CN106750199A - A kind of method for producing PLA - Google Patents
A kind of method for producing PLA Download PDFInfo
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- CN106750199A CN106750199A CN201510822509.9A CN201510822509A CN106750199A CN 106750199 A CN106750199 A CN 106750199A CN 201510822509 A CN201510822509 A CN 201510822509A CN 106750199 A CN106750199 A CN 106750199A
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Abstract
A kind of method for producing PLA, is related to the production technical field of high score polymer, and raw material of the present invention is natural, and production process environmental protection, every 3 tons of corns can produce 1 ton of PLA.The biodegradable plastic that the PLA being made of the present invention is produced and processed, can comprehensively replace presently used traditional petrochemical industry plastics, can be widely applied to the raw material that tableware, operation suture thread, packaging material etc. need to degrade.To increasing substantially the consumption of urban environmental protection level, reduction to irreplaceable petroleum resources, key effect will be played.
Description
Technical field
The present invention relates to the production technical field of high score polymer.
Background technology
PLA, abbreviation PLA, fusing point：175~185 DEG C, intrinsic viscosity IV (dl/g) scope：0.2~8, glass transition temperature：60~65 DEG C, heat transfer coefficient：0.025 λ(w/m.k).
PLA has many applications, can be in multi-field applications such as extrusion, injection, membrane, spinning.In the market application of the injection of PLA, relatively broad is modified resin.Its application in terms of injection is have impact on although pure PLA has the advantages that the high grade of transparency, high gloss, the shortcomings of its hard and crisp, difficulty of processing is big and thermo-labile.Certainly, chemistry, plastics industry circle are all endeavoured to solve these problems always.For example, the impact strength of PLA can be improved using this additives of BPM-500；Adding a kind of a small amount of ethylenic copolymer of entitled Biomax Strong can improve the toughness of PLA；With some performances that another Biodegradable resin PHA blendings can improve PLA；In addition, the scientists of Japan then have developed a kind of heat-resisting PLA resin for adding paper pulp.The transparency is sacrificed by the modified polylactic acid article of some of the above mode, but but improves defect of the PLA at aspects such as heat resistance, pliability, impact resiliences, improve its processing complexity, therefore range of application is also expanded.In sea, positive injection grade resin pins mid-sales about 70% is polydactyl acid.
Corn is conventional grain, and people want to widen its purposes always.
The content of the invention
The object of the invention is exactly the method for proposing production PLA one of with corn as raw material.
The present invention with corn as raw material, through being converted into starch, glucose, lactic acid one by one, until PLA.
Raw material of the present invention is natural, and production process environmental protection, every 3 tons of corns can produce 1 ton of PLA.High income, low cost.
The biodegradable plastic that the PLA being made of the present invention is produced and processed, can comprehensively replace presently used traditional petrochemical industry plastics, can be widely applied to the raw material that tableware, operation suture thread, packaging material etc. need to degrade.To increasing substantially the consumption of urban environmental protection level, reduction to irreplaceable petroleum resources, key effect will be played.Meanwhile, the conversion competence for added value of grain can be greatly improved alleviate main maize area peasant sell grain hardly possible problem.According to expert introduction, human body aggregate is made by material of PLA, skeleton defect is repaired, depending on its degradation time can be according to the situation of patient's bone uptake, the purpose of new bone lengthening is induced so as to reach.
Specific embodiment
1st, after the shell class crop such as corn is pulverized, starch is therefrom extracted, then starch is made the glucose do not refined.Many high-tech have overcome the process for having subtracted and having pulverized, and directly extract raw material from substantial amounts of crops.
2nd, carry out glucose fermentation in the way of similar production beer or alcohol, and food is become like after glucose fermentation and is added for the lactic acid in human muscular tissue.
3rd, lactic acid monomer is transformed into osculant product with special concentration processing procedure --- diminishing lactic acid, i.e. lactide.
4th, lactide monomer is by after vacuum purification, then the action of open loop is completed with a kind of dissolving processing procedure for not using solvent, monomer is polymerized.
5th, due to the molecular weight and the difference of crystallinity of polymer, the change space of material property can be made very big, so because of the product of different application, PLA is done into different modifications.
Claims (1)
1. a kind of method for producing PLA, it is characterised in that with corn as raw material, through being converted into starch, glucose, lactic acid one by one, until PLA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822509.9A CN106750199A (en) | 2015-11-24 | 2015-11-24 | A kind of method for producing PLA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822509.9A CN106750199A (en) | 2015-11-24 | 2015-11-24 | A kind of method for producing PLA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106750199A true CN106750199A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510822509.9A Pending CN106750199A (en) | 2015-11-24 | 2015-11-24 | A kind of method for producing PLA |
Country Status (1)
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| CN (1) | CN106750199A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138818A (en) * | 2020-01-09 | 2020-05-12 | 佛山市业辉服饰配件有限公司 | Degradable environment-friendly buckle and production process thereof |
| CN113896954A (en) * | 2021-11-11 | 2022-01-07 | 铜陵方正塑业科技有限公司 | Biodegradable film with lactic acid bacteria and polyesters as main materials and manufacturing method thereof |
| CN114790280A (en) * | 2022-04-20 | 2022-07-26 | 深圳力越新材料有限公司 | Production process of degradable PLA material |
-
2015
- 2015-11-24 CN CN201510822509.9A patent/CN106750199A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138818A (en) * | 2020-01-09 | 2020-05-12 | 佛山市业辉服饰配件有限公司 | Degradable environment-friendly buckle and production process thereof |
| CN113896954A (en) * | 2021-11-11 | 2022-01-07 | 铜陵方正塑业科技有限公司 | Biodegradable film with lactic acid bacteria and polyesters as main materials and manufacturing method thereof |
| CN114790280A (en) * | 2022-04-20 | 2022-07-26 | 深圳力越新材料有限公司 | Production process of degradable PLA material |
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Application publication date: 20170531 |