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Branched polyester ionomer aid constructed based on ionic bonds, preparation method and application thereof

A branched polyester and ionomer technology, which is applied in the field of branched polyester ionomer additives and its preparation, can solve the problems of difficult polylactic acid antibacterial and toughening effects, and solve the problem of interface incompatibility , Improve antibacterial properties, reduce damage to mechanical properties

Active Publication Date: 2022-01-07
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a branched polyester ionomer additive based on ionic bond construction and its preparation method and application, to solve the problem of ionomer in the prior art. There is a technical gap in the synthesis and application of bond-structured branched polyester ionomer additives, and it is difficult to effectively improve the antibacterial and toughening effects of polylactic acid by adding only one additive

Method used

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  • Branched polyester ionomer aid constructed based on ionic bonds, preparation method and application thereof
  • Branched polyester ionomer aid constructed based on ionic bonds, preparation method and application thereof
  • Branched polyester ionomer aid constructed based on ionic bonds, preparation method and application thereof

Examples

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Embodiment 1

[0058] A branched polyester ionomer auxiliary agent constructed by ionic bonds, the general structural formula is formula (I) or formula (II):

[0059]

[0060] In the formula, x and y are integers greater than 1 or equal to, z is an integer greater than 4, j is an integer of 2-10, k is an integer of 1-8, and n is an integer of 0-15;

[0061] The structural formula of R- is formula (Ⅲ) or formula (IV) or formula (V):

[0062]

[0063] In the formula, k is an integer of 1-8, M represents COOH or H, and A represents the hydrocarbon group of diisocyanate;

[0064] The structural formula of B- is formula (VI), formula (VII) or formula (VIII):

[0065]

[0066] In the formula, t is an integer of 0-9, i is an integer of 0-15, and X is a halide ion.

[0067] A kind of preparation method of the branched polyester ionomer auxiliary agent of ionic bond construction, comprises the steps:

[0068] S1. Synthesis of trifunctional antibacterial ionic salts: iodomethane and 1-(2-h...

Embodiment 2

[0071] A kind of preparation method of the branched polyester ionomer auxiliary agent of ionic bond construction in the present embodiment, comprises the following steps:

[0072] S1. Synthesis of trifunctional antibacterial ionic salt: Feed bromododecane and 1-(2-hydroxyethyl)imidazole at a molar ratio of 1:1, react under the protection of an inert gas, and react at 75°C for 24 hours, then The product was poured into a beaker filled with diethyl ether and stirred for at least 1 h, then dried by suction to obtain the corresponding 1-(2-hydroxyethyl)-4-dodecyl imidazolium bromide.

[0073] S2, the synthesis of ionomer additives: the obtained 1-(2-hydroxyethyl)-4-dodecyl imidazolium bromide is dissolved in chloroform, and after the dissolution is complete, they are respectively added to the mixture containing methyl isophthalate Carry out extraction reaction in the aqueous solution of sodium benzenesulfonate, the mol ratio of sodium methylbenzenesulfonate isophthalate and 1-(2-h...

Embodiment 3

[0075] A kind of preparation method of the branched polyester ionomer auxiliary agent of ionic bond construction in the present embodiment, comprises the following steps:

[0076] S1. Synthesis of trifunctional antibacterial ionic salt: Feed hexadecane bromide and 1-(2-hydroxyethyl)imidazole at a molar ratio of 1:1, react under the protection of an inert gas, and react at 90°C for 24 hours, then The product was poured into a beaker filled with diethyl ether and stirred for at least 1 h, then dried by suction to obtain the corresponding 1-(2-hydroxyethyl)-4-hexadecyl imidazolium bromide.

[0077] S2, the synthesis of ionomer additives: the obtained 1-(2-hydroxyethyl)-4-hexadecyl imidazolium bromide is dissolved in chloroform, and after the dissolution is complete, respectively add to the mixture containing methyl isophthalate Carry out extraction reaction in the aqueous solution of sodium benzenesulfonate, the mol ratio of sodium methylbenzenesulfonate isophthalate and 1-(2-hyd...

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Abstract

The invention relates to the field of branched polyester ionomers, and discloses a branched polyester ionomer aid constructed based on ionic bonds, a preparation method and application thereof, wherein the ionomer aid is a polyhydroxy-terminated branched polyester ionomer aid prepared by reacting a specially-made three-functional-group antibacterial ionic salt with dibasic acid and diol. According to the technical scheme, the end-capping group of the ionomer aid can bring various special properties, and modification research of other materials is facilitated; when the ionomer aid is applied to the modification of polylactic acid, the toughness and antibacterial property of polylactic acid can be improved; and by adjusting the preparation process and the raw material ratio of the ionomer aid, antibacterial and toughening difunctional ionomer aids with different use requirements can be obtained, so that modified polylactic acid products with different use requirements are obtained.

Description

technical field [0001] The invention relates to the field of branched polyester ionomers, in particular to a branched polyester ionomer additive based on ionic bonds and its preparation method and application. Background technique [0002] Ionic polymers are defined as polymers containing a small number of ionic groups in the main chain or branches, which are mainly composed of nonionic main chains and ionizable or ionic comonomers. Due to the existence of positive and negative ion pairs in the ionomer and the polarity difference between the main chain of the ionomer and the ionic group, the microphase separation between the main chain of the ionomer molecule and the ionic group will occur, forming nano-sized ions. Aggregates, which in turn act as physical cross-links. Ion aggregates make ionomers have some distinctive characteristics compared with other polymers, such as ionomers and their parent polymers, thermal stability and mechanical properties are significantly impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/685C08L67/04C08L67/00C08J5/18
CPCC08G63/685C08L67/04C08J5/18C08L2201/02C08J2367/04C08J2467/00C08L67/00
Inventor 吴芳
Owner CHONGQING UNIV OF ARTS & SCI
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