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Poly-3-hydroxybutyrate composite material and preparation method thereof

A technology of hydroxybutyrate and composite materials, which is applied in the field of biodegradable polymer materials, can solve the problems of extremely high requirements and environmental pollution, achieve excellent mechanical properties, simple process, and improve the effects of mechanical properties and rheological behavior

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

AI Technical Summary

Benefits of technology

This patented new type of polymeric compound called PLLC can be easily obtained from plants or animals through melting processes that create it with specific chemical structures. These molecules improve its strength and durability over time by making them more resistant against deformation caused by external forces like pressure.

Problems solved by technology

This patents describes various methods for modifying poly(3-Hydroxyvaleral Acid)-Polyganese Tape®(PTY). One problem addressed in this patented technical solution involves finding ways to improve their flexibility while maintaining strength over longer periods of time compared with existing commercial polymers due to limited chemical bonding capabilities. Another issue being solved is how to enhance both crystal form and fluid behavior during processing under conditions suitable for production purposes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 100 parts by weight of poly-3-hydroxybutyrate 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 the internal mixer, at 165 ° C, 80 rpm conditions Mix at low temperature for 10 minutes, and then add 7 parts by weight of poly-D-lactic acid with a weight average molecular weight of 100,000 under the same conditions and mix for 20 minutes. After blending, cool to room temperature to obtain a poly-3-hydroxybutyrate composite material. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

Embodiment 2

[0025] Add 100 parts by weight of poly-3-hydroxybutyrate 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 into an internal mixer at 165°C and 80 rpm. Mix at low temperature for 15 minutes, and then add 6 parts by weight of poly(D-lactic acid) with a weight average molecular weight of 20,000 under the same conditions and mix for 15 minutes. After blending, cool to room temperature to obtain a poly-3-hydroxybutyrate composite material. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

Embodiment 3

[0027] 100 parts by weight of poly-3-hydroxybutyrate 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 were added to an internal mixer at 165°C and 80 rpm. Mix at low temperature for 12 minutes, then add 16 parts by weight of poly(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 to obtain a poly-3-hydroxybutyrate composite material. The composite materials were tested by tensile mechanics, melt index and DSC. The results are shown in Table 1.

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PUM

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Abstract

The invention discloses a poly-3-hydroxybutyrate composite material and a preparation method thereof. The poly-3-hydroxybutyrate composite material is prepared from the raw materials in parts by weight: 100 parts of poly-3-hydroxybutyrate copolymer and 10-40 parts of stereo-composite polylactic acid, wherein the stereo-composite polylactic acid is prepared from 30-70 parts of polylevolactic acid and 30-70 parts of polyparalactic acid. Through blending the stereo-composite polylactic acid and poly-3-hydroxybutyrate, the mechanical properties of pure poly-3-hydroxybutyrate resin are enhanced. According to the poly-3-hydroxybutyrate 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 poly-3-hydroxybutyrate resin are enhanced, so that the formed poly-3-hydroxybutyrate composite material has excellent biodegradability.

Description

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Claims

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Application Information

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Owner HUBEI GUANGHE BIO TECH
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