A functional polyamide monomer, functional polyamide and preparation method

A polyamide monomer and polyamide technology, which is applied in the field of biomass-based polymer materials, can solve the problems of poor mechanical properties of elastomers and unsatisfactory mechanical properties, and achieve an excellent effect of aggregated structure

Active Publication Date: 2020-05-19
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the elastomers prepared from these raw materials have poor mechanical properties. Even after adding nanoparticles such as nano-silica, their mechanical properties still cannot reach the ideal state.

Method used

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  • A functional polyamide monomer, functional polyamide and preparation method
  • A functional polyamide monomer, functional polyamide and preparation method
  • A functional polyamide monomer, functional polyamide and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0041] Embodiment 1-1 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0042] Take 100 g of methyl undecylenate and add 1 g of 1,3-diamino-propanol into 4 ml of tetrahydrofuran. After passing argon for half an hour, place it in a 40°C oil bath, add 10ml of sodium methoxide, the solution becomes clear, and react for 20 hours under the reaction conditions of 40°C. The specific reaction equation is as follows:

[0043]

[0044] Finally, a white powdery solid is obtained after purification, and the white powdery solid is a functional polyamide monomer whose side group R1 is -OH, also called a hydroxyl amide monomer.

[0045] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this embodiment is as follows figure 1 As shown, the purity of the obtained functional polyamide monomer 1 is very high. From figure 1 Peak e at 3.38ppm and peak f at 3.8 can be seen that 1,3-diamino-propanol has been successfully integrated into the monomer, and then...

Embodiment 1-2

[0046] Embodiment 1-2 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0047]1 weight part of undecylenic acid methyl ester and 1 weight part of 1,3-diamino-propanol were added to 10 weight parts of tetrahydrofuran. After passing argon for half an hour, place it in an oil bath at 40°C, add 10 -4 After parts by weight of sodium methoxide, the solution becomes clear, reacted for 2 hours under the reaction condition of 40° C., and finally obtained a white powdery solid through recrystallization.

[0048] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this example also shows a high purity.

Embodiment 1-3

[0049] Embodiment 1-3 functional polyamide monomer 1 (R 1 For the preparation of -OH)

[0050] Take 1000 parts by weight of undecylenic acid methyl ester, and add 10 parts by weight of 1,3-diamino-propanol into 1000 parts by weight of tetrahydrofuran. After passing argon for half an hour, place it in an oil bath at 40°C, add 10 parts by weight of sodium methoxide, the solution becomes clear, react for 36 hours at 120°C, and finally obtain a white powdery solid through recrystallization.

[0051] The 1H NMR spectrum of the functional polyamide monomer 1 prepared in this example also shows a high purity.

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Abstract

The invention relates to a function polyamide monomer, polyamide and preparation methods. A structural formula of the function polyamide monomer is shown in the description, and a structural formula of a side group R1 is -OCOR1' or -OH. A structural formula of the function polyamide is shown in the description, the n is larger than or equal to 5 and smaller than or equal to 5000, and the R2 of a main chain is disulfide. The preparation method of the function polyamide comprises the steps: dissolving the function polyamide monomer, dithiol and a catalyst into a solvent; then introducing protection gas of argon and putting into an oil bath pan to react; finally, obtaining a function polyamide product through methyl alcohol precipitation. According to the invention, a synthetic vegetable oil derivative namely the function polyamide monomer is converted into function polyamide in high efficiency, the final yield of the function polyamide is 50% to 100%, and the purity of the function polyamide is 90% to 100%. The function polyamide disclosed by the invention is synthesized from natural raw materials, has no free formaldehyde, benzene and heavy metal and can meet a national environment-friendly material standard. The function polyamide disclosed by the invention has excellent mechanical capacity and mechanical property.

Description

technical field [0001] The invention belongs to the field of biomass-based polymer materials, and in particular relates to a functional polyamide monomer, a functional polyamide and a preparation method. Background technique [0002] Thermoplastic elastomers are found in every aspect of our lives today, such as adhesives, coatings, tubes, tires and fibers. However, most elastomers today are prepared from non-renewable resources, and renewable biomatrix thermoplastic elastomers are still in their infancy. Scientists have also developed many biomass-based thermoplastic elastomers, such as bio-based polyurethane elastomers (Donglin Tang, Christopher W.Macosko, Polym.Chem., 2014, 5, 3231-3237), protein-based thermoplastic elastomers body (Karthik Nagapudi, William T.Brinkman, Macromolecules, 2005, 38(2), pp 345–354), polyester urethane thermoplastic elastomer (Janne andJukka V. Macromolecules, 1997, 30(10), pp 2876–2882), Biomass-based elastomers derived from fatty acids (S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C231/02C07C233/38C08G75/045
CPCC07C233/38C08G75/045
Inventor 汪钟凯宋凌志陶伟周江骏彭强
Owner ANHUI AGRICULTURAL UNIVERSITY
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