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Functionalized recyclable polymer homopolymer and preparation method and application thereof

A homopolymer and polymer technology, which is applied in the field of functionalized recyclable polymer homopolymer and its preparation, can solve the problems of increasing production cost, complicated composition, complicated process, etc., and achieves low cost, simple operation and wide source. Effect

Active Publication Date: 2020-06-09
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The components of the degradation products of this series of aliphatic polyesters are relatively complex. For example, the degradation products of polylactic acid include lactides with different chiral structures and oligomers with different molecular weights. Therefore, further separation and purification are required to identify For its further use, the process is complicated and difficult, which increases the production cost and has certain deficiencies

Method used

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  • Functionalized recyclable polymer homopolymer and preparation method and application thereof
  • Functionalized recyclable polymer homopolymer and preparation method and application thereof
  • Functionalized recyclable polymer homopolymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Diphenylmethanol (0.0111 g, 0.06 mmol) and (R)-hexahydro-(3,4)-trans-benzofuranone (0.4205 g, 3 mmol) were added to anhydrous and oxygen-treated In the ampoule, after stirring at 200 rpm for 10 minutes, n-butylethylmagnesium (0.06 ml, 0.06 mmol) was added, and left to react at room temperature for 24 hours. After the reaction is over, add benzoic acid / dichloromethane solution to dissolve the mixture, take it out and add it to a cold methanol solution, and a polymer is precipitated. The white solid was separated by filtration, and transferred to a vacuum oven to dry to obtain a polymer, whose spectrum is shown in Figure 8 . The conversion rate through the reaction solution also 1 Calculated by H NMR, the polymer structure is obtained by 1 H NMR identification, molecular weight and dispersion of the polymer were determined by GPC. The conversion rate was 89%, the number average molecular weight of the polymer was 6550 g / mol, and the dispersion coefficient was 1.02. ...

Embodiment 2

[0068] Add benzphenylmethanol (0.0111g, 0.06 mmol) and γ-butyrolactone (0.5165g, 6 mmol) to an anhydrous anaerobic treated ampoule, add 0.25 ml of toluene, and stir at 200rpm for 10 minutes , added di-n-butylmagnesium (0.12 ml, 0.12 mmol), and reacted at -50°C for 24 hours. After the reaction is over, add benzoic acid / dichloromethane solution to dissolve the mixture, take it out and add it to a cold methanol solution, and a polymer is precipitated. The white solid was separated by filtration, and transferred to a vacuum oven to dry to obtain a polymer, whose spectrum is shown in Figure 9 . The conversion rate through the reaction solution also 1 Calculated by H NMR, the polymer structure is obtained by 1 H NMR identification, molecular weight and dispersion of the polymer were determined by GPC. The conversion rate was 82%, the number average molecular weight of the polymer was 7440 g / mol, and the dispersion coefficient was 1.05.

Embodiment 3

[0070] 5-Hexen-1-ol (0.0060 g, 0.06 mmol) and (R)-hexahydro-(3,4)-trans-benzofuranone (0.2523 g, 1.8 mmol) were added to anhydrous In the oxygen-treated ampoule, after stirring at 200 rpm for 10 minutes, di-n-butylmagnesium (0.03 ml, 0.03 mmol) was added, and the mixture was reacted at room temperature for 12 hours. After the reaction is over, add benzoic acid / dichloromethane solution to dissolve the mixture, take it out and add it to a cold methanol solution, and a polymer is precipitated, which is 5-hexen-1-ol functionalized poly((R)-hexahydro- (3,4)-trans-benzofuranone), whose spectrum is shown in figure 1 with figure 2 . The white solid was separated by filtration and transferred to a vacuum oven for drying to obtain a polymer. The conversion rate through the reaction solution also 1 Calculated by H NMR, the polymer structure is obtained by 1 H NMR identification, molecular weight and dispersion of the polymer were determined by GPC. The conversion rate was 87%, the...

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Abstract

The invention discloses a functionalized recyclable polymer homopolymer and a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing a lactone monomer with an initiator, then adding an organic magnesium catalyst into the formed mixture, and carrying out a reaction so as to obtain the functionalized recyclable high-molecular homopolymer. Compared with conventional materials, the homopolymer has the advantage of capability of being completely recycled; and the recycled monomer can be directly re-polymerized to prepare the same polymer material, so the powerful advantage of chemical cycle is obtained, and a solution is provided for solving the problem of plastic treatment. Meanwhile, the homopolymer with a functionalized tail end hasa wide application scope and excellent thermal properties, and meets the requirements of different fields. Compared with the prior art, the method is simple to operate; the catalyst is a commercial compound and is wide in source, low in cost and high in catalytic activity and controllability; and product yield is high.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to a functional recyclable polymer homopolymer and its preparation method and application. Background technique [0002] With the growth of global plastic production, the output can reach millions of tons per year. However, the disposal of waste plastics is mainly incineration, landfill, etc., causing a lot of environmental pollution, so it is necessary to develop new materials to solve the problem. Aliphatic polyester has good biodegradability and biocompatibility, and is an environmentally friendly green polymer material, so it has potential application value. Common aliphatic polyesters include polycaprolactone, polylactic acid, polycarbonate, and polybutylene succinate. The components of the degradation products of this series of aliphatic polyesters are relatively complex. For example, the degradation products of polylactic acid include lactides with different chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/83C07D307/33C07D307/58C07D307/83
CPCC08G63/08C08G63/83C07D307/33C07D307/58C07D307/83
Inventor 郭凯刘一寰朱宁胡欣梁环金钊圣莲珠
Owner NANJING TECH UNIV
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