Multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and preparation method of multi-block copolymer

A technology of multi-block copolymer and furandicarboxylic acid, which is applied in the field of polymer materials, can solve the problems of limited improvement effect of impact toughness, poor gas barrier property, reduced gas barrier property, etc., and achieves high gas barrier property, low cost, The effect of high tensile strength

Active Publication Date: 2019-11-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor gas barrier properties of PTMG, the introduction of PTMG inevitably leads to a substantial decrease in the gas barrier properties of PEF-mb-PTMG
[0006] In summary, there are still some deficiencies in toughening PEF and PPF, mainly manifested in the random copolymerization with flexible α-ω-diol or alicyclic cyclohexane diol, which can make PE

Method used

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  • Multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and preparation method of multi-block copolymer
  • Multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and preparation method of multi-block copolymer
  • Multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and preparation method of multi-block copolymer

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0072] Example 1

[0073] (1) Add 70g of dimethyl 2,5-furandicarboxylate, 50g of ethylene glycol and 0.1g of silica / titanium dioxide composite into a nitrogen atmosphere reactor, react at 190°C for 1 hour and 200°C for 4 hours. Transesterification product; then 0.08g of ethylene glycol antimony is added and polycondensation is carried out at 240° C. and high vacuum (≦133 Pa) for 3 hours to obtain prepolymer X.

[0074] (2) Add 8g of hydroxy-terminated polycarbonate 1,6-hexanediol with a molecular weight of 4000g / mol and the chain extender hexamethylene diisocyanate to the prepolymer X obtained in step (1) for chain extension In the reaction, the amount of the chain extender is 1.06 times the total molar amount of the prepolymer X and the hydroxyl-terminated polycarbonate 1,6-hexanediol in the reaction system, and the final product is obtained after chain extension at 230° C. for 15 minutes.

[0075] According to the hydrogen spectrum nuclear magnetic determination, the soft segment ...

Example Embodiment

[0076] Example 2

[0077] (1) Add 70g of dimethyl 2,5-furandicarboxylate, 50g of ethylene glycol and 0.1g of silica / titanium dioxide composite into a nitrogen atmosphere reactor, react at 190°C for 1 hour and 200°C for 4 hours. Transesterification product; then 0.08g of ethylene glycol antimony is added and polycondensation is carried out at 240° C. and high vacuum (≦133 Pa) for 3 hours to obtain prepolymer X.

[0078] (2) Add 13g of hydroxy-terminated polycarbonate 1,6-hexanediol with a molecular weight of 4000g / mol and the chain extender hexamethylene diisocyanate to the prepolymer X obtained in step (1) for chain extension In the reaction, the amount of the chain extender is 1.06 times the total molar amount of the prepolymer X and the hydroxyl-terminated polycarbonate 1,6-hexanediol in the reaction system. After chain extension at 230°C for 15 minutes, the final product was obtained.

[0079] According to the hydrogen spectrum nuclear magnetic determination, the soft segment of...

Example Embodiment

[0080] Example 3

[0081] (1) Add 70g of dimethyl 2,5-furandicarboxylate, 60g of ethylene glycol and 0.3g of silica / titanium dioxide composite to a reactor in a nitrogen atmosphere, react at 190°C for 1 hour, and react at 200°C for 4 hours. Transesterification product; then 0.08 g of antimony oxide is added and polycondensation is carried out at 240° C. and high vacuum (≦133 Pa) for 3 hours to obtain prepolymer X.

[0082] (2) Add 24 g of hydroxy-terminated polycarbonate 1,5-pentanediol-co-1,6-hexanediol with a molecular weight of 2000 g / mol to the prepolymer X obtained in step (1) (wherein, The mole fraction of polycarbonate 1,5-pentanediol diol is 45 mol%) and the chain extender hexamethylene diisocyanate for chain extension reaction. The amount of chain extender is the prepolymer X and hydroxyl in the reaction system. 1.06 times the total molar amount of capped polycarbonate 1,5-pentanediol-co-1,6-hexanediol ester. After chain extension at 230°C for 15 minutes, the final produ...

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Abstract

The invention belongs to the field of high polymer materials, and particularly discloses a multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate, and a preparation method of the multi-block copolymer. A macromolecular chain of the multi-block copolymer is composed of a plurality of 2,5-furandicarboxylic acid polyester hard segments (I) and a plurality of aliphatic polycarbonate soft segments (II), and connection units (III) exist between the 2,5-furandicarboxylic acid polyester hard segments and the aliphatic polycarbonate soft segments; and by adjusting the proportion of the hard segments and the soft segments, materials with different properties from thermoplastic plastics with high barrier property, high toughness and high mechanical strength tothermoplastic plastics with super toughness can be obtained so as to meet different application requirements. The preparation method is simple and feasible, and facilitates industrial application.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a multi-block copolymer based on 2,5-furandicarboxylic acid polyester and aliphatic polycarbonate and a preparation method thereof. Background technique [0002] 2,5-furandicarboxylic acid (FDCA) is a bio-based monomer derived from renewable biomass resources cellulose or hemicellulose, its chemical structure is similar to the petroleum-based monomer terephthalic acid (TPA), and Contains a rigid aromatic group furan ring. Polyesters obtained by polymerization of FDCA and a series of diols have comparable physical and chemical properties to TPA-based polyesters, so they can partially replace their applications to alleviate the current shortage of petrochemical resources and excessive carbon dioxide emissions. In addition, FDCA-based polyesters have unique properties different from TPA-based polyesters, such as polyethylene furandicarboxylate (PEF) and polyethylene ter...

Claims

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Application Information

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IPC IPC(8): C08G18/42C08G18/44C08G63/672
CPCC08G18/4247C08G18/44C08G63/672
Inventor 吴林波谢鸿洲
Owner ZHEJIANG UNIV
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