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Method of preparing a microcrystalline cellulose reinforced polymer composite

A technology of microcrystalline cellulose and polymers, which is applied in the field of preparing microcrystalline cellulose-reinforced polymer composites, and can solve problems such as inability to solve degradation problems

Pending Publication Date: 2021-02-26
THAI POLYETHYLENE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does this method require an additional pelletizing step for the cellulose fibers, it also does not address the degradation issues mentioned above

Method used

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  • Method of preparing a microcrystalline cellulose reinforced polymer composite
  • Method of preparing a microcrystalline cellulose reinforced polymer composite
  • Method of preparing a microcrystalline cellulose reinforced polymer composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1: Preparation of jMCC masterbatch by jet milling process

[0077] Microcrystalline cellulose (MCC) purchased from FMC Biochemical was subjected to jet milling in order to reduce the size of the cellulose (jMCC) and in order to improve the dispersibility of the cellulose in the polypropylene solution. Using the provided by Sturtevant Dry milling of MCC was performed by jet milling (Jetmill) operating at a feed rate of 300 grams per hour to obtain finer particles. To determine the milled particle size, particle size analysis was performed using a laser diffraction particle size analyzer.

[0078] The structure of the starting material, as well as the morphology of the MCC and the MCC after pretreatment (e.g. jet milling) in Figure 1A with Figure 1B shown in . As summarized in Table 1, commercially available MCC from FMC biopolymers has an average particle size of 140 μm, then as characterized by a particle size analyzer and as seen in SEM images, the commer...

Embodiment 2

[0082] Example 2: Preparation of PP / jMCC masterbatch by solution mixing process

[0083] This example shows the preparation of a non-functionalized jMCC masterbatch by a solution mixing process in which a thermoplastic polymer is used as the vehicle in a clay to polymer weight ratio of 1:2.

[0084] Disperse the jet-milled MCCs in an organic solvent suitable for polyolefin polymers. Afterwards, the jMCC was sonicated and homogenized to obtain a good dispersion. jMCC and PP were mixed, precipitated and dried to produce jMCC / PP masterbatch powder.

[0085] To prepare the masterbatch compound, xylene was used as solvent. Disperse jMCC in xylene at a concentration of 0.1 g / mL by stirring, homogenizing, and sonicating for 20 min, respectively, and repeating twice. PP was dissolved in xylene at a concentration of filler to polymer ratio of 1:10 w / v at 120 °C by stirring until the polymer was dissolved. Aliquots of jMCC dispersion and PP polymer solution were combined in a flas...

Embodiment 3

[0086] Example 3: Preparation of highly dispersed cellulose / polypropylene nanocomposites

[0087] The effect of MCC and jMCC (ie from masterbatches) on the mechanical properties of nanocomposite materials prepared by a melt blending process using a twin-screw extruder was investigated. In addition, the dispersion of fillers in the polymer matrix is ​​used to understand the reinforcement mechanism of composite materials.

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Abstract

A method of preparing a microcrystalline cellulose reinforced polymer composite is provided. The method comprises providing discrete pieces of a microcrystalline cellulose, mixing the discrete piecesof the microcrystalline cellulose with a first polyolefin in an organic solvent under agitation, wherein the first polyolefin dissolves at least substantially in the organic solvent and the discrete pieces of microcrystalline cellulose disperses in the organic solvent, to form a dispersion, and precipitating the microcrystalline cellulose reinforced polymer composite from the dispersion using a non-solvent. A microcrystalline cellulose reinforced polymer composite prepared by such a method is also provided.

Description

technical field [0001] Various embodiments relate to a method of making a microcrystalline cellulose-reinforced polymer composite, and the microcrystalline cellulose-reinforced polymer composite made by the method. Background technique [0002] In recent years, biomaterial-based reinforced polymer composites have found applications in a variety of fields ranging from the biomedical industry to the automotive or construction industries. The mechanical properties of polymers, including plastic materials, can be significantly improved by using cellulose fillers. High-strength cellulose materials are particularly suitable for this purpose, as they exhibit excellent mechanical properties, are toxicologically benign and can be sustainably produced from renewable raw materials. [0003] However, to achieve effective reinforcement, the first requirement is the homogeneous dispersion of the cellulose material in the nanocomposite material. A key challenge concerns the hydrophobicit...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08J3/14C08L23/12
CPCC08J3/14C08L1/04C08J3/226C08J3/205C08J2423/12C08J3/215C08J2323/12C08K2201/005C08L23/12
Inventor N·蓬塔麦柴S·特里探马库A·尼沙叻
Owner THAI POLYETHYLENE CO LTD
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