AU2021102582A4 - Method for synthesizing adhesive - Google Patents
Method for synthesizing adhesive Download PDFInfo
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- AU2021102582A4 AU2021102582A4 AU2021102582A AU2021102582A AU2021102582A4 AU 2021102582 A4 AU2021102582 A4 AU 2021102582A4 AU 2021102582 A AU2021102582 A AU 2021102582A AU 2021102582 A AU2021102582 A AU 2021102582A AU 2021102582 A4 AU2021102582 A4 AU 2021102582A4
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- Prior art keywords
- starch
- adhesive
- solution
- weighing
- reaction mixture
- Prior art date
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- 230000001070 adhesive effect Effects 0.000 title claims abstract description 44
- 239000000853 adhesive Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 12
- 229920002472 Starch Polymers 0.000 claims abstract description 63
- 239000008107 starch Substances 0.000 claims abstract description 61
- 235000019698 starch Nutrition 0.000 claims abstract description 61
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000011541 reaction mixture Substances 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000178 monomer Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 9
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims abstract description 6
- 230000001678 irradiating effect Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 235000011837 pasties Nutrition 0.000 claims abstract description 6
- 150000002978 peroxides Chemical class 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 3
- 229920001592 potato starch Polymers 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 244000017020 Ipomoea batatas Species 0.000 claims description 2
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 2
- 240000003183 Manihot esculenta Species 0.000 claims description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 2
- 244000046146 Pueraria lobata Species 0.000 claims description 2
- 235000010575 Pueraria lobata Nutrition 0.000 claims description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 2
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims description 2
- 235000010265 sodium sulphite Nutrition 0.000 claims description 2
- FZGFBJMPSHGTRQ-UHFFFAOYSA-M trimethyl(2-prop-2-enoyloxyethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCOC(=O)C=C FZGFBJMPSHGTRQ-UHFFFAOYSA-M 0.000 claims description 2
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 230000004103 aerobic respiration Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229940100445 wheat starch Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- 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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/02—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to polysaccharides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
OF THE DISCLOSURE
The present disclosure relates to a method for synthesizing a degradable adhesive. The method
for synthesizing a degradable adhesive includes the following steps: step 1, placing and irradiating
starch in a radiation field under aerobic conditions, to obtain a peroxide-containing pre-irradiated
starch; step 2, based on 50%-200% of the mass of the pre-irradiated starch, weighing an allyl
containing monomer, mixing a part thereof with the above starch solution; step 3, heating to 51
59°C, and stirring for 30 min; step 4, based on 1%o of the amount of the starch, weighing and
dissolving a reducing agent in a small amount of deionized water; step 5, after dropping, keeping
stirring for 10 min; step 6, based on 2-4%o of the amount of the starch, weighing and dissolving a
terminator in a small amount of deionized water, adding a resulting terminator solution to the
reaction mixture in one portion; and step 7, neutralizing the reaction mixture to approximately pH 5
with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive. The method
is characterized by simple process, low cost, high biodegradability of the adhesive obtained finally,
and no secondary environmental pollution.
Description
[01] The present disclosure relates to the technical field of natural organic polymer adhesives, and in particular to a method for synthesizing an adhesive.
[02] Adhesive, as an organic polymer, has increasingly been used widely in the fields of packaging, printing, construction engineering, textile printing and dyeing, shoemaking, and biomedicine, and has become an essential material in modern industry and national defense industry. With the rapid economic development of China, adhesives are playing more and more important roles in promoting different industries to simplify processing, saving energy, reducing costs, and improving economic performance; however, hazardous substances in the adhesives, such as volatile organic compounds, toxic curing agents, plasticizers, diluents, and other additives and harmful fillers, create new pollution and safety problems to the environment. At present, green environmental protection, resource conservation, and sustainable development are increasingly concerned all around the world, and in China, green economy is even regarded as the main development trend in the future. In view of this, adhesives widely used in packaging materials are bound to face higher environmental protection requirements. Facing increasingly stringent environmental protection requirements in the market, all adhesive manufacturers are actively looking for a way to develop, and thus degradable adhesives are becoming very popular. Active research and development of degradable energy-saving adhesives, as well as vigorous research and development of critical materials and high-performance and high-quality additives of the degradable adhesives, will become the inevitable course for the development of adhesives.
[03] An objective of the present disclosure is to provide a method for synthesizing an adhesive; the method features simple process, less investment, and low cost, and can obtain an excellent adhesive effect.
[04] To achieve the above objective, the technical solution adopted by the present disclosure is: a method for synthesizing an adhesive, including the following steps:
[05] step 1, placing starch in a radiation field, and degrading the starch by irradiating at an irradiation dose of 2-100 kGy under aerobic conditions, to obtain a peroxide-containing pre irradiated starch;
[06] step 2, mixing the foregoing starch with a 0.25 mol/L acid solution in a mass ratio of 1:4 for -50 min;
[07] step 3, based on 50%-200% of the mass of the pre-irradiated starch, weighing an allyl containing monomer, mixing a part thereof with the above starch solution, heating to 51-59°C, and stirring for 30 min;
[08] step 4, based on 1%o of the amount of the starch, weighing and dissolving a reducing agent in a small amount of deionized water;
[09] step 5, dropping the remaining monomer and the reducing agent into the starch solution in step 3 simultaneously, where the dropping lasts for 1-2.5 h, and a reaction mixture is controlled at a temperature not exceeding 65°C;
[10] step 6, after dropping, keeping stirring for 10 min; and
[11] step 7, based on 2-4%o of the amount of the starch, weighing and dissolving a terminator in a small amount of deionized water, adding a resulting terminator solution to the reaction mixture in one portion, stirring for 10-20 min to terminate the reaction, and neutralizing the reaction mixture to approximately pH 5 with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive.
[12] Preferably, the starch in step 1 may be any one from the group consisting of wheat starch, potato starch, cassava starch, kudzu starch, and sweet potato starch; the radiation field may be any one of y-ray, X-ray, and electron beam; acrylate in step 3 may be any one from the group consisting of butyl methacrylate, methacryloyloxyethyl trimethyl ammonium chloride, and acryloyloxyethyl trimethyl ammonium chloride; the reducing agent may be a redox system composed of ammonium persulfate and sodium sulfite.
[13] A natural organic polymer adhesive of the present disclosure may be applicable to the fields of packaging, printing, construction engineering, textile printing and dyeing, shoemaking, and biomedicine.
[14] The disclosure has the following beneficial effects: natural polymers are physically modified by a radiation method; the method is characterized by simple process, less investment, low cost, high biodegradability of the adhesive obtained finally, proneness to biodegradation, and no secondary environmental pollution.
[15] The present disclosure will be further described in conjunction with specific examples. It should be understood that these examples are only intended to illustrate the present disclosure and not to limit the scope of the present disclosure. Furthermore, it should be appreciated that those skilled in the art may alter or modify the efforts of the present disclosure after reading the teachings of the present disclosure, and these equivalent forms also fall within the scope as defined by the appended claims of the present application.
[16] Example 1:
[17] A method for synthesizing an adhesive included the following steps:
[18] step 1, starch (wheat starch, viscosity 42 mp-s, moisture content 1 4 .09wt%) was placed in a y- 6 Co radiation field, and degraded by irradiating at an irradiation dose of 30 kGy under aerobic conditions (for example, in the presence of air), to obtain a peroxide-containing pre-irradiated starch;
[19] step 2, the foregoing starch was mixed with a 0.25 mol/L acid solution in a mass ratio of 1:4 for 40-50 min;
[20] step 3, based on 80% of the mass of the pre-irradiated starch, an allyl-containing monomer was weighed; a part thereof was mixed with the above starch solution, heated to 51-59°C, and stirred for 30 min;
[21] step 4, based on 1%o of the amount of the starch, a reducing agent was weighed and dissolved in a small amount of deionized water;
[22] step 5, the remaining monomer and the reducing agent were dropped into the starch solution in step 3 simultaneously, where dropping time was 1-2.5 h, and a reaction mixture was controlled at a temperature not exceeding 65°C;
[23] step 6, after dropping, stirring continued for 10 min; and
[24] step 7, based on 4%o of the amount of the starch, a terminator was weighed and dissolved in a small amount of deionized water, a resulting terminator solution was added to the reaction mixture in one portion and stirred for 10-20 min to terminate the reaction, and the reaction mixture was neutralized to approximately pH 5 with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive.
[25] The resulting starch adhesive had excellent adhesive effects on paper products, plastic products, and wood products; in addition, biodegradability evaluation of the adhesive by the aerobic respiration parameter method concluded that the five-day biochemical oxygen demand (BOD5)/chemical oxygen demand (CODCr) ratio of the starch adhesive was 0.42, with better biodegradability.
[26] Example 2:
[27] A method for synthesizing an adhesive included the following steps:
[28] step 1, starch (potato starch, viscosity 49 mp-s, moisture content 13.51wt%) was placed in a y-6 Co radiation field, and degraded by irradiating at an irradiation dose of 50 kGy under aerobic conditions (for example, in the presence of air), to obtain a peroxide-containing pre-irradiated starch;
[29] step 2, the foregoing starch was mixed with a 0.25 mol/L acid solution in a mass ratio of 1:4 for 40-50 min;
[30] step 3, based on 100% of the mass of the pre-irradiated starch, an allyl-containing monomer was weighed; a part thereof was mixed with the above starch solution, heated to 51-59°C, and stirred for 30 min;
[31] step 4, based on 1%o of the amount of the starch, a reducing agent was weighed and dissolved in a small amount of deionized water;
[32] step 5, the remaining monomer and the reducing agent were dropped into the starch solution in step 3 simultaneously, where dropping time was 1-2.5 h, and a reaction mixture was controlled at a temperature not exceeding 65°C;
[33] step 6, after dropping, stirring continued for 10 min; and
[34] step 7, based on 2%o of the amount of the starch, a terminator was weighed and dissolved in a small amount of deionized water, a resulting terminator solution was added to the reaction mixture in one portion and stirred for 10-20 min to terminate the reaction, and the reaction mixture was neutralized to approximately pH 5 with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive.
[35] The resulting starch adhesive had excellent adhesive effects on paper products, plastic products, and wood products; in addition, biodegradability evaluation of the adhesive by the aerobic respiration parameter method concluded that the BOD5/CODCr ratio of the starch adhesive was 0.44, with better biodegradability.
[36] Example 3:
[37] A method for synthesizing an adhesive included the following steps:
[38] step 1, starch (potato starch, viscosity 49 mp-s, moisture content 13.51wt%) was placed in an electron beam radiation field, and degraded by irradiating at an irradiation dose of 20 kGy under aerobic conditions (for example, in the presence of air), to obtain a peroxide-containing pre irradiated starch;
[39] step 2, the foregoing starch was mixed with a 0.25 mol/L acid solution in a mass ratio of 1:4 for 40-50 min;
[40] step 3, based on 120% of the mass of the pre-irradiated starch, an allyl-containing monomer was weighed; a part thereof was mixed with the above starch solution, heated to 51-59°C, and stirred for 30 min;
[41] step 4, based on 1%o of the amount of the starch, a reducing agent was weighed and dissolved in a small amount of deionized water;
[42] step 5, the remaining monomer and the reducing agent were dropped into the starch solution in step 3 simultaneously, where dropping time was 1-2.5 h, and a reaction mixture was controlled at a temperature not exceeding 65°C;
[43] step 6, after dropping, stirring continued for 10 min; and
[44] step 7, based on 4%o of the amount of the starch, a terminator was weighed and dissolved in a small amount of deionized water, a resulting terminator solution was added to the reaction mixture in one portion and stirred for 10-20 min to terminate the reaction, and the reaction mixture was neutralized to approximately pH 5 with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive.
[45] The resulting starch adhesive had excellent adhesive effects on paper products, plastic products, and wood products; in addition, biodegradability evaluation of the adhesive by the aerobic respiration parameter method concluded that the BOD5/CODCr ratio of the starch adhesive was 0.45, with better biodegradability.
[46] Other types of starch can also be achieved by the present disclosure and are not elaborated herein. All raw materials and upper and lower limits thereof, along with upper and lower limits of all process parameters, listed by the present disclosure can achieve the present disclosure, and examples will not be enumerated herein.
Claims (2)
1. A method for synthesizing an adhesive, comprising the following steps: step 1, placing starch in a radiation field, and degrading the starch by irradiating at an irradiation dose of 2-100 kGy under aerobic conditions, to obtain a peroxide-containing pre irradiated starch; step 2, mixing the foregoing starch with a 0.25 mol/L acid solution in a mass ratio of 1:4 for -50 min; step 3, based on 50%-200% of the mass of the pre-irradiated starch, weighing an allyl containing monomer, mixing a part thereof with the above starch solution, heating to 51-59°C, and stirring for 30 min; step 4, based on 1%o of the amount of the starch, weighing and dissolving a reducing agent in a small amount of deionized water; step 5, dropping the remaining monomer and the reducing agent into the starch solution in step 3 simultaneously, wherein the dropping lasts for 1-2.5 h, and a reaction mixture is controlled at a temperature not exceeding 65°C; step 6, after dropping, keeping stirring for 10 min; and step 7, based on 2-4%o of the amount of the starch, weighing and dissolving a terminator in a small amount of deionized water, adding a resulting terminator solution to the reaction mixture in one portion, stirring for 10-20 min to terminate the reaction, and neutralizing the reaction mixture to approximately pH 5 with NaOH solution to obtain a pasty and sticky liquid, namely, a degradable adhesive.
2. The method for synthesizing an adhesive according to claim 1, wherein, the starch in step 1 is any one from the group consisting of potato starch, cassava starch, kudzu starch, and sweet potato starch; the radiation field is any one of y-ray, X-ray, and electron beam; acrylate in step 3 is any one from the group consisting of butyl meth acrylate, methacryloyloxyethyl trimethyl ammonium chloride, and acryloyloxyethyl trimethyl ammonium chloride; the reducing agent is a redox system comprising ammonium persulfate and sodium sulfite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102582A AU2021102582A4 (en) | 2021-05-14 | 2021-05-14 | Method for synthesizing adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102582A AU2021102582A4 (en) | 2021-05-14 | 2021-05-14 | Method for synthesizing adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021102582A4 true AU2021102582A4 (en) | 2021-07-01 |
Family
ID=76584653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021102582A Ceased AU2021102582A4 (en) | 2021-05-14 | 2021-05-14 | Method for synthesizing adhesive |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2021102582A4 (en) |
-
2021
- 2021-05-14 AU AU2021102582A patent/AU2021102582A4/en not_active Ceased
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| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |