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Polypropylene/cellulose intercalation nanocrystal composition and preparation method thereof

A technology of polypropylene cellulose and nanocrystals, which is applied in the field of polypropylene compositions, can solve problems such as poor compatibility and low thermal degradation temperature of CNCs, and achieve improved dispersion, improved interface compatibility, and high thermal degradation temperature. Effect

Active Publication Date: 2017-05-31
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problems of poor compatibility between existing CNCs and polypropylene and low thermal degradation temperature of CNCs

Method used

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  • Polypropylene/cellulose intercalation nanocrystal composition and preparation method thereof
  • Polypropylene/cellulose intercalation nanocrystal composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The cellulose intercalation nanocrystals (average length 80nm, average width 4nm, average height 70nm, the substitution degree of long-chain alkane substituted CNCs hydroxyl functional group is 67%, the thermal degradation initiation temperature (N 2 Atmosphere) is 240°C, sulfur content is 0, Chinese Academy of Forestry Wood Industry Research Institute) and the antioxidant (antioxidant 1010, belongs to hindered phenolic antioxidant, the chemical name is four [β-( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and antioxidant 168, which belong to phosphate antioxidants, the chemical name is tris(2,4-di-tert-butylphenol) Phosphite, the weight ratio of antioxidant 1010 and antioxidant 168 is 1:2, and both are fully mixed to obtain described premix from Germany BASF company); Propylene (K9026, Sinopec Beijing Yanshan Branch) was put into a high-speed mixer, and stirred at a speed of 300 rpm for 3 minutes to fully mix the components; The BUSS mixing u...

Embodiment 2

[0062] The cellulose intercalation nanocrystals (average length 200nm, average width 6nm, average height 50nm, the degree of substitution of long-chain alkane substituted CNCs hydroxyl functional groups is 45%, and the thermal degradation initiation temperature (N 2 Atmosphere) is 220°C, sulfur content is 0, Wood Industry Research Institute of Chinese Academy of Forestry Sciences) and the antioxidant (antioxidant 1010, belongs to hindered phenolic antioxidant, the chemical name is four [β-( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and antioxidant 168, which belong to phosphate antioxidants, the chemical name is tris(2,4-di-tert-butylphenol) Phosphite, the weight ratio of antioxidant 1010 and antioxidant 168 is 1:2, and both are fully mixed to obtain described premix from Germany BASF company); Propylene (K9026, Sinopec Beijing Yanshan Branch) was put into a high-speed mixer, and stirred at a speed of 300 rpm for 3 minutes to fully mix the component...

Embodiment 3

[0071] The cellulose intercalation nanocrystal (average length 50nm, average width 4nm, average height 80nm, the degree of substitution of long-chain alkane substituted CNCs hydroxyl functional group is 67%, the thermal degradation initiation temperature (N 2 Atmosphere) is 260 ℃, sulfur content is 0, Wood Industry Research Institute of Chinese Academy of Forestry Sciences) and the antioxidant (antioxidant 1010, belongs to hindered phenolic antioxidant, the chemical name is four [β-( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and antioxidant 168, which belong to phosphate antioxidants, the chemical name is tris(2,4-di-tert-butylphenol) Phosphite, the weight ratio of antioxidant 1010 and antioxidant 168 is 1:2, and both are fully mixed to obtain described premix from Germany BASF company); Propylene (K9026, Sinopec Beijing Yanshan Branch) was put into a high-speed mixer, and stirred at a speed of 300 rpm for 3 minutes to fully mix the components; The...

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Abstract

The invention relates to a polypropylene / cellulose intercalation nanocrystal composition and a preparation method thereof. The polypropylene / cellulose intercalation nanocrystal composition contains the following blended components: polypropylene and cellulose intercalation nanocrystals. According to the polypropylene / cellulose intercalation nanocrystal composition disclosed by the invention, the dispersity of CNCs in polypropylene and the interfacial compatibility of the CNCs and polypropylene are obviously improved, the thermal degradation temperature of the CNCs is effectively increased, and the composition is suitable for a melt blending and extrusion process. In addition, the crystallinity degree of the polypropylene is increased, the rigidity of the polypropylene composition is further obviously improved, the operation process is simple, and the composition is applicable to the fields of high-grade automobile materials, household appliance materials, medical and food packaging materials with high rigidity requirements and the like.

Description

technical field [0001] The invention relates to a polypropylene composition in the field of plastics, in particular to a polypropylene / cellulose intercalation nanocrystal composition and a preparation method thereof. Background technique [0002] Cellulose is the natural biomass material with the most extensive sources and the largest reserves in nature. Under appropriate conditions, the β-1,4-glycosidic bond in the cellulose molecular chain in the amorphous region is preferentially broken to obtain rod-shaped cellulose nanocrystals (celllulosenanocrystals, CNCs) ( B.G. Acta Chemica Scandinavica, 1949, 3, 649-650.). The material has high crystallinity, mechanical strength, reactivity and transparency, huge specific surface area, good biocompatibility, and unique liquid crystal properties and chiral behavior (Moon R.J., Martini A., Nairn J ., Simonsen J., Youngblood J. Chemical Society Reviews, 2011, 40, 3941-3994.), has become a research hotspot in the deep processing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L1/04
CPCC08L23/14C08L1/04
Inventor 郭娟焦立超余敏卢芸殷亚方姜笑梅张永刚
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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