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Method for producing polylactic acid and a highly conductive polymer, and apparatus for producing highly conductive polylactic acid polymer

A manufacturing method and technology of polylactic acid, which are applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical-chemical processes, etc., can solve problems such as increased production costs, decreased production costs, inability to obtain high concentrations of lactic acid, etc. The effect of optimizing frequency and output

Inactive Publication Date: 2012-10-03
POLY ENERGY
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  • Abstract
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Problems solved by technology

[0005] However, the problem with polylactic acid is that the pH of the reaction solution decreases during the fermentation of lactic acid, and the activity of lactic acid bacteria is often inhibited, so high-concentration lactic acid cannot be obtained.
However, the method has been inefficient due to the frequency or output not being suitable for the volume of the contents in it, leading to increased production costs, which has been a problem
[0008] However, studies on electron wave shielding materials produced by secondary processing of polylactic acid or materials used for various conductive parts, batteries, capacitors, etc. are still lacking

Method used

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  • Method for producing polylactic acid and a highly conductive polymer, and apparatus for producing highly conductive polylactic acid polymer
  • Method for producing polylactic acid and a highly conductive polymer, and apparatus for producing highly conductive polylactic acid polymer
  • Method for producing polylactic acid and a highly conductive polymer, and apparatus for producing highly conductive polylactic acid polymer

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preparation example Construction

[0073] figure 2 It is a process diagram describing the embodiment of the preparation method of polylactic acid of the present invention, such as figure 2 As shown, the method includes a gelatinization step (S10) of mixing vegetable starch with water and then heating to gelatinize the starch; adding lactic acid to the gelatinized starch and then heating to liquefy the starch The liquefaction process (S20); the saccharification process (S30) of degrading the liquefied starch into a monosaccharide solution by using glucoamylase; the fermentation process (S40) of subjecting the monosaccharide solution to lactic acid fermentation to produce a fermentation solution; an electrodialysis process (S50) of separating and concentrating lactate in a solution and then separating lactic acid from the lactate; a lactic acid purification process (S60) of heating the separated lactic acid to remove water and impurities; a lactide production process (S70) of mixing oxides to produce lactide; ...

Embodiment 1

[0178] According to step S1, 100 parts by weight of polylactic acid with an average molecular weight of 5000-10000, 5-10 parts by weight of polyglycolic acid and 10-20 parts by weight of lactide are put into a reaction vessel. Next, 0.1 to 10 parts by weight of ammonium vanadate as a catalyst and 0.1 to 10 parts by weight of vanadium oxide are added to the reaction vessel, followed by stirring. At this time, the heater is operated to heat the reaction vessel at a temperature of 160° C. to 190° C., and the pressure inside the reaction vessel is adjusted to 0.1 to 0.5 atmospheres using a suction pump.

[0179] According to step S2, put 5-10 parts by weight of serine and 0.1-1 part by weight of dodecanol into the reaction container, and supply nitrogen and electromagnetic waves to the reactants through the nitrogen / electromagnetic wave supply unit. Use a magnetron oscillator with a rated output of 3KW to emit electromagnetic waves to generate a frequency of 2.45GHz and an output ...

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Abstract

The present invention relates to a method for producing polylactic acid, and more particularly, to a method for producing polylactic acid, which can increase production yield and reduce costs, and which can more conveniently produce a high molecular weight polylactic acid according to the use thereof. Also, the present invention relates to a method for producing a highly conductive polylactic acid polymer, which is economical in terms of time and cost as a highly conductive polylactic acid can be efficiently produced, and to an apparatus for producing the highly conductive polylactic acid polymer. According to the present invention, the method for producing the highly conductive polylactic acid comprises: a step S1 of adding and mixing 100 parts by weight of polylactic acid, 10 to 20 parts by weight of lactide, and 5 to 10 parts by weight of polyglycolic acid in a reaction vessel; a step S2 of adding 5 to 10 parts by weight of serine and 0.1 to 1 part by weight of dodecyl alcohol into the reaction vessel, and then feeding inert gas therein and irradiating same with electromagnetic waves; and a step S3 of adding 0.1 to 1 part by weight of acetic acid selenium into the reaction vessel, and then mixing.

Description

technical field [0001] The present invention relates to the preparation method of polylactic acid and highly conductive polylactic acid polymer and equipment thereof, more specifically, the present invention relates to a kind of preparation method of polylactic acid, described method can improve the productive rate of polylactic acid, reduce polylactic acid manufacturing cost, and according to the use of polylactic acid to manufacture high molecular weight polylactic acid, the present invention also relates to the preparation method of highly conductive polylactic acid polymer, because can effectively manufacture highly conductive polylactic acid thus this method is relatively time and cost It is economical, and the present invention also relates to the preparation equipment of polylactic acid and polylactic acid polymer with high conductivity. Background technique [0002] Plastic materials have contributed to the rich life of modern people and industrial development due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/78C08G63/90C08L67/03B01J19/12
CPCC08G63/823B01J19/18B01J2219/00779B01J19/0066B01J2219/00094B01J4/002C08G63/08
Inventor 魏洵铭高村孝次
Owner POLY ENERGY
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