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Polybutylene succinate composite material and preparation method thereof

A technology of polybutylene succinate and polybutylene succinate is applied in the field of biodegradable polymer materials to achieve the effects of improving mechanical properties, excellent mechanical properties and simple process

Inactive Publication Date: 2018-06-29
HUBEI GUANGHE BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of stereocomplexed polylactic acid to reinforce polybutylene succinate and improve its mechanical properties has not been reported.

Method used

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  • Polybutylene succinate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 100 parts by weight of polybutylene succinate with a weight-average molecular weight of 50,000 and 3 parts by weight of poly-L-lactic acid with a weight-average molecular weight of 100,000 into an internal mixer, at 165 ° C, 80 rpm Mix for 10 minutes under the same conditions, then add 7 parts by weight of D-lactic acid with a weight average molecular weight of 100,000 and mix for 20 minutes under the same conditions, and cool to room temperature after blending, which is polybutylene succinate reinforced by stereocomplex polylactic acid. Glycol ester composites. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

Embodiment 2

[0026] 100 parts by weight of polybutylene succinate with a weight-average molecular weight of 50,000 and 14 parts by weight of poly-L-lactic acid with a weight-average molecular weight of 20,000 were added to the internal mixer at 165°C and 80 rpm. Mix for 15 minutes under the same conditions, then add 6 parts by weight of D-lactic acid with a weight average molecular weight of 20,000 under the same conditions and mix for 15 minutes. Glycol ester composites. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

Embodiment 3

[0028] Add 100 parts by weight of polybutylene succinate with a weight-average molecular weight of 50,000 and 24 parts by weight of poly-L-lactic acid with a weight-average molecular weight of 200,000 into an internal mixer at 165°C and 80 rpm. Mix for 12 minutes under the same conditions, then add 16 parts by weight of D-lactic acid with a weight average molecular weight of 50,000 and mix for 18 minutes under the same conditions, and cool to room temperature after blending, which is polybutylene succinate reinforced by stereocomplex polylactic acid. Glycol ester composites. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

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Abstract

The invention relates to a polybutylene succinate composite material and a preparation method thereof. The stereo-composite polylactic-acid reinforced polybutylene succinate composite material is prepared from the raw materials: 100 parts (by weight) of polybutylene succinate copolymer and 10-40 parts (by weight) of stereo-composite polylactic acid, wherein the stereo-composite polylactic acid isprepared from 30-70 parts (by weight) of polylevolactic acid and 30-70 parts (by weight) of polyparalactic acid. Through blending the stereo-composite polylactic acid and polybutylene succinate, the mechanical properties of pure polybutylene succinate resin are enhanced. According to the polybutylene succinate composite material and the preparation method thereof, the raw materials are readily available, and the process is simple; by adopting a two-step melting and blending method, the introduction of non-degradable materials such as a chain extender is avoided, and other non-degradable substances are not introduced while the mechanical properties of the pure polybutylene succinate resin are enhanced, so that the formed polybutylene succinate composite material has excellent biodegradability.

Description

technical field [0001] The invention belongs to the technical field of biodegradable polymer materials. The invention relates to a preparation method of stereocomplex polylactic acid reinforced polybutylene succinate composite material. Background technique [0002] Biodegradable polymer materials refer to excellent performance during use, and after use, they can be degraded, assimilated and produced small molecular substances under the action of natural microorganisms or enzymes, and finally decomposed into water and carbon dioxide that are harmless to the environment. of polymers. Polybutylene succinate (PBS) is obtained by polycondensation of 1,4-butanedioic acid and 1,4-butanediol. It has good bioabsorbability and biocompatibility, and is odorless and tasteless. Polybutylene succinate entered the research field of materials in the 1990s, and quickly became a research hotspot of biodegradable polymer materials. Compared with PHA, PLA, PCL and other biodegradable plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04
CPCC08L67/02C08L2205/02C08L67/04
Inventor 谢招旺韩常玉
Owner HUBEI GUANGHE BIO TECH
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