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Polyadipic acid/butylene terephthalate composite material containing modified nanometer microcrystalline cellulose, and preparation method thereof

A technology of butylene terephthalate and nano-crystals, which is applied in the field of polymer composite materials, can solve the problems of insufficient tensile strength, application of nano-microcrystalline cellulose to degradable composite materials, and high cost, so as to shorten the degradation cycle, Effect of improving compatibility and reducing interfacial resistance

Inactive Publication Date: 2019-04-23
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single polybutylene adipate / terephthalate has disadvantages such as insufficient tensile strength and high cost, so modification is needed to improve its mechanical properties and reduce costs
There is no report on the application of nano-microcrystalline cellulose to degradable composite materials

Method used

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  • Polyadipic acid/butylene terephthalate composite material containing modified nanometer microcrystalline cellulose, and preparation method thereof
  • Polyadipic acid/butylene terephthalate composite material containing modified nanometer microcrystalline cellulose, and preparation method thereof
  • Polyadipic acid/butylene terephthalate composite material containing modified nanometer microcrystalline cellulose, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A modified polyadipate / butylene terephthalate composite material containing nano-microcrystalline cellulose and a preparation method thereof, the composition and content of which are calculated in parts by mass are as follows:

[0030]

[0031] Above-mentioned formula reacts according to the following steps:

[0032] (1) Mix a certain amount of the above-mentioned nano-microcrystalline cellulose with 50ml of absolute ethanol, and disperse it ultrasonically for 10 minutes to obtain a uniformly dispersed suspension; mix γ-aminopropyltriethoxysilane coupling agent (KH550) 0.5% of the mass fraction of crystalline cellulose) was dissolved in 50ml of absolute ethanol; the homogeneous suspension was mixed with the coupling agent solution and refluxed at 80°C for 3-5h; cooled to room temperature, centrifuged, and vacuum oven at 80°C Dry in medium. That is, the coupling agent modified nano-microcrystalline cellulose is obtained;

[0033] (2) Put the above-mentioned modified...

Embodiment 2

[0037] A modified polyadipate / butylene terephthalate composite material containing nano-microcrystalline cellulose and a preparation method thereof, the composition and content of which are calculated in parts by mass are as follows:

[0038]

[0039] Above-mentioned formula reacts according to the following steps:

[0040] (1) Mix a certain amount of the above-mentioned nano-microcrystalline cellulose with 50ml of absolute ethanol, and disperse it ultrasonically for 10 minutes to obtain a uniformly dispersed suspension; mix γ-aminopropyltriethoxysilane coupling agent (KH550) 0.5% of the mass fraction of crystalline cellulose) was dissolved in 50ml of absolute ethanol; the homogeneous suspension was mixed with the coupling agent solution and refluxed at 80°C for 3-5h; cooled to room temperature, centrifuged, and vacuum oven at 80°C Dry in medium. That is, the coupling agent modified nano-microcrystalline cellulose is obtained;

[0041] (2) Put the above-mentioned modified...

Embodiment 3

[0045] A modified polyadipate / butylene terephthalate composite material containing nano-microcrystalline cellulose and a preparation method thereof, the composition and content of which are calculated in parts by mass are as follows:

[0046]

[0047] Above-mentioned formula reacts according to the following steps:

[0048] (1) Mix a certain amount of the above-mentioned nano-microcrystalline cellulose with 50ml of absolute ethanol, and disperse it ultrasonically for 10 minutes to obtain a uniformly dispersed suspension; mix γ-aminopropyltriethoxysilane coupling agent (KH550) 0.5% of the mass fraction of crystalline cellulose) was dissolved in 50ml of absolute ethanol; the uniform suspension was mixed with the coupling agent solution and refluxed at 80°C for 3-5h; cooled to room temperature, centrifuged, and placed in a vacuum oven at 80°C drying. That is, the coupling agent modified nano-microcrystalline cellulose is obtained;

[0049] (2) Put the above-mentioned modifie...

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Abstract

The invention discloses a polyadipic acid / butylene terephthalate composite material containing modified nanometer microcrystalline cellulose, wherein the material comprises, by mass, 100 parts of polyadipic acid / butylene terephthalate, and 1-20 parts of modified nanometer microcrystalline cellulose, and is prepared sequentially through high speed blending and extrusion granulation, wherein the preparation method of the modified nanometer microcrystalline cellulose comprises: mixing nanometer microcrystalline cellulose and anhydrous ethanol, ultrasonically dispersing to obtain a nanometer microcrystalline cellulose suspension liquid, dissolving a coupling agent in absolute ethanol to form a coupling agent solution, mixing the nanometer microcrystalline cellulose suspension liquid and the coupling agent solution, refluxing for 2-4 h at a temperature of 75-85 DEG C, cooling to a room temperature, carrying out centrifugal separation, and drying to obtain the modified nanometer microcrystalline cellulose. According to the present invention, by organically modifying the nanometer microcrystalline cellulose, the interface resistance can be effectively reduced, the compatibility with the matrix material can be improved, and the modification requirements polyadipic acid / butylene terephthalate can be met.

Description

technical field [0001] The invention relates to the field of fully biodegradable polymer composite materials, in particular to a nano-microcrystalline cellulose-containing modified polyadipate / butylene terephthalate composite material and a preparation method thereof. Background technique [0002] Poly(butylene adipate / terephthalate) has excellent processing properties and has broad application prospects in industry, agriculture, household, packaging and other fields. However, single polybutylene adipate / terephthalate has disadvantages such as insufficient tensile strength and high cost, so modification is needed to improve its mechanical properties and reduce costs. [0003] Cellulose is the most abundant polysaccharide in nature, accounting for more than 50% of the carbon content in the plant kingdom, and is the main raw material for preparing nanocrystalline cellulose. Cotton fiber, bamboo fiber, banana fiber, wood, sugar cane2, etc. are all rich sources of cellulose. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L1/04C08K5/544C08K5/5435
CPCC08L67/02C08L2201/06
Inventor 施晓旦杨刚金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS
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