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Toughened polylactic acid plastic and preparation method thereof

A technology of polylactic acid and toughening type, applied in the field of toughened polylactic acid plastics and its preparation, to achieve the effects of improving crystallinity, good nucleation induction, and good structural regularity

Active Publication Date: 2021-09-17
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has not yet been seen that the use of a toughening agent can achieve both toughening and nucleating effects.

Method used

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  • Toughened polylactic acid plastic and preparation method thereof
  • Toughened polylactic acid plastic and preparation method thereof
  • Toughened polylactic acid plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The present embodiment adopts raw materials and consumption as shown in Table 1, specifically:

[0075] The raw materials of the toughened polylactic acid plastics, in terms of percentage content, include: 85% of Plaque L130 L-polylactic acid (PLLA), 14.7% of polyamide thermoplastic elastomer (PAE) and 0.3% of antioxidant 1098;

[0076] Among them, the optical rotation of PLLA L130 L-polylactic acid (PLLA) is greater than 99%, Mw=155.0kg / mol, Mn=96kg / mol, PDI=1.62;

[0077] Polyamide thermoplastic elastomer (PAE) is a PA1012-PTMO copolymer composed of PA1012 hard segments and PTMO soft segments alternately. Elastomers with different modulus and strength can be prepared by the relative content of polyamide hard segments and polyether soft segments. For the specific preparation method, refer to the technical solution disclosed in the patent application 201610069156.4. The relative content of the PA1012 hard segment of the PAE elastomer (W PA ) is 25%.

[0078] The prepa...

Embodiment 2

[0083] The present embodiment adopts raw materials and consumption as shown in Table 1, specifically:

[0084] The raw materials of the toughened polylactic acid plastics, in percentage terms, include: 90% of Plaque L130 L-polylactic acid (PLLA), 9.7% of polyamide thermoplastic elastomer (PAE) and 0.3% of antioxidant 1098;

[0085] Among them, the optical rotation of PLLA L130 L-polylactic acid (PLLA) is greater than 99%, Mw=155.0kg / mol, Mn=96kg / mol, and PDI=1.62.

[0086]Polyamide thermoplastic elastomer (PAE) is PA1012-PTMO copolymer composed of PA1012 hard segment and PTMO soft segment alternately. Elastomers with different modulus and strength can be prepared by the relative content of polyamide hard segment and polyether soft segment. For the specific preparation method, refer to the technical solution disclosed in the patent application 201610069156.4. The relative content of PA1012 hard segment of PAE elastomer (W PA ) is 25%.

[0087] The preparation method of this ...

Embodiment 3

[0089] The present embodiment adopts raw materials and consumption as shown in Table 1, specifically:

[0090] The raw materials of the toughened polylactic acid plastics, in terms of percentage content, include: Plaque L130 L-polylactic acid (PLLA) 92.5%, polyamide thermoplastic elastomer (PAE) 7.2% and antioxidant 1098 0.3%;

[0091] Among them, the optical rotation of PLLA L130 L-polylactic acid (PLLA) is greater than 99%, Mw=155.0kg / mol, Mn=96kg / mol, and PDI=1.62.

[0092] Polyamide thermoplastic elastomer (PAE) is PA1012-PTMO copolymer composed of PA1012 hard segment and PTMO soft segment alternately. Elastomers with different modulus and strength can be prepared by the relative content of polyamide hard segment and polyether soft segment. For the specific preparation method, refer to the technical solution disclosed in the patent application 201610069156.4. The relative content of PA1012 hard segment of PAE elastomer (W PA ) is 25%.

[0093] The preparation method of ...

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Abstract

The invention discloses a toughened polylactic acid plastic and a preparation method thereof. The toughened polylactic acid plastic comprises polylactic acid resin, a polyamide thermoplastic elastomer and a processing aid. The polyamide thermoplastic elastomer phase is dispersed in the polylactic resin matrix phase in an island shape. The preparation method of the toughened polylactic acid plastic comprises the following steps: selecting the polylactic acid resin, the polyamide thermoplastic elastomer and the processing aid in proportion, uniformly stirring to obtain a mixed material, and extruding and granulating the mixed material to obtain the toughened polylactic acid plastic. The crystallization temperature of the used polyamide thermoplastic elastomer is higher than that of the polylactic acid, so that a good nucleation induction effect is achieved, and the aims of toughening the polylactic acid and improving the crystallinity of the polylactic acid are fulfilled.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a toughened polylactic acid plastic and a preparation method thereof. Background technique [0002] The use of plastic products is becoming more and more extensive, but at the same time, the plastic wastes are also increasing, and the adverse impact on the environment is becoming more and more serious. Traditional plastic waste is mainly treated by recycling, burial, incineration and other methods. These treatment methods have low efficiency, high energy consumption, and will produce toxic gases during incineration, which can cause secondary pollution. In recent years, the research and use of biodegradable plastics has become a hot field in academia and industry. Biodegradable plastics are a class of plastics that are degraded by the action of naturally occurring microorganisms such as bacteria, fungi or algae. It has excellent performance. After being dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L77/00C08K5/20
CPCC08L67/04C08L2205/24C08L77/00C08K5/20
Inventor 朱平董侠周臣旭王笃金
Owner INST OF CHEM CHINESE ACAD OF SCI
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