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Microspheric ionomer having crosslinking structure, and preparation method and application thereof

A technology of cross-linked structure and ionomer is applied in the field of microspherical ionomer and its preparation, and achieves the effect of simple preparation process and better nucleation effect

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is still room for improvement in the nucleation effect of the ionomer prepared by the above method on PET.

Method used

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  • Microspheric ionomer having crosslinking structure, and preparation method and application thereof
  • Microspheric ionomer having crosslinking structure, and preparation method and application thereof
  • Microspheric ionomer having crosslinking structure, and preparation method and application thereof

Examples

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preparation example Construction

[0031] The method for preparing ionomer provided by the invention comprises:

[0032] (1) In an organic solvent, in the presence of an initiator, maleic anhydride, monomer B and a crosslinking agent that provide structural unit B shown in formula (2) are contacted to react;

[0033] (2) In the presence of water, the product obtained in step (1) is reacted with an alkali to carry out salification (or hydrolysis).

[0034] In step (1) of the present invention, there is no special requirement to the consumption of each raw material used, preferably, relative to the maleic anhydride of 100mol, the consumption of monomer B is 50-150mol, more preferably 75-100mol. Those skilled in the art can understand that maleic anhydride is a substance that provides the structural unit A represented by formula (1). Monomer B is a substance that provides structural unit B represented by formula (2), and may be α-methylstyrene or styrene.

[0035] Preferably, relative to 100 mol of maleic anhydr...

Embodiment 1

[0051] This example is used to illustrate the microspherical ionomer (or ionomer microsphere) with a cross-linked structure of the present invention and its preparation method.

[0052] (1) Dissolve 100g of maleic anhydride, 118g of α-methylstyrene, 26g of divinylbenzene, and 2g of azobisisobutyronitrile in 1000mL of isoamyl acetate, and react at 70°C for 5 hours under a nitrogen atmosphere . The reacted system was centrifuged by a centrifuge at 5000 rad / min for 30 minutes to obtain cross-linked α-methylstyrene / maleic anhydride polymer microspheres, which were washed and purified with n-hexane and dried in vacuum.

[0053] At the same time, the supernatant after centrifugation is analyzed by LC-MC to measure the amount of remaining monomer, which is obtained by subtracting the amount of monomer (or cross-linking dose) from the input monomer amount (or cross-linking dose). The amount of monomer (or cross-linking dose) that actually participates in the reaction, thereby obtaini...

Embodiment 2

[0056] This example is used to illustrate the ionomer microspheres of the present invention and its preparation method.

[0057] (1) Dissolve 100g of maleic anhydride, 118g of α-methylstyrene, 26g of divinylbenzene, and 2g of azobisisobutyronitrile in 1000mL of isoamyl acetate, and react at 70°C for 5 hours under a nitrogen atmosphere . The reacted system was centrifuged by a centrifuge at 5000 rad / min for 30 minutes to obtain cross-linked α-methylstyrene / maleic anhydride polymer microspheres, washed with methanol, purified, and dried in vacuum.

[0058] (2) 20.5 g of sodium acetate is dissolved in 300 mL of water, and 50 g of cross-linked α-methylstyrene / maleic anhydride polymer microspheres are added to aqueous sodium acetate (relative to the maleic anhydride per mole, the amount of alkali is 1.2 mol) at 100°C for 4 hours. The reacted system was centrifuged under the condition of 5000rad / min for 30 minutes, the solid was stirred and washed with 400mL water, centrifuged und...

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Abstract

The invention relates to the field of high molecular materials and discloses a microspheric ionomer having a crosslinking structure, and a preparation method and an application thereof. The ionomer contains a structural unit A represented as the formula (1), a structural unit B represented as the formula (2), and a crosslinking structure supplied by a crosslinker. The M1 and M2 are independently hydrogen or metal cations, R being hydrogen or methyl group. The invention also discloses a method of preparing the ionomer and the ionomer prepared by the method, wherein the method includes contacting maleic anhydride, a monomer B which supplies the structural unit B represented as the formula (2), and the crosslinker for a reaction; and mixing the reaction product with alkali in the presence ofwater for salinization. The invention also discloses an application of the ionomer, as a nucleating agent, for modifying PET. The ionomer has excellent nucleating effect on the PET, is simple in preparation method and is green and environment-friendly.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a microspherical ionomer with a crosslinked structure and a preparation method and application thereof. Background technique [0002] Ionic polymers, referred to as ionomers or ionomers, are polymer materials with a small amount of ionic groups on the polymer chain, and the molar content of ionic groups does not exceed 15%. Ionomers are a perfect combination of inorganic ions and organic molecules. Due to the introduction of ionic groups, there are special interactions between molecules in ionomers that are not found in general polymers, such as ion-ion interactions; ion pairs and ions Pair interactions; ion-dipole interactions; hydrogen bond interactions, etc. These special interactions make ionomers have many unique properties and have important applications in polymer modification and functional materials. [0003] In addition, the current research on the preparation and app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/12C08F222/06C08F212/36C08F8/44C08L67/02C08L35/06
Inventor 袁浩宋文波张师军刘振杰乔金樑毕福勇
Owner CHINA PETROLEUM & CHEM CORP
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