is higher than the aryl group of terephthalic acid, and the melt viscosity of the derivative polymer is high, which is advantageous for lightening the plastic and has a high gas barrier property.

ISB has been used to synthesize poly (aryleneether) copolymers (PAEs) via nucleophilic aromatic substitution (S _N Ar) in polar aprotic solvents. Poly (arylene ether) is generally known as a representative super EP material (namely PEEK, PSU, PESU and PPSU) in aerospace, automotive, electronics, biomedical, sterilizing household goods and other applications. have.

PAE is generally classified as a high performance polymer due to its ultra heat resistance, chemical resistance, high glass transition and good mechanical properties. PAE is also available as a super EP material that can withstand continuous use temperatures of 150 ° C or higher without losing good mechanical properties.

Petroleum-based dihalo monomers are commonly used to synthesize poly (aryleneether) copolymers using biomass-based ISBs as diol monomers. However, the biomass content of the synthesized copolymers is at most 45% or less. .

Therefore, in order to synthesize biomass-based poly (arylene ether) copolymers, not only diol monomers but also dihalo monomers can be used as super EP materials with the same mechanical properties as those of conventional petroleum polymers. There is a need for the synthesis of high weight biomass based poly (arylene ether) copolymers having lower coefficients of thermal expansion and oxygen permeability.

US 2014/0186624 A1 US 2015/0299395 A1 KR 10-2016-0025439 KR 10-2016-0082913

 High Performance Polymers, 21: 105-118, 2009  Macromol. Chem. Phys. 2013, 214, 1423-1433  Designed Monomers and Polymers, 2014 Vol. 18, No. 1, 64-72  J. Polym. Sci. Part A: Polym. Chem, 2016 Vol. 54. No. 19, 3094

In order to solve the above problems, the present invention provides a biomass-based dihalofuran monomer derived from FDCA as a counter monomer of an isohexide compound which is a biomass-based diol monomer, and is prepared from the monomers derived from the biomass. An object of the present invention is to provide a biomass-derived polyheteroarylene ether copolymer having a high biomass content and a method of preparing the same.

Another object of the present invention is to provide a polyheteroarylene ether copolymer derived from biomass having a low coefficient of thermal expansion and low oxygen permeability, and a method of manufacturing the same.

It is another object of the present invention to provide a copolymer film comprising the polyheteroarylene ether copolymer derived from the biomass.

In order to achieve the above object, the present invention provides a copolymer derived from biomass comprising a repeating unit represented by the following Chemical Formula 1.

[Formula 1]

(In Formula 1,

R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;

Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene.)

In addition, the present invention is a method of producing a copolymer derived from biomass comprising a repeating unit represented by the following formula 1 by condensation reaction of the isohexide monomer of the formula (2) and the dihalofuran monomer of the formula (3) in the presence of an alkali metal carbonate To provide.

[Formula 1]

[Formula 2]

[Formula 3]

(In Chemical Formulas 1 to 3,

R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;

Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene;

X ₁ and X ₂ are each independently halogen.)

In addition, the present invention provides a copolymer film including a copolymer derived from biomass including the repeating unit represented by Chemical Formula 1.

The polyheteroarylene ether copolymer derived from biomass according to the present invention is a copolymer comprising an isohexide derived from biomass and a furan unit derived from biomass, wherein the weight of the biomass in the copolymer is 50%. The super engineering plastic material can be comprised as mentioned above.

In addition, the biomass-derived copolymer of the present invention not only has a high biomass weight content due to the condensation reaction of biomass-derived monomers other than petroleum-based monomers, but also has excellent thermal resistance and low thermal expansion coefficient and oxygen permeability. Due to its excellent barrier properties, it can be usefully used in commercial super engineering plastic materials such as aerospace, automotive, electronics, biomedical and sterilizing household goods such as food packaging materials, liquid crystal display devices, solar cells, and EL devices.

Figure 1 is a polymer shape after precipitation of the water / methanol solvent in Example 1.
2 is a film shape prepared in Example 5.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated more concretely. Unless otherwise defined in the technical terms and scientific terms used at this time, have a meaning commonly understood by those of ordinary skill in the art to which the present invention belongs, unnecessarily obscure the subject matter of the present invention in the following description Description of known functions and configurations that may be omitted.

As used herein, the term "copolymer derived from biomass" refers to a copolymer prepared by condensation of an isohexide monomer derived from biomass with a dihalofuran monomer derived from biomass.

As used herein, the term “alkyl” refers to a monovalent straight or crushed saturated hydrocarbon radical consisting solely of carbon and hydrogen atoms, which may have from 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms. Examples of such alkyl radicals include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, hexyl and the like.

As used herein, the term “aryl” is an organic radical derived from an aromatic hydrocarbon by one hydrogen removal, either single or fused, preferably containing from 4 to 7, preferably 5 or 6 ring atoms in each ring. It includes a ring system, a form in which a plurality of aryl is connected by a single bond. Specific examples include, but are not limited to, phenyl, naphthyl, biphenyl, anthryl, indenyl, fluorenyl, and the like.

As used herein, the term “arylene” refers to an organic radical derived from an aromatic hydrocarbon by two hydrogen removals, and also includes forms in which arylene is connected in a single bond.

The present invention provides a polyheteroarylene ether copolymer derived from biomass comprising an isohexide derived from biomass and a furan unit derived from biomass, and the copolymer is a repeating unit represented by the following Chemical Formula 1 It includes.

[Formula 1]

(In Formula 1,

R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;

Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene.)

The biomass-derived copolymer of the present invention is prepared by the condensation reaction of an isohexide monomer derived from biomass and a dihalofuran monomer derived from biomass, and isohexide and furan units derived from biomass are prepared. Including high biomass content, the coefficient of thermal expansion and oxygen permeability is significantly lowered. In addition, the biomass-derived copolymers of the present invention not only have equivalent molecular weight and PDI to petroleum-based polymers, but also have mechanical strengths. In addition, the copolymer of the present invention can solve the problem of petroleum depletion because it uses monomers derived from biomass as a raw material. Therefore, the biomass-derived copolymer of the present invention not only has a high biomass weight content, but also has excellent heat resistance and excellent barrier property against oxygen permeation, so that aerospace, automobile, electronics, biomedical, sterilizing household goods, etc. It can be usefully used in the commercial super engineering plastic material field.

R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl, but are not limited to each independently hydrogen, methyl, ethyl, propyl, butyl , Phenyl, biphenyl or naphthyl, and may be substituted or unsubstituted.

Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene, but are not limited to each independently phenylene, biphenylene, naphthylene, anthracenylene, phenanthryl, pyrenylene or tetra And may be substituted or unsubstituted.

In the description of "substituted or unsubstituted,""substituted" means a case where it is further substituted with an unsubstituted substituent, and the substituents further substituted with R ₁ , R ₂ , Ar ₁ and Ar ₂ are each halogen, C1-C10. Alkyl, halogen is substituted at least one selected from the group consisting of C1-C10 alkyl, C6-C20 aryl, C3-C10 cycloalkyl, cyano, formyl, carboxyl or nitro.

Preferably, the biomass-derived copolymer may be a copolymer including a repeating unit having the following structure.

(R ₁ and R ₂ are each independently hydrogen, C ₁ -C 3 alkyl or C 6 -C 12 aryl.)

The biomass-derived copolymer has a weight average molecular weight (in terms of polystyrene by gel permeation chromatography (GPC)) of 25,000 or more, preferably 50,000 to 300,000 g / mol, and may be usefully used in the field of super engineering plastic materials. have.

In addition, the present invention is a method of producing a copolymer derived from biomass comprising a repeating unit represented by the following formula 1 by condensation reaction of the isohexide monomer of the formula (2) and the dihalofuran monomer of the formula (3) in the presence of an alkali metal carbonate To provide.

[Formula 1]

[Formula 2]

[Formula 3]

(In Chemical Formulas 1 to 3,

R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;

Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene;

X ₁ and X ₂ are each independently halogen.)

In one embodiment of the present invention, the condensation reaction in terms of improving the reactivity of the isohexide having a low nucleophilic aromatic substitution reaction efficiency and the molecular weight and mechanical properties of the produced biomass copolymer is as follows It may be carried out in the presence of a crown ether compound represented by the formula (4).

[Formula 4]

(In Formula 4, n is an integer of 3 to 6.)

In one embodiment of the present invention, when the condensation reaction of the isohexide monomer and the dihalofuran monomer in the presence of an alkali metal carbonate, a crown ether-based compound may be additionally added to achieve a high weight average molecular weight of 50,000 or more. Due to the weight average molecular weight it can have good mechanical strength.

The alkali metal carbonate may be selected from the group consisting of potassium carbonate, sodium carbonate and mixtures thereof as a catalyst of the reaction.

There is no particular limitation on the amount of the alkali metal carbonate used, but when the amount of the alkali metal carbonate is too small, the reaction rate is slow. On the contrary, when the amount is too high, the residual alkali metal carbonate may discolor or degrade the color of the product. The metal carbonate may be used in an amount of 0.5 to 3 mol, preferably 1 to 2 mol, and more preferably 1 to 1.5 mol, based on 1 mol of the isohexide monomer.

There is no particular limitation on the amount of the dihalofuran monomer used, but 0.5 to 3 moles with respect to 1 mole of the isohexide monomer in terms of the efficiency of the reaction, 0.5 to 3 moles with respect to 1 mole of the isohexide monomer in the reaction efficiency. It is preferably 0.8 to 1.2 moles, more preferably 0.9 to 1.1 moles.

The amount of the crown ether-based compound is not particularly limited, but may be used in an amount of 0.005 to 0.5 moles, preferably 0.01 to 0.5 moles, based on 1 mole of the isohexide monomer.

In one embodiment of the present invention, petroleum-based diol monomers other than the isohexide monomer derived from the biomass may further include, for example, aromatic diol, alicyclic diol, aliphatic diol or a combination thereof.

The aromatic diols are bisphenol A, 4,4'-dihydroxy-diphenyl sulfone, 4,4'-biphenol, hydroquinone, 4,4'-dihydroxy-diphenyl ether, 3- (4-hydroxy Hydroxyphenoxy) phenol, bis (4-hydroxyphenyl) sulfide and combinations thereof, and the alicyclic diols are 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol , 1,2-cyclohexanedimethanol, tricyclodecanedimethanol, adamantanediol, pentacyclopentadecandimethanol, and combinations thereof, and the aliphatic diol is ethylene glycol, 1,3- Propanediol, 1,2-propanediol, 1,4-butanediol, 1,3-butanediol, 1,2-butanediol, 1,5-heptanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol And combinations thereof, but is not limited thereto.

The diol monomer may be used in 0.01 to 3 moles, preferably 0.1 to 1.5 moles with respect to 1 mole of the isohexide monomer in terms of the efficiency of the reaction.

In one embodiment of the present invention, petroleum-based dihalo aryl monomers other than the dihalo furan monomer may further include, specifically, may be represented by the formula (A).

[Formula A]

(In Formula A,

Ar ₁₁ Ar ₁₃ to each independently represent a substituted or unsubstituted C6-C20 arylene;

L ₁₁ and L ₁₂ are each independently —SO ₂ — or —C (═O) —;

X ₁₁ and X ₁₂ are each independently halogen;

m is an integer from 0 to 10.)

The dihalo aryl monomers include 4,4'-difluorobenzophenone, 4,4'-dichlorobenzophenone, 1,4-di (p-fluorobenzoyl) benzene, 4,4'-dichlorodiphenylsulfone, 4,4'-difluorodiphenylsulfone and combinations thereof, but is not limited thereto.

The dihalo aryl monomer may be used in an amount of 0.01 to 3 moles, preferably 0.1 to 1 mole based on 1 mole of the isohexide monomer in terms of efficiency of the reaction.

In one embodiment of the present invention, the polymerization reaction, specifically for 2 to 100 hours at a temperature of 100 to 250 ℃ and atmospheric pressure, a polymerization solvent known in the art, for example N-methyl-2- Polymerization such as pyrrolidone (NMP), dimethyl sulfoxide (DMSO), dimethylacetamide (DMAc), dimethylformamide (DMF), sulfolane, diphenyl sulfone (DPS), dimethyl sulfone (DMS) It may be carried out in the reaction solvent, but is not limited thereto. After the completion of the polymerization, the resultant polymerization reaction of which the viscosity is increased is diluted with the same solvent as the polymerization solvent to lower the viscosity, and then alkali metal, which is a salt of the alkali metal of the alkali metal carbonate catalyst and the halogen of the dihalogen compound, through a celite filter. Remove halides. Thereafter, the diluted and filtered reaction product is precipitated in a solvent (for example, alcohol such as methanol, water, or a mixed solvent thereof), and then washed with water or the like to obtain a polyheteroarylene ether copolymer derived from the biomass of the present invention. Manufacture.

In addition, the present invention provides a copolymer film including a copolymer derived from biomass including the repeating unit represented by Chemical Formula 1.

The film can be coated in a variety of ways, for example, by coating (eg, spin coating, flow coating, dip coating, doctor blade coating, brush coating, cup coating, and spray coating), printing (e.g. For example, it may be formed using microgravure, inkjet, reverse microgravure, comma, slot / die coating, and lip coating. The film may be formed on a substrate or may be formed on a release agent.

Preferably the copolymer film according to an embodiment of the present invention has a coefficient of thermal expansion (CTE) of less than 32 ppm / ℃, more preferably 25 to 31.5 ppm / ℃ at 23 to 80 ℃, by the ASTM D 3985 method Oxygen permeability (OTR) measured at a temperature of 25 ° C. and relative humidity of 0% is less than 0.6 × 10 ⁻¹³ cm ³ · cm / cm ² · s · Pa, more preferably 0.4 to 0.55 x 10 ^-13 cm ³ Cm / cm ² · s · Pa

In addition, the copolymer film is excellent in tensile modulus of 1.7 GPa or more, preferably 1.8 to 3.0 GPa, 20 MPa or more, preferably 20 to 100 MPa tensile strength, 2.0 or more, preferably 2.0 to 3.0 elongation. It can exhibit high mechanical strength and increase injection and extrudability.

The copolymer film has a low coefficient of thermal expansion and oxygen permeability, and thus may be usefully used in the field of commercial super engineering plastic materials.

Hereinafter, a method for preparing a polyheteroarylene ether copolymer derived from a biomass including an isohexide unit and a furan unit derived from a biomass of the present invention will be described in more detail. However, the following examples are presented by way of illustration of the present invention by no means is limited by the scope of the present invention, the scope of the present invention is defined only by the claims below.

Also, unless defined otherwise, all technical and scientific terms have the same meanings as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of effectively describing particular embodiments only and is not intended to be limiting of the invention.

[Measurement of physical properties]

1) Molecular weight (g / mol) and molecular weight distribution: Standard polystyrene conversion by gel permeation chromatography (GPC) measurement equipped with a differential index detector (RI detector) using dimethylformamide (DMF) as a solvent. The molecular weight value and molecular weight distribution of were calculated | required.

GPC Equipment: Waters' ACQUITY APC

Column: ACQUITY APC ^{TM from} Waters

Column temperature: 30 ℃

Input amount: 50 μl

Flow rate: 0.62 ml / min

2) Tensile strength (MPa), Elongation (%), Tensile modulus (GPa): The dried film was tested using a dumbbell cutter (Dumbbell cutter, Labfactory), dumbbell type, length 25.5 mm, width 3.11 mm, thickness 3.1 mm A specimen having a size of was prepared. Intstron 5943 (British) equipment was measured according to the standard and method according to ASTM D638-03. A load cell of 10 KN and a crosshead speed of 10 mm / min were measured at 25 ° C., and the average value of five measurements was taken for each sample.

3) Coefficient of Thermal Expansion (CTE) (ppm / ℃, 23-80 ℃): 150 ℃ at room temperature under nitrogen stream according to TMA-Method using TMA (Thermomechanical Analysis, TA instrument TMA 2940) Repeated three times at a rate of 5 ℃ / min until the measurement of the dimensional change (dimension change) with the temperature was calculated from this. In the second and third measurements, the average of the calculated values was used as actual measurements using the changed lengths in the temperature range of 23 to 80 ° C.

4) Oxygen transmission rate (OTR) (x10 ^-13 cm ³ ㆍ cm / cm ² ㆍ s · Pa): Oxygen transmission rate (OTR) is an ASTM D 3985 method using 8001 oxygen permeating anlyzer from System illinois. It was measured at room temperature (25 ℃) and relative humidity 0%. The film is placed in a diffusion chamber, one side of which has oxygen of 99.9% oxygen in the film area of 50 cm ² , and the other side is vacuumed. The amount of oxygen that penetrates into the vacuum space from the oxygen space is measured. The amount of oxygen penetrated is calculated by a coulometric sensor.

Preparation Example 1 Preparation of 2,5-Bis (4-fluorobenzoyl) furan (BFBF)

(Step 1) 2,5- furandicarbonyl  dichloride ( FDCC Manufacturing

2,5-furandicarbonyl dichloride (FDCC) was synthesized from FDCA and thionyl chloride. FDCA (10.0 g, 64.1 mmol), thionyl chloride (20 g, 168 mmol) and DMF (0.2 mL) were added to a 250 mL round bottom flask connected with a cooler and a nitrogen line, and the mixture was refluxed at 80 ° C. for 4 hours. It was. After the reaction, the remaining thionyl chloride and DMF were removed by distillation under reduced pressure. FDCC was purified by sublimation after recrystallization from hexane. Yield: 78% (9.6 g)

( 2 steps ) 2,5- Bis (4-fluorobenzoyl) furan  ( BFBF Manufacturing

2,5-Bis (4-fluorobenzoyl) furan (BFBF) was synthesized by Friedel-Crafts reaction of FDCC with fluorobenzene. FDCC (9.00 g, 46.6 mmol) and fluorobenzene (13.4 g, 139.9 mmol) were added to a 250 mL round bottom flask connected with a cooler and a nitrogen line, and the reactor was cooled to 0 ° C. AlCl ₃ (17.4 g, 130.5 mmol) was added to the reactor, the mixture was stirred for 1 hour, and then heated to 70 ° C. and stirred for additional 12 hours. The reactor was cooled to room temperature and then precipitated in methanol. The precipitate was washed several times with 1N aqueous HCl solution and water after the filter and then recrystallized with a toluene / hexane (1/1 v / v) mixed solvent. Yield: 89% (12.96 g)

ELEM. ANAL. calculated for C ₁₈ H ₁₀ O ₃ F ₂ : C 69.23%, H 3.22%; found: C 69.02%, H 3.33%. FTIR (KBr): ν 1645 (vs), 1598 (s), 1555 (m), 1507 (m), 1240 (s), ¹ H NMR (300 MHz, DMSO-d ₆ , δ): 7.49 (t, J = 7 Hz, 4H, Ar H), 7.58 (s, 2H, Ar H), 8.11 (t, J = 7 Hz, 4H, Ar H).

Example 1

In a 2 L three-necked flask equipped with a mechanical stirrer, thermometer and condenser, isosorbide (ISB) (0.278 mol, 40.63 g), 2,5-bis (4-fluorobenzoyl) furan (2,5-bis ( 4-fluorobenzoyl) furan, BFBF) (0.278 mol, 86.81 g), K ₂ CO ₃ (0.3469 mol, 47.94 g), 18-crown-6-ether (0.0139 mol, 3.67 g ) And DMSO (350 mL) were added. The reaction mixture was immersed in an oil-bath capable of precise temperature control while allowing a weak nitrogen flow to flow toward the condenser, and the reaction mixture was heated up to 160 ° C. for 20 hours. DMSO (500 mL) was further added to the reaction mixture having a higher viscosity, the temperature was lowered to 100 ° C., the viscosity was lowered, and then precipitated in a 1 / 1v / v mixed solvent of methanol and water after the celite filter. The precipitate was filtered and washed and dried to give a polyheteroarylene ether copolymer. Weight average molecular weight 78,000 g / mol, PDI 1.62.

Example 2

The reaction was carried out in the same manner as in Example 1, except that 18-crown-6-ether was not added, thereby obtaining a polyheteroarylene ether copolymer. Weight average molecular weight 25,400 g / mol, PDI 1.72.

Example 3

Reaction was carried out in the same manner as in Example 1, except that a mixture of ISB (29.23 g, 0.200 mol) and bisphenol-A (bisphenol-A, BPA) (17.81 g, 0.078 mol) was added as a diol monomer. Heteroarylene ether copolymer was obtained. Weight average molecular weight 82,500 g / mol, PDI 1.60.

Example 4

As a dihalo monomer, a mixture of BFBF (43.41 g, 0.139 mol) and 4,4'-difluorobenzophenone (DFBP) (30.33 g, 0.139 mol) was added instead of BFBF. Was reacted in the same manner as in Example 1 to obtain a polyheteroarylene ether copolymer. Weight average molecular weight 81,100 g / mol, PDI 1.59.

Comparative Example 1

The polyarylene ether copolymer was obtained in the same manner as in Example 1 except that DFBP (60.66 g, 0.278 mol) was added instead of BFBF as the dihalo monomer. Weight average molecular weight 55,100 g / mol, PDI 1.68.

Comparative Example 2

A polyheteroarylene ether copolymer was obtained in the same manner as in Example 1, except that BPA (63.46 g, 0.278 mol) was added instead of ISB as the diol monomer. Weight average molecular weight 49,500 g / mol, PDI 1.67.

Comparative Example 3

Polyarylene was reacted in the same manner as in Example 1 except that DFBP (60.66 g, 0.278 mol) was added instead of BFBF as a dihalo monomer and BPA (63.46 g, 0.278 mol) was used instead of ISB as a diol monomer. An ether copolymer was obtained. Weight average molecular weight 113,000 g / mol, PDI 1.66.

Example 5 Preparation of Copolymer Film

The copolymer resin (1 g) of Example 1 was dissolved in DMAc (10 mL) to prepare a 10 wt% solution, and then applied to a glass substrate at a constant rate using an applicator. The applied solution was first heated for 12 hours at a rate of 0.1 ° C. per minute in a range of 60 to 120 ° C. in a hot air dryer capable of stepping up temperature, and further vacuum drying was performed at 120 ° C. for 12 hours. After immersing the completely dried polymer film in a water bath, the film formed on the glass substrate was peeled off to obtain a perfect film without deformation, which was removed in a vacuum oven at 100 ° C. to remove moisture inherent in the surface. To obtain a 100 mu thick transparent and tough copolymer film.

[Examples 6 to 8] and [Comparative Examples 4 to 6] Preparation of Copolymer Film

A copolymer film was prepared in the same manner as in Example 5, except that the copolymer resins obtained in Examples 2 to 4 and Comparative Examples 1 to 3 were used instead of the copolymer resin of Example 1.

Synthesis conditions of the copolymers obtained in Examples 1 to 4 and Comparative Examples 1 to 3 and the weight average molecular weight and PDI values of the copolymers are described in Table 1 below, Examples 5 to 8 and Comparative Examples 4 to 6 Physical properties of the copolymer film obtained in Table 2 are shown below.

Copolymer Diol monomers Dihalo monomers Crown ether Mw (g / mol) PDI Example 1 ISB BFBF O 78,200 1.62 Example 2 ISB BFBF X 25,400 1.72 Example 3 ISB / BPA BFBF O 82,500 1.60 Example 4 ISB BFBF / DFBP O 81,100 1.59 Comparative Example 1 ISB DFBP O 55,100 1.68 Comparative Example 2 BPA BFBF O 49,500 1.67 Comparative Example 3 BPA DFBP O 113,000 1.66

Copolymer
film Copolymer CTE
(ppm / ℃, 23-80 ℃) OTR
(x10 ^-13 cm ³ ㆍ cm / cm ² ㆍ s · Pa) Tensile Modulus
(GPa) The tensile strength
(MPa) Elongation
(%) Example 5 Example 1 26.5 0.45 2.7 38 2.2 Example 6 Example 2 29.8 0.42 1.8 20 2.6 Example 7 Example 3 31.3 0.49 2.6 36 2.1 Example 8 Example 4 30.5 0.52 2.5 33 2.0 Comparative Example 4 Comparative Example 1 59.1 0.99 2.2 27 2.0 Comparative Example 5 Comparative Example 2 65.9 0.92 2.5 35 2.1 Comparative Example 6 Comparative Example 3 66.8 1.00 2.7 33 1.8

From Table 1 and Table 2, the biomass-derived copolymer of the present invention is not only polymerizable with the molecular weight and PDI equivalent to that of the copolymer of Comparative Example 3 prepared with petroleum monomers, but also has the same mechanical strength. Able to know.

In addition, from Table 2, the polymer film made of the copolymer of the present invention is significantly lower thermal expansion coefficient and low oxygen permeability, that is, 32 ppm / ℃ compared to the polymer film prepared from the polymer of Comparative Example 3 made only of the petroleum monomer It can be seen that it exhibits a coefficient of thermal expansion of less than and an oxygen permeability of less than 0.6 × 10 ⁻¹³ cm ³ · cm / cm ² · s · Pa. This very low coefficient of thermal expansion and oxygen permeability can be seen that both the diol monomer and dihalo monomer used to prepare the copolymer is a monomer derived from biomass, and is due to the high biomass content in the copolymer.

However, the polymer film prepared from the copolymer of Comparative Example 1 prepared using the petroleum based DFBP monomer while using the ISB monomer derived from the biomass is the copolymer film prepared from the copolymer of Comparative Example 3 prepared only from the petroleum based monomer. The coefficient of thermal expansion was slightly lower by 11.5%. In addition, the copolymer film prepared from the copolymer of Comparative Example 2 prepared by using the BFBF monomer derived from biomass while using the petroleum-based BPA monomer is a copolymer prepared from the copolymer of Comparative Example 3 prepared only by the petroleum monomer Oxygen permeability was slightly lowered by 8% in the film. The films prepared from the copolymers of Comparative Examples 1 to 3 still have a thermal expansion coefficient of 50 ppm / ° C. or higher, which not only has a problem involving deformation or expansion due to heat, but also an oxygen permeability of 0.9 × 10 ⁻¹³ cm Higher than ³ ㆍ cm / cm ² ㆍ s · Pa, there is a problem that the oxidation inhibitory power is lowered when applying packaging materials such as electrical and electronics.

However, films made from the copolymers of the present invention made from diols and dihalo monomers derived from non-petroleum biomass have unexpectedly low coefficients of thermal expansion and low oxygen permeability to constitute superengineered plastic materials.

Claims (10)

A copolymer derived from biomass comprising a repeating unit represented by Formula 1 below.
[Formula 1]

(In Formula 1,
R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;
Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene.) The method of claim 1,
Ar ₁ And Ar ₂ is each independently a phenylene, biphenylene, naphthylene, anthracenylene, phenanthrylene, pyrenylene or tetrasenylene copolymer derived from biomass. The method of claim 1,
The copolymer is a copolymer derived from biomass having a weight average molecular weight of 25,000 or more. A method of preparing a copolymer derived from biomass comprising a repeating unit represented by the following Chemical Formula 1 by condensation reaction of an isohexide monomer of the following Chemical Formula 2 with a dihalofuran monomer of the following Chemical Formula 3 in the presence of an alkali metal carbonate.
[Formula 1]

[Formula 2]

[Formula 3]

(In Chemical Formulas 1 to 3,
R ₁ and R ₂ are each independently hydrogen, substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C20 aryl;
Ar ₁ And Ar ₂ are each independently substituted or unsubstituted C6-C20 arylene;
X ₁ and X ₂ are each independently halogen.) The method of claim 4, wherein
The condensation reaction is carried out in the presence of a crown ether compound represented by the following formula (4), the preparation method.
[Formula 4]

(In Formula 4, n is an integer of 3 to 6.) The method of claim 4, wherein
The use amount of the alkali metal carbonate is 0.5 to 3 moles per 1 mole of the isohexide monomer, the use amount of the dihalo furan monomer is 0.5 to 3 moles per 1 mole of the isohexide monomer. The method of claim 6,
The crown ether compound is used in an amount of 0.005 to 0.5 mol based on 1 mol of the isohexide monomer. The method of claim 4, wherein
It further comprises a diol monomer or dihalo aryl monomer. A copolymer film comprising the copolymer derived from the biomass of any one of claims 1 to 3. The method of claim 9,
The copolymer film has a coefficient of thermal expansion (CTE) of less than 32 ppm / ° C at 23 to 80 ° C., and an oxygen permeability (OTR) of 0.6 at a temperature of 25 ° C. and a relative humidity of 0% by the ASTM D 3985 method. x 10 ^-13 cm ³ Copolymer film having less than cm / cm ² ㆍ s · Pa.

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