CN115368871A - Jatropha curcas seed protein adhesive and normal temperature preparation method thereof - Google Patents
Jatropha curcas seed protein adhesive and normal temperature preparation method thereof Download PDFInfo
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- CN115368871A CN115368871A CN202211115328.9A CN202211115328A CN115368871A CN 115368871 A CN115368871 A CN 115368871A CN 202211115328 A CN202211115328 A CN 202211115328A CN 115368871 A CN115368871 A CN 115368871A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H1/00—Macromolecular products derived from proteins
- C08H1/02—Protein-aldehyde condensates
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Abstract
The invention belongs to the technical field of adhesive preparation, and particularly relates to a jatropha curcas protein adhesive and a method for preparing the same at normal temperature; the jatropha curcas protein-based adhesive meeting the requirements of glue for a class II plywood in the national standard GB/T9846-2015 is prepared by taking jatropha curcas cake residues which can be residues in biodiesel production and processing as raw materials and adopting a special oxidation treatment mode, which is different from the existing protein glue treatment method, under the condition of not adding a cross-linking agent and a curing agent and under normal temperature conditions.
Description
Technical Field
The invention belongs to the technical field of adhesive preparation, and particularly relates to a jatropha curcas protein adhesive and a method for preparing the same at normal temperature.
Background
The jatropha curcas, also called jatropha curcas, is the euphorbiaceae, jatropha, the most promising tree species that has been recognized so far and can replace fossil energy, the seed kernel oil content of the jatropha curcas can reach more than 40%, and the jatropha curcas can be used for extracting biodiesel with excellent performance. The jatropha curcas cake after oil pressing is a main byproduct in the preparation of biomass diesel, and the main components of the jatropha curcas cake are protein carbohydrate, fiber, ash, grease and the like. The protein content can reach about 35 percent, and the protein is a high-quality protein raw material. However, because of the toxic protein contained in the medicine, the poisoning symptoms such as nausea, vomit, abdominal pain, diarrhea, dyspnea and the like are caused by poisoning after eating by mistake, and even the serious patient is suffocated to die. And thus cannot be directly used as a food or feed protein material. How to effectively utilize the Jatropha curcas cake meal powder is a problem which must be faced and needs to be solved urgently. The preparation of the wood adhesive by taking the wood adhesive as a raw material is one of effective ways for solving the problem and is also an effective method for realizing high-value utilization of Jatropha curcas cake meal waste.
The wood adhesive is one of important raw materials for industrial production of wood, is an important core technology in the field, and directly influences and determines the performance of wood products (especially artificial boards). At present, the most used adhesives in the artificial board industry are formaldehyde-formaldehyde adhesives, namely urea-formaldehyde resin adhesive (UF), melamine-formaldehyde resin adhesive (MF) and phenol-formaldehyde resin (PF), but the adhesives all have the problem of formaldehyde release, so that environmental pollution is caused and harm is caused to human bodies. In addition, due to the rise of petroleum crisis and the price rise of petrochemical products, the preparation of adhesives from biomass materials has become a popular research direction and has been increasingly applied to industrialization. The preparation of the protein adhesive by taking the soybean cake meal as the raw material becomes a mainstream product in a plurality of biomass adhesives due to the advantages of raw material sources, price and the like.
The jatropha curcas cake meal powder contains similar components with the soybean cake meal powder, so the preparation of wood adhesive by using the jatropha curcas cake meal powder is feasible. In addition, soybean meal powder is mostly applied to the fields of food processing and the like, and the soybean meal powder serving as an adhesive can compete with human beings for food crops, has low economic and practical values and the like. The Jatropha curcas cake meal powder cannot be used for food processing due to toxic protein, and the Jatropha curcas protein-based adhesive prepared by taking the toxic protein powder as a raw material does not have the problem of grain competition with people. Unfortunately, few studies on the preparation of wood adhesives from jatropha curcas seed proteins are currently conducted, and only a few of the studies have been reported to be conducted by referring to the development experience of soy protein adhesives. However, due to the difference between the component ratio of the jatropha curcas cake meal powder and the soybean cake meal powder, the development method of the carried soybean protein-based adhesive has many defects, and the performance of the carried soybean protein-based adhesive is not satisfactory.
The patent document with the application number of CN201310391970.4 discloses a jatropha curcas cake adhesive and a preparation method thereof, wherein the adhesive is prepared from the following raw materials in parts by mass: 80 parts of jatropha curcas cake meal, 148-240 parts of water, 0-9.6 parts of modifier, 5.6-12 parts of alkali and 6-18 parts of cross-linking agent. Wherein, the modifier is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate, urea, sodium silicate, sodium borate and guanidine hydrochloride. The preparation method comprises the following steps: (1) Adding Jatropha curcas cake meal powder, water, a modifier and alkali into a reaction kettle, heating to 50 ℃, stirring for 1-3 hours, and cooling to obtain Jatropha curcas cake meal pre-hydrolyzed solution; (2) Before the adhesive is used, a cross-linking agent is added into the Jatropha curcas cake meal pre-decomposition liquid, and the mixture is mixed and stirred for 5 to 10 minutes at room temperature.
The patent document with the application number of CN201310155540.2 discloses a crosslinking modified jatropha curcas cake meal adhesive and a preparation method thereof, and the crosslinking modified jatropha curcas cake meal adhesive and the preparation method thereof, wherein the adhesive comprises the following raw materials in parts by weight: 80 parts of jatropha curcas cake meal, 187-320 parts of water, 5.6-12 parts of alkali, 1.6-3.2 parts of glycol, 5-20 drops of silicone oil and 6-18 parts of cross-linking agent. The preparation method comprises the following steps: adding Jatropha curcas seed cake powder, water and alkali into a reaction kettle, stirring for 5 minutes, adding ethylene glycol and silicone oil, heating to 90 ℃, keeping the temperature, stirring for 3 hours, cooling, adding a cross-linking agent before use, and uniformly mixing.
Although the above patent technologies have studied the formula, preparation method and the like of the adhesive prepared from jatropha curcas powder, the preparation process requires heating treatment, the preparation time is overall longer, and the obtained adhesive has unsatisfactory performance.
The document "protein-based adhesive crosslinking modification and mechanism research" (Wu Zhigang, doctor's paper, 2016.) studies the crosslinking modification and mechanism of the protein-based adhesive, wherein the research progress of the jatropha curcas protein-based adhesive is disclosed, the preliminary treatment process of the jatropha curcas protein-based adhesive is optimized, and alkali is used for modifying the jatropha curcas protein.
The effect of sodium hydroxide-urea, calcium hydroxide/sodium hydroxide and sodium bisulfate treatments on the performance of the Jatropha curcas protein-based adhesives was studied in the document "effect of 3 treatment modalities on Jatropha curcas protein-based adhesives" (Hao Haixia, wu Zhigang, lei Hong, xi Xuedong, du Guanben, proceedings of the university of southwestern forestry, 2016.), but the results were not ideal.
The slow light Wei is prepared by extracting Jatropha curcas protein with Jatropha curcas powder by alkali extraction-acid precipitation method or phosphoric acid buffer solution method, and performing mixed alkali treatment (Ca (OH) 2 NaOH), and compared with the soybean protein adhesive treated in the same way, the jatropha curcas powder adhesive has better hot water resistance than the soybean protein adhesive. However, the method has complex process and long operation time.
Disclosure of Invention
The invention provides a jatropha curcas protein adhesive and a method for preparing the same at normal temperature to solve the problems.
The method is realized by the following technical scheme:
1. a Jatropha curcas protein adhesive is prepared from the following raw materials: 32-48g of distilled water, 8-15g of jatropha curcas powder, 0.8-2.0g of oxidant and 0.2-0.5g of additive.
Furthermore, the particle size of the jatropha curcas powder is more than 200 meshes.
Further, the oxidant is any one of potassium permanganate, sodium periodate, hydrogen peroxide and sodium nitrate.
Further, the additive is one or more of PEG 400, SDBS and sodium stearate.
2. The preparation method of the jatropha curcas protein adhesive at normal temperature is prepared by treating jatropha curcas protein by an oxidation method, and specifically comprises the following steps:
under the condition of room temperature, adding distilled water into a beaker provided with a mechanical stirring rod, adding the jatropha curcas powder while stirring, adding an oxidant and an additive, and stirring for 10-30min to obtain the jatropha curcas protein adhesive.
3. The Jatropha curcas protein adhesive can be applied to the manufacture of plywood, and has the performance indexes that: the dry shear strength is more than 1.2MPa, the wet strength after 24 hours of cold water soaking is more than 0.75MPa, the wet strength after 3 hours of water soaking at 63 +/-3 ℃ is more than 0.8MPa and is more than the standard that the national standard is more than or equal to 0.70MPa, and the samples have no adhesive failure.
In conclusion, the invention has the beneficial effects that: the invention takes Jatropha curcas cake dregs which are the residues of biodiesel production and processing as raw materials, adopts a special oxidation treatment mode, is different from the existing protein glue treatment method, and the general alkali treatment method is only to hydrolyze protein under the action of alkali to expose more active functional groups and cut off protein macromolecular chains, but also leads to the need of adding more cross-linking agents in the later period to ensure the performance of the protein glue. In the technical scheme, an oxidation treatment method is adopted to oxidize soluble/non-soluble carbohydrates in the Jatropha curcas cake meal to form aldehyde substances, and the aldehyde substances are crosslinked with protein molecules in the cake meal, so that the bonding effect can be realized without adding a crosslinking agent. In the existing alkali treatment process, the temperature needs to be raised to 80-100 ℃, and the temperature is kept for tens of minutes or several hours; in the technical scheme, the oxidation treatment is only carried out under the normal temperature condition without heating, the treatment time is only dozens of minutes, and the method has the advantages of energy conservation and high efficiency relatively. The jatropha curcas protein-based adhesive meeting the adhesive requirements of II-type veneers in the national standard GB/T9846-2015 is prepared by reacting under the condition of normal temperature without adding a cross-linking agent and a curing agent.
The raw material selected by the invention is the waste, namely jatropha curcas cake meal, which is generated in the process of refining the biodiesel, and the jatropha curcas cake meal cannot be used as a food/feed raw material because the jatropha curcas cake meal contains toxic protein, but is not influenced when being used as an adhesive raw material, and the toxic protein has insect prevention and bacteria prevention effects. Compared with the soybean protein adhesive which is reported by a great amount of research at present and takes the soybean cake meal as the raw material, the soybean protein adhesive has great advantages. The reason is that the soybean cake meal can be used as a high-quality protein food source for people/livestock, and the soybean cake meal serving as an adhesive raw material has the problem of food competition with people.
The invention has the following specific advantages:
1. the preparation process is simple. The glue is prepared only by mechanically stirring under the condition of normal temperature, so that the energy consumption caused by heating in the production process is greatly reduced, the energy is saved, the environment is protected, and the production cost is reduced.
2. Is green and environment-friendly. The main raw material of the adhesive is derived from a byproduct of biomass diesel oil production, namely Jatropha curcas cake meal.
3. The price is low. The Jatropha curcas protein-based adhesive prepared by the invention does not need to add a crosslinking modifier, so that the production cost is greatly reduced.
4. As a biomass adhesive, the adhesive meets the requirements of green ecological civilized construction and the growing environmental awareness and consumption of people, is favorable for reducing the dependence degree of the wood industry on synthetic resin based on petrochemical resources, provides a green environment-friendly adhesive for the production of plywood, and has important significance for the development of the wood industry and the coping with the petrochemical crisis problem.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
1. A Jatropha curcas protein adhesive is prepared from the following raw materials: 40g of distilled water, 10g of jatropha curcas powder, 0.9g of potassium permanganate and 0.4g of PEG.
Furthermore, the particle size of the jatropha curcas powder is more than 200 meshes.
2. The preparation method of the jatropha curcas protein adhesive at normal temperature is prepared by treating jatropha curcas protein by an oxidation method, and specifically comprises the following steps:
under the condition of room temperature, adding distilled water into a beaker provided with a mechanical stirring rod, adding the jatropha curcas powder while stirring, adding an oxidant and an additive, and stirring for 20min to obtain the jatropha curcas protein adhesive.
Example 2
1. A Jatropha curcas protein adhesive is prepared from the following raw materials: 32g of distilled water, 8g of jatropha curcas powder, 0.8g of hydrogen peroxide and 0.2g of SDBS.
Furthermore, the particle size of the jatropha curcas powder is more than 200 meshes.
2. The preparation method of the jatropha curcas protein adhesive at normal temperature is prepared by treating jatropha curcas protein by an oxidation method, and specifically comprises the following steps:
under the condition of room temperature, adding distilled water into a beaker provided with a mechanical stirring rod, adding the jatropha curcas powder while stirring, adding an oxidant and an additive, and stirring for 10min to obtain the jatropha curcas protein adhesive.
Example 3
1. A Jatropha curcas protein adhesive is prepared from the following raw materials: 48g of distilled water, 15g of jatropha curcas powder, 2.0g of sodium nitrate and 0.5g of sodium stearate.
Furthermore, the particle size of the jatropha curcas powder is more than 200 meshes.
2. The preparation method of the jatropha curcas protein adhesive at normal temperature is prepared by treating jatropha curcas protein by an oxidation method, and specifically comprises the following steps:
under the condition of room temperature, adding distilled water into a beaker provided with a mechanical stirring rod, adding the jatropha curcas powder while stirring, adding an oxidant and an additive, and stirring for 30min to obtain the jatropha curcas protein adhesive.
Examples of the experiments
Under the condition of room temperature, potassium permanganate is used as an oxidant, distilled water, jatropha curcas cake meal and an additive are uniformly stirred to prepare a Jatropha curcas protein adhesive, 4 groups of Jatropha curcas protein adhesives are prepared under the condition of different addition amounts of the oxidant and the additive for producing three-layer plywood in a laboratory, the dry shear strength, the 24-hour cold water soaking wet strength and the 3-hour hot water (63 ℃) soaking wet strength are tested, the result is shown in Table 1, and the prepared board has the bonding performance meeting the requirement (more than or equal to 0.7 MPa) of the II-type board in the national standard GB/T9846-2015. Wherein the dry shear strength, the 24h cold water soaking wet strength and the 3h hot water (63 ℃) soaking wet strength of the optimal group of JP3 adhesives are respectively 1.94MPa, 0.88MPa and 0.86MPa.
TABLE 1 different KMNOs 4 The prepared jatropha curcas protein adhesive has bonding performance
Claims (7)
1. The jatropha curcas protein adhesive is characterized by being prepared from the following raw materials: 32-48g of distilled water, 8-15g of jatropha curcas powder, 0.8-2.0g of oxidant and 0.2-0.5g of additive.
2. The jatropha curcas protein adhesive according to claim 1, wherein the particle size of the jatropha curcas powder is more than 200 meshes.
3. The jatropha curcas protein adhesive according to claim 1, wherein the oxidant is any one of potassium permanganate, sodium periodate, hydrogen peroxide and sodium nitrate.
4. The Jatropha curcas protein adhesive of claim 1, wherein the additive is one or more of PEG 400, SDBS and sodium stearate.
5. The normal-temperature preparation method of the jatropha curcas protein adhesive according to claim 1, characterized in that the jatropha curcas protein adhesive is prepared by treating jatropha curcas protein by an oxidation method.
6. The normal-temperature preparation method of the jatropha curcas protein adhesive according to claim 5, characterized by comprising the following steps:
adding distilled water into a beaker with a mechanical stirring rod, adding the jatropha curcas powder while stirring, adding the oxidant and the additive, and stirring for 10-30min to obtain the jatropha curcas protein adhesive.
7. The method for preparing the jatropha curcas protein adhesive at normal temperature as claimed in any one of claims 5 or 6, wherein the preparation process is carried out at room temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211115328.9A CN115368871A (en) | 2022-09-14 | 2022-09-14 | Jatropha curcas seed protein adhesive and normal temperature preparation method thereof |
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| CN202211115328.9A CN115368871A (en) | 2022-09-14 | 2022-09-14 | Jatropha curcas seed protein adhesive and normal temperature preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952117A (en) * | 2013-04-29 | 2014-07-30 | 西南林业大学 | Crosslinking modified jatropha curcas cake meal adhesive and preparation method thereof |
| CN103952119A (en) * | 2013-09-02 | 2014-07-30 | 西南林业大学 | Jatropha curcas cake meal adhesive and preparation method thereof |
| US20180171194A1 (en) * | 2016-12-15 | 2018-06-21 | The United States Of America, As Represented By The Secretary Of Agriculture | Adhesive Compositions And Methods Of Adhering Articles Together |
| WO2022019790A1 (en) * | 2020-07-22 | 2022-01-27 | Sestec Polska Sp. Z O.O. | Binding agent for cellulose-containing materials and a product containing it |
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- 2022-09-14 CN CN202211115328.9A patent/CN115368871A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952117A (en) * | 2013-04-29 | 2014-07-30 | 西南林业大学 | Crosslinking modified jatropha curcas cake meal adhesive and preparation method thereof |
| CN103952119A (en) * | 2013-09-02 | 2014-07-30 | 西南林业大学 | Jatropha curcas cake meal adhesive and preparation method thereof |
| US20180171194A1 (en) * | 2016-12-15 | 2018-06-21 | The United States Of America, As Represented By The Secretary Of Agriculture | Adhesive Compositions And Methods Of Adhering Articles Together |
| WO2022019790A1 (en) * | 2020-07-22 | 2022-01-27 | Sestec Polska Sp. Z O.O. | Binding agent for cellulose-containing materials and a product containing it |
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