Polyesteramide and preparation method thereof

A technology of polyester amide and hexamethylene diamine, which is applied in the field of polymer material preparation, can solve the problems of high cost, less polyester amide, increased method complexity and the like, achieves low cost, improved solvent resistance and heat resistance, The effect of large application value

Active Publication Date: 2020-04-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are fewer types of monomers capable of ring-opening polymerization, generally ABAB-type cyclic monomers, which require several complex synthesis steps to obtain monomers, which inc

Method used

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  • Polyesteramide and preparation method thereof
  • Polyesteramide and preparation method thereof
  • Polyesteramide and preparation method thereof

Examples

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preparation example Construction

[0043] The preparation method of the above-mentioned polyester amide is as follows, using diamine or aminoalcohol as an initiator, using a macrocyclic lactone based on a diacid diol as a monomer, and preparing it by ring-opening-condensation cascade polymerization reaction in the presence of a catalyst Polyester amide with excellent mechanical properties, solvent resistance and thermal stability. The invention effectively solves the deficiencies in the prior art, such as low polyester glass transition temperature and crystallization temperature, poor heat resistance, low polyamide modulus, poor rigidity, and easy creep.

[0044] see figure 1 Shown is the preparation method of the polyester amide of the present invention, that is, a series of aliphatic polyester amide and semi-aromatic polyester amide are obtained through the ring-opening-condensation cascade polymerization method.

Embodiment 1

[0045] Example 1 Synthesis of aliphatic polyester amide poly(1,13-tridecanedioic acid ethylene glycol ester copolymerization by 1,6-hexamethylenediamine and musk T under nitrogen conditions for ring-opening-condensation cascade polymerization 1, 13-tridecane diamide (1,6-hexanediamine) (PEBHA)

[0046] At room temperature, add 1,6-hexanediamine (1.00 g) and musk T (9.00 g) into a 250 ml single-necked flask, and slowly add 20.0 microliters of n-butyl titanate through a microsampler; then The one-necked flask was placed in a salt bath and heated to 240°C, with mechanical stirring, and vacuum polymerization for 60 minutes to finally generate the corresponding polymer PEBHA. For size exclusion chromatograms see figure 2 , and the measured molecular weight was 36.1 kg per mole, demonstrating the successful synthesis of the target product.

Embodiment 2

[0047] Example 2 Synthesis of aliphatic polyester amide poly(1,13-tridecanedioic acid ethylene glycol ester copolymerization 1, 13-Tridecanediyl 1,8-octanediamine) (PEBOA-1)

[0048] At room temperature, add 1,8-octanediamine (0.50 g) and musk T (9.50 g) into a 100 ml three-necked flask, and after blowing nitrogen to remove oxygen, place the three-necked flask in a salt bath and heat it to 220 °C, and After mechanical stirring, 20.0 microliters of n-butyl titanate was slowly added through a microsampler, and ring-opening-condensation cascade polymerization was carried out under nitrogen atmosphere for 60 minutes to generate the corresponding polymer PEBOA-1. For size exclusion chromatograms see image 3 , and the measured molecular weight was 8.30 kg per mole, demonstrating the successful synthesis of the target product.

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Abstract

The invention discloses polyesteramide and a preparation method thereof. According to the preparation method, a diamine or an amino alcohol is used as an initiator, a macrolide based on a diacid diolis used as a monomer, and the polyesteramide is prepared through ring opening-condensation cascade polymerization reaction in the presence of a catalyst. The polyesteramide copolymer prepared by the preparation method disclosed by the invention has good biocompatibility and biodegradability and excellent mechanical properties, solvent resistance and thermal stability; the performance of the polyesteramide material can be regulated and controlled by changing the ratio of ester bonds to amide bonds, the molecular weight and distribution of the polymer and other factors, so that the polyesteramide can be widely applied to the fields of engineering plastics, thermoplastic elastomers, tissue engineering, controlled release and the like.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and particularly relates to a preparation method of polyester amide. Background technique [0002] Common synthesis methods of polyester amides include condensation polymerization and ring-opening polymerization. Among them, the condensation polymerization method has many side reactions, and it is necessary to strictly control the stoichiometric ratio, increase the reaction temperature, prolong the reaction time, and increase the vacuum degree to obtain high molecular weight polymers. Compared with the condensation polymerization method, the ring-opening polymerization method has the advantages of fast reaction speed, mild reaction conditions, and high molecular weight of the polymer. However, there are few types of monomers that can undergo ring-opening polymerization, and they are generally ABAB-type cyclic monomers. Several complex synthesis steps are required to obtain the monomer...

Claims

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Application Information

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IPC IPC(8): C08G69/44
CPCC08G69/44C08G2230/00C08G69/28
Inventor 屠迎锋万雪婷
Owner SUZHOU UNIV
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