CN101311208B - Thermoplastic starch and method for preparing same - Google Patents
Thermoplastic starch and method for preparing same Download PDFInfo
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- CN101311208B CN101311208B CN2007100413199A CN200710041319A CN101311208B CN 101311208 B CN101311208 B CN 101311208B CN 2007100413199 A CN2007100413199 A CN 2007100413199A CN 200710041319 A CN200710041319 A CN 200710041319A CN 101311208 B CN101311208 B CN 101311208B
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- starch
- thermoplastic
- thermoplastic starch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention discloses a thermoplastic starch and a preparation method thereof. The preparation method comprises the following steps: starch, glycerin or sorbitol, rosin glyceride and stearic acid are mixed with water; the solution reacts under the supercritical or subcritical state of carbon dioxide in an extruder; the reactant is extruded and chopped to obtain the particles of the thermoplastic starch. The thermoplastic starch of the invention can produce blow molding film and T film and can also adopt other thermoplastic-phrase polymer to carry out dry-mix production to produce the film with multilayered structure. The thermoplastic starch is miscibility with other polymers and can be used by combining general thermoplastic polymers such as polylactic acid, polyethylene, polypropylene, various PO polymers, daiamid, polyurethane, and the like, which can be molded by blow molding, injection molding and vacuum mold pressing, and the like in plastic (PO) mechanical processing. Furthermore, the thermoplastic starch is edible.
Description
Technical field
The present invention relates to a kind of treated starch, relate in particular to a kind of thermoplastic starch and preparation method thereof.
Background technology
In existing polymkeric substance, the output maximum of starch, Fen, shallow lake is the polymkeric substance of kind of cheapness, the raw material of starch is corn and tapioca (flour) etc., is the physical environment resource.Be used as thickener in a large number in industrial aspect, but also in a large number as food raw material.
Starch is not dissolved in cold water, heating in water and gelatinization, but this and non-thermal plasticity.
Owing to the above-mentioned character of starch, limited the purposes of starch, make starch can't adopt methods such as blowing and injection moulding, preparation becomes film, or does mixed production with other thermoplastic polymer, with the film of production multilayered structure.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of thermoplastic starch, to overcome the defective of original starch, expand the purposes of starch.
The preparation method of the said thermoplastic starch of the present invention comprises the steps:
With starch, glycerine or Sorbitol Powder, rosin glyceride, hard ester acid and water, in forcing machine, under the overcritical or subcritical state of carbonic acid gas, react, extrude pelletizing then, obtain the particle of said thermoplastic starch, outward appearance is little yellow transparent grain shape, proportion is about 1.35～1.45, and the moisture content weight content is 2%;
Preferred temperature of reaction is 120～150 ℃, and pressure is 0.5～0.8MPa, and the residence time of reaction is 1～2 minute;
The parts by weight of reaction raw materials are as follows:
Starch 60-80 part, glycerine or Sorbitol Powder 20-30 part, rosin glyceride 3-15 part, 0～0.5 part of hard ester acid, 25～35 parts in water.
Said starch is selected from fat starch, etherification starch or cross-linking starch, and the weight content of moisture content is 10～13%, can adopt the commercially available prod, as the product of peak, Shanghai Fine Chemical Co., Ltd.
Thermoplastic's starch of the present invention can be produced blown film, the T film, and can also adopt other thermoplasticity gathering compound to do and mix production, can produce the film of multilayered structure.Thermoplastic starch has the Combination with other polymkeric substance, poly(lactic acid).Polyethylene, polypropylene, various PO base polymers and polymeric amide, the interchangeable heat thermoplastic polymer of urethane etc. mixes use, can be in the blowing of plastics (PO) mechanical workout, injection moulding, vacuum molding shaping etc., and have edibility.
Thermoplastic starch can be adjusted solvability for hot water by the density of change intending seemingly building bridge, and can be used as the food tackifier, because excellent in safety, can also be as the tackifier of makeup and toiletry.Can be as making form keep stable stablizer at normal temperatures, because of being easy in mouth, to decompose, so give the gelatin class etc. of sense of food, when temperature rises, gelatin is dissolving just, even but thermoplastic starch do not dissolve at normal temperatures yet, keeping comparatively excellent aspect the morphological stability.
Adopt 100% thermoplastic starch to be shaped as film, such as can modest valency producing the wafer substitute, can also be as the substitute of the edibility film of the goods of sausage Membrane cover.
Can adopt 100% thermoplastic starch to make molding such as adhesive tape, as the substitute of gelatin, the main raw material(s) of gelatin is manufacturings such as animal osteoderm after gelation, and easily the protein to BDE infects, and thermoplastic starch is not worried, can be used as cheap material fully.
Thermoplastic starch of the present invention; be the starch that makes the ether chain portion generation partially denaturing of grape ring; it is the few Fen, sex change shallow lake of side chain; its raw material is a starch; glycerine; water and a spot of edibility are paid raw material; edible; has edibility; thermoplastic starch presents vitreous state under 70-100 degree condition; but the general spendable processing temperature scope of melting point endothermic peak is the 120-180 degree; thermoplastic starch is particle or powdered; this particle, powder is through suitably heating; pressurization; will have the mobile thixotropy, the general extrusion machinery that the uses during industrial production of plastic prod; thermoplastic starch flows because of heating and pressurizing; be complementary with the effect of plastics industry extrusion machinery, have water tolerance simultaneously, even thermal treatment 10 minutes can swelling in boiling water yet; dissolving.Thermoplastic starch mixes mutually with other hydrophobic polymer, will show drainage, and thermoplastic starch can just can improve water tolerance greatly by strengthening the three-dimensional steel order structure of intending like building bridge, biological degradation easily, and eventual degradation is carbonic acid gas and water.
Embodiment
Embodiment 1
With fat starch, glycerine or Sorbitol Powder, rosin glyceride, hard ester acid and water, in forcing machine, under the supercritical state of carbonic acid gas, react, extrude pelletizing then, obtain the particle of said thermoplastic starch, outward appearance is little yellow transparent grain shape, proportion is 1.35, and the weight content of moisture content is 2%;
Temperature of reaction is 130 ℃, and pressure is 0.5MPa, and the residence time of reaction is 1 minute;
The parts by weight of reaction raw materials are as follows:
80 parts of fat starch, 20 parts of glycerine or Sorbitol Powders, 3 parts of rosin glycerides, 0 part of hard ester acid, 25 parts in water.
The weight content of said fat starch moisture content is 13%.
With the particle of the thermoplastic starch that obtained, adopt blow moiding method, the preparation film, thickness is 0.2mm, adopts the film detection method of GB-T2461-1999 standard code to detect, and can reach above-mentioned standard.
Embodiment 2
With etherification starch starch, glycerine or Sorbitol Powder, rosin glyceride, hard ester acid and water, in forcing machine, under the subcritical state of carbonic acid gas, react, extrude pelletizing then, obtain the particle of said thermoplastic starch, outward appearance is little yellow transparent grain shape, proportion is 1.35, and the moisture content weight content is 2%;
Temperature of reaction is 145 ℃, and pressure is 0.8MPa, and the residence time of reaction is 2 minutes;
The parts by weight of reaction raw materials are as follows:
60 parts of starch, 30 parts of glycerine, 15 parts of rosin glycerides, 0.5 part of hard ester acid, 35 parts in water.
The weight content of the moisture content of said etherification starch is 10%.
With the particle of the thermoplastic starch that obtained, adopt blow moiding method, the preparation film, thickness is 0.2mm, adopts the film detection method of GB-T2461-1999 standard code to detect, and can reach above-mentioned standard.
Claims (5)
1. the preparation method of a thermoplastic starch is characterized in that, comprises the steps:
With starch, glycerine or Sorbitol Powder, rosin glyceride, hard ester acid and water, in forcing machine, under the subcritical state of carbonic acid gas, react, extrude pelletizing then, obtain the particle of said thermoplastic starch.
2. method according to claim 1 is characterized in that, temperature of reaction is 130～150 ℃, and pressure is 0.3～0.8MPa, and the residence time of reaction is 1～2 minute.
3. method according to claim 1 is characterized in that, the parts by weight of reaction raw materials are as follows: starch 60-80 part, glycerine or Sorbitol Powder 20-30 part, rosin glyceride 3-15 part, 0～0.5 part of hard ester acid, 25～35 parts in water.
4. method according to claim 1 is characterized in that said starch is selected from fat starch, etherification starch or cross-linking starch, and the weight content of moisture content is 10～13%.
5. adopt thermoplastic's starch of each described method preparation of claim 1～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100413199A CN101311208B (en) | 2007-05-25 | 2007-05-25 | Thermoplastic starch and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100413199A CN101311208B (en) | 2007-05-25 | 2007-05-25 | Thermoplastic starch and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101311208A CN101311208A (en) | 2008-11-26 |
| CN101311208B true CN101311208B (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100413199A Expired - Fee Related CN101311208B (en) | 2007-05-25 | 2007-05-25 | Thermoplastic starch and method for preparing same |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803816B (en) * | 2009-02-17 | 2011-10-26 | 广州德渊精细化工有限公司 | Decomposable and renewable shoe reinforcement material |
| CN102417614A (en) * | 2011-08-16 | 2012-04-18 | 河南省南街村（集团）有限公司 | Method for preparing fully-degradable starch plastic master batch |
| FR2992652B1 (en) | 2012-06-27 | 2014-06-20 | Arkema France | USE OF A THERMOPLASTIC STARCH ALLOY AND TPE FOR THE MANUFACTURE OF A ULTRA-FINE IMPER-BREATHABLE ADHESIVE FILM. |
| CN104277248A (en) * | 2013-07-04 | 2015-01-14 | 南京林业大学 | Starch plastic water resistance improving method |
| CN109206668B (en) * | 2018-05-18 | 2021-12-31 | 上海耐特复合材料制品有限公司 | Method for preparing thermoplastic starch biodegradable material by supercritical fluid and product |
| CN110372802B (en) * | 2019-09-03 | 2021-06-04 | 集美大学 | Citrate starch and preparation method thereof |
| CN111218048A (en) * | 2020-01-17 | 2020-06-02 | 浙江欧力雅生物科技有限公司 | Preparation method of bio-based degradable environment-friendly bag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227568A (en) * | 1996-08-09 | 1999-09-01 | 生物技术生物学自然包装有限公司 | Thermoplastic processable starch or starch derivative polymer mixture |
| CN1434071A (en) * | 2003-03-04 | 2003-08-06 | 成都新柯力化工科技有限公司 | Total biodegraded thermoplastic starch resin |
-
2007
- 2007-05-25 CN CN2007100413199A patent/CN101311208B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227568A (en) * | 1996-08-09 | 1999-09-01 | 生物技术生物学自然包装有限公司 | Thermoplastic processable starch or starch derivative polymer mixture |
| CN1434071A (en) * | 2003-03-04 | 2003-08-06 | 成都新柯力化工科技有限公司 | Total biodegraded thermoplastic starch resin |
Non-Patent Citations (2)
| Title |
|---|
| 白福臣等."淀粉基降解塑料的研究进展".《现代塑料加工应用》.2000,第12卷(第5期),54-56. |
| 胡爱琳等."全淀粉降解塑料的研究进展".《精细化工》.2004,第21卷(第10期),759-762. |
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| CN101311208A (en) | 2008-11-26 |
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