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Biodegradable material comprising polyhydroxy fotty acid ester blending polymer

A technology of degradable materials and blends, which is applied in the field of plastic products, can solve the problems of high production costs, and achieve the effects of lower production costs, lower melting points, and higher crystallization speeds

Inactive Publication Date: 2004-08-18
SHANTOU F T Z FREE TRADE ZONE LIANYI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the production cost of PHBHHx and PHBD is much higher than PHB and PHBV

Method used

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  • Biodegradable material comprising polyhydroxy fotty acid ester blending polymer
  • Biodegradable material comprising polyhydroxy fotty acid ester blending polymer
  • Biodegradable material comprising polyhydroxy fotty acid ester blending polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Blend of PHB + 3-hydroxybutyric acid and 3-hydroxyvaleric acid copolymer (PHBV)

[0041] PHB and PHBV were synthesized by the methods reported in "Chen et al. Biotechnol. Techniques, 1997, 11: 347" and "Chen et al. Antonie van Leewenhoek, 1991, 60: 61", respectively. Weigh 20 grams of powdered PHB and 20 grams of PHBV with 20% 3-hydroxyvaleric acid content, referred to as P(HB-20%HV), and mix thoroughly. The granulation is carried out by a small twin-screw extruder. See Table 1 for the performance comparison of blend PHB+P (HB-20%HV) with homopolymer PHB and copolymer.

[0042] sample

Embodiment 2

[0044] Blend of PHB + 3-hydroxybutyric acid and 3-hydroxyhexanoic acid copolymer (PHBHHx)

[0045] PHB and PHBHHx were synthesized by the methods reported in "Chen et al. Biotechnol. Techniques, 1997, 11:347" and "Chen GQ et al. Appl. Microbiol. Biotechnol., 2001, 57:50", respectively. Weigh 20 grams of powdered PHB and 10 grams of PHBHHx with a 3-hydroxyhexanoic acid content of 15%, referred to as P(HB-15%HHx), and mix thoroughly. The granulation is carried out by a small twin-screw extruder. See Table 2 for the performance comparison of blend PHB+P (HB-15%HHx) with homopolymer PHB and copolymer PHBHHx.

[0046] sample

Embodiment 3

[0048] Blend of PHB+3-Hydroxybutyric Acid and 3-Hydroxydecanoic Acid Copolymer (PHBD)

[0049] PHB and PHBD were synthesized by the methods reported in "Chen et al. Biotechnol. Techniques, 1997, 11: 347" and "Abe et al. Int. J. Biol. Macromol, 1994, 16: 115", respectively. Weigh 20 grams of powdered PHB and 10 grams of PHBD with 8% 3-hydroxydecanoic acid content, referred to as P(HB-8%HD), and mix thoroughly. The granulation is carried out by a small twin-screw extruder. See Table 3 for the performance comparison of blend PHB+P (HB-8%HD) with homopolymer PHB and copolymer PHBD.

[0050] sample

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Abstract

One new kind of biodegradable material with low cost and high machining performance is mixture containing including 3-hydroxy butyrate homopolymer and copolymer of 3-hydroxy butyric acid and non-HB structure hydroxy fatty acid in the weight ratio of 1 / 9 to 9. The copolymer contains at least two random structural units I and II, with the structural unit I accounting for the molar ratio of 10-95 %. The plastic products made of the biodegradable material are also provided.

Description

technical field [0001] The present invention relates to biodegradable materials, in particular to poly-3-hydroxybutyrate (Poly-3-hydroxybutyrate, hereinafter abbreviated as PHB) and other polyhydroxyalkanoates (hereinafter abbreviated as PHA) blends The resulting biodegradable polymer blends and plastic products made from such materials. Background technique [0002] High molecular weight polymers can be used to make a variety of plastic products, including films, sheets, fibers, foams, molded products, adhesives and many other specialty products. For applications in packaging, agriculture, household goods and personal care products, polymers have very short cycle times (less than 12 months). For example, in food packaging, polymers act as a protective medium and are discarded as soon as the contents are used up. Household products such as detergent bottles and diapers are also thrown away immediately after use. [0003] Most of these plastic substances end up in solid wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04
Inventor 赵锴张宜平陈国强
Owner SHANTOU F T Z FREE TRADE ZONE LIANYI BIOTECH
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