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Complete biodegradation high-tenacity polypropylene carbonic ester compound and preparation method thereof

A polypropylene carbonate and composition technology, which is applied in the field of completely biodegradable high-toughness polypropylene carbonate composition and its preparation field, can solve the problems of the influence of the biodegradability of materials, difficulty in maintaining the transparency of PPC, etc., and achieves high complete biodegradability. Degradability, high transparency, the effect of preventing degradation

Inactive Publication Date: 2012-02-01
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the blending modification of PPC by the above method, due to the appearance of multi-phase structure in the composition, it is generally difficult to maintain the original transparency of PPC, and the addition of other components also affects the biodegradation of the blended material. sexual influence

Method used

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  • Complete biodegradation high-tenacity polypropylene carbonic ester compound and preparation method thereof

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preparation example Construction

[0025] The present invention also provides a kind of preparation method of above-mentioned polypropylene carbonate composition, comprising:

[0026] Mix polypropylene carbonate, poly 1,2-propylene glycol succinate and maleic anhydride and masticate at 120°C to 140°C to obtain a polypropylene carbonate composition, polypropylene carbonate, poly 1,2 - The mixing ratio of propylene glycol succinate and maleic anhydride is 100:4-100:0.1-1 by weight.

[0027] For the method of masticating, the present invention preferably adopts internal mixer to blend masticating, and the banburying temperature is set as 120°C to 140°C, preferably as 125°C to 140°C, and the rotating speed is preferably set as 50rpm to 120rpm, and the banburying time is preferably After 5 minutes to 10 minutes, the polypropylene carbonate composition is obtained after extrusion granulation.

Embodiment 1

[0032] 1. Weigh the following components by weight:

[0033] Polypropylene carbonate 100g

[0034] 4g of poly-1,2-propylene glycol succinate with a number average molecular weight of 800

[0035] Maleic anhydride 0.3g

[0036] 2. Add the above-mentioned polypropylene carbonate, poly-1,2-propylene glycol succinate and maleic anhydride to the internal mixer in sequence, set the temperature of the internal mixer to 140°C, and the rotational speed to 60rpm. After 5 minutes of internal mixing The polypropylene carbonate composition was obtained, and the tensile strength, elongation at break and light transmittance of the polypropylene carbonate composition were measured, and the test results are listed in Table 1.

Embodiment 2

[0038] 1. Weigh the following components by weight:

[0039] Polypropylene carbonate 100g

[0040] 8g of poly-1,2-propylene glycol succinate with a number average molecular weight of 800

[0041] Maleic anhydride 0.1g

[0042] 2. Add the above-mentioned polypropylene carbonate, poly-1,2-propylene glycol succinate and maleic anhydride to the internal mixer in sequence, set the temperature of the internal mixer to 140°C, and the rotational speed to 50rpm. After 5 minutes of internal mixing The polypropylene carbonate composition was obtained, and the tensile strength, elongation at break and light transmittance of the polypropylene carbonate composition were measured, and the test results are listed in Table 1.

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Abstract

The invention provides a polypropylene carbonic ester compound and a preparation method thereof. The polypropylene carbonic ester compound comprises polypropylene carbonic ester, poly1,2-propanediol succinate and maleic anhydride, and the weight ratio of the polypropylene carbonic ester, the poly1,2-propanediol succinate and the maleic anhydride is 100:4-100:0.1-1. The polypropylene carbonic ester compound has higher tenacity and has the break elongation rate of 1,108%, and the material has higher transparency. Since the polypropylene carbonic ester and the poly 1,2-propanediol succinate havecomplete biodegradation, the polypropylene carbonic ester compound has higher tenacity and keeps the transparency and the complete biodegradation. Furthermore, the polypropylene carbonic ester material has wider application space.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a completely biodegradable high-toughness polypropylene carbonate composition and a preparation method thereof. Background technique [0002] Polypropylene carbonate, also known as polypropylene carbonate, is a copolymer of carbon dioxide and propylene oxide. It is an environmentally friendly biodegradable material, which was first synthesized by Japanese scientist Inoue Xiangping (Inoue , S., Koinuma, H., Tsuruta, T., J.Polym.Sci., Polym.Lett.Ed., 1969, 7, 287-292.), and first realized industrialization in my country. Polypropylene carbonate materials have broad application prospects in packaging materials, fibers and nonwovens, and medical and health fields due to their carbon dioxide fixation and biodegradable properties. [0003] Although polypropylene carbonate has the above advantages, compared with general-purpose plastics, polypropylene carbonate has the chara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08K5/092
Inventor 张会良方建勇刘南安冉祥海韩常玉边俊甲庄宇刚董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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