CN113861647A - Full-biodegradable dental floss - Google Patents
Full-biodegradable dental floss Download PDFInfo
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- CN113861647A CN113861647A CN202111271055.2A CN202111271055A CN113861647A CN 113861647 A CN113861647 A CN 113861647A CN 202111271055 A CN202111271055 A CN 202111271055A CN 113861647 A CN113861647 A CN 113861647A
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- CN
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- agent
- dental floss
- mass
- percent
- polylactic acid
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- 241000628997 Flos Species 0.000 title claims abstract description 31
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 21
- 239000004626 polylactic acid Substances 0.000 claims abstract description 21
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 18
- 239000002667 nucleating agent Substances 0.000 claims abstract description 14
- 239000012745 toughening agent Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- -1 PCLC Polymers 0.000 claims description 5
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical group [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 5
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 5
- 229920001896 polybutyrate Polymers 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000004599 antimicrobial Substances 0.000 claims 5
- 238000006065 biodegradation reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- SBYHFKPVCBCYGV-UHFFFAOYSA-N quinuclidine Chemical compound C1CC2CCN1CC2 SBYHFKPVCBCYGV-UHFFFAOYSA-N 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a full-biodegradable dental floss, which comprises the following raw materials in percentage: 80-90% of polylactic acid; the mass content of the toughening agent is 10-20%; 0.1 to 0.5 percent of nucleating agent by mass; 0.1-0.5% of antibacterial agent. The dental floss manufactured by the invention has better overall strength and tensile force, can be subjected to biodegradation, and is more environment-friendly and more practical.
Description
Technical Field
The invention relates to the technical field of dental floss, in particular to a full-biodegradable dental floss.
Background
Dental floss is used with nylon, silk or polyester to clean plaque from adjacent surfaces, and is effective especially on flat or convex dental surfaces. Pulling down a section of dental floss with a length of about 25cm, looping a double-knot-shaped surface coil at two ends of the floss, or taking dental floss with a length of about 33cm, winding two ends of the floss on two middle fingers, passing the dental floss through contact points by using a right finger and a left finger, and controlling the distance between the two fingers to be about 1-1.5 cm. When the user feels tight but can not pass through the dental floss, the user can do a back-and-forth pull saw type action to reach the tooth surface below the contact point gently through the contact point, and meanwhile, the dental floss is placed at the bottom of the gingival sulcus to clean the gingival sulcus area.
The biodegradable metal medical material is a metal material which is gradually corroded in a living body until the metal implant is completely dissolved in the process of assisting and finishing the repair of biological tissues, and meanwhile, corrosion products of the metal material can not generate or generate slight host reaction on the living body. Therefore, the main constituent elements of the biodegradable metallic material should be basic metallic elements that can be excreted from the body of the living organism through metabolism and have a certain corrosion rate in the body of the living organism.
Polylactic acid (PLA), also known as polylactide, is a polyester polymerized from lactic acid as a raw material, and is a completely biodegradable green plastic. The polylactic acid has good biocompatibility and degradability, has the performance of petroleum-based general plastics such as Polyethylene (PE), polypropylene (PP), Polystyrene (PS) and the like compared with the traditional plastics, has high modulus, high strength and controllable processing temperature, can be subjected to processes such as injection molding, extrusion, spinning and the like to prepare products such as films, sheets, fibers and the like, is applied to a plurality of fields such as clothing, packaging, automobiles, electronics, biological medicine and the like, and is the most deeply developed and remarkably applied biodegradable plastic at present.
Most of the existing dental floss is made of non-degradable materials, so that the existing dental floss is easy to cause great environmental pollution, and aiming at the problems, a fully-biodegradable dental floss is provided.
Disclosure of Invention
The invention provides a full-biodegradable dental floss aiming at the technical defects that most of the existing dental flosses are made of non-degradable materials, and the existing dental flosses are easy to cause great environmental pollution.
The invention aims to solve the technical defects, adopts a modified technical scheme, and provides a full-biodegradable dental floss which comprises the following raw materials in percentage:
80-90% of polylactic acid;
the mass content of the toughening agent is 10-20%;
0.1 to 0.5 percent of nucleating agent by mass;
0.1-0.5% of antibacterial agent.
In a further preferred embodiment of the present invention, the following raw material percentages are further included,
the polylactic acid, the mass content is 89%;
a toughening agent with the mass content of 10 percent;
0.5 percent of nucleating agent by mass;
0.5 percent of antibacterial agent by mass.
In a further preferred embodiment of the present invention, the following raw material percentages are further included,
80% of polylactic acid by mass;
the mass content of the toughening agent is 19.8 percent;
0.1 percent of nucleating agent by mass;
0.1 percent of antibacterial agent by mass.
In a further preferred embodiment of the present invention, the toughening agent is one of PBAT, PCLC, PHA, and PPC.
In a further preferred embodiment of the present invention, the nucleating agent is one of nano calcium carbonate, nano talc and nano silica.
In a more preferred embodiment of the present invention, the polylactic acid has a glass transition temperature of 55 to 63 ℃ and a weight-average molecular weight Mw of 1X 105To 2X 105g/mol。
In a further preferred embodiment of the present invention, the antibacterial agent is a silver ion antibacterial agent, a zinc ion antibacterial agent, or a mixture of a silver ion antibacterial agent and a zinc ion antibacterial agent.
The invention has the following beneficial effects: the dental floss manufactured by the invention has better overall strength and tensile force, can be subjected to biodegradation, and is more environment-friendly and more practical.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a fully-biodegradable dental floss is provided,
80-90% of polylactic acid;
the mass content of the toughening agent is 10-20%; (PBAT, PCLC, PHA, PPC) improving the toughness of polylactic acid;
0.1 to 0.5 percent of nucleating agent by mass; (nano calcium carbonate, nano talcum powder and nano silicon dioxide) accelerates the crystallization process, increases the crystallization temperature, improves the processing conditions, enhances the tensile capability, and reduces the tensile strength, the elongation at break and the thermal stability of PLA/PBAT caused by excessive nucleating agent;
0.1-0.5% of antibacterial agent. (silver ion antibacterial agent and zinc ion antibacterial agent) for bacteriostasis and mould proofing;
the melt index of the polylactic acid is 10-25g/10min, when the melt index is more than 25g/10min, the fiber strength is not enough, and when the melt index is less than 10g/10min, the fiber forming difficulty can be caused.
The glass transition temperature of the polylactic acid is 55-63 ℃. The weight average molecular weight Mw of the polylactic acid is 1X 105To 2X 105g/mol. When the weight average molecular weight Mw of the polylactic acid is less than 1X 105g/mol, the fiber strength may be too low.
The amount of the toughening agent is less than 5%, the PLA brittleness is high, the dental floss is easy to break and is more than 30%, the tensile strength of the dental floss is poor, and the dental floss is easy to stretch and deform. The amount of the nucleating agent is less than 0.1%, the alloy processing process is not smooth and is more than 1%, and structural defects are caused, so that the continuity of the spinning process is influenced. More than 1% of the antibacterial agent causes structural defects, thereby affecting the continuity of the spinning process.
Example one
89 parts of polylactic acid;
10 parts of toughening agent;
0.5 part of nucleating agent;
0.5 part of antibacterial agent.
Example two
80 parts of polylactic acid;
19.8 parts of a toughening agent;
0.1 part of nucleating agent;
0.1 part of antibacterial agent.
And (3) tensile test: using the Instron-5699tester test, the evaluation of the antibacterial effect was carried out by the quinuclidine method
| Sample (I) | Tensile strength | Elongation at break | Number of Escherichia coli colonies |
| Example one | 37MPA | 34％ | 0 |
| Example two | 38MPA | 38％ | 0 |
。
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A fully biodegradable dental floss, comprising: comprises the following raw materials in percentage by weight:
80-90% of polylactic acid;
the mass content of the toughening agent is 10-20%;
0.1 to 0.5 percent of nucleating agent by mass;
0.1-0.5% of antibacterial agent.
2. The fully biodegradable dental floss of claim 1, further comprising, in percentages,
the polylactic acid, the mass content is 89%;
a toughening agent with the mass content of 10 percent;
0.5 percent of nucleating agent by mass.
0.5 percent of antibacterial agent by mass.
3. The fully biodegradable dental floss of claim 1, further comprising, in percentages,
80% of polylactic acid by mass;
the mass content of the toughening agent is 19.8 percent;
0.1 percent of nucleating agent by mass.
0.1 percent of antibacterial agent by mass.
4. The fully biodegradable dental floss according to claim 1, wherein the toughening agent is one of PBAT, PCLC, PHA, PPC.
5. The fully biodegradable dental floss of claim 1, wherein the nucleating agent is one of nano calcium carbonate, nano talc or nano silica.
6. The fully biodegradable dental floss according to claim 1, wherein the polylactic acid has a glass transition temperature of 55-63 ℃ and a weight average molecular weight Mw of 1 x 105To 2X 105g/mol。
7. The fully biodegradable dental floss according to claim 1, wherein the antimicrobial agent is silver ion antimicrobial agent, zinc ion antimicrobial agent, or a mixture of silver ion antimicrobial agent and zinc ion antimicrobial agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271055.2A CN113861647A (en) | 2021-10-29 | 2021-10-29 | Full-biodegradable dental floss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271055.2A CN113861647A (en) | 2021-10-29 | 2021-10-29 | Full-biodegradable dental floss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113861647A true CN113861647A (en) | 2021-12-31 |
Family
ID=78985992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111271055.2A Pending CN113861647A (en) | 2021-10-29 | 2021-10-29 | Full-biodegradable dental floss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113861647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921072A (en) * | 2022-04-22 | 2022-08-19 | 湖北正宇环保材料科技有限公司 | Antibacterial degradable injection molding material special for oral care products and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704788A (en) * | 2020-05-16 | 2020-09-25 | 中国科学院理化技术研究所 | Fully-biodegradable cotton swab stick and preparation method thereof |
| CN111733474A (en) * | 2020-05-16 | 2020-10-02 | 中国科学院理化技术研究所 | Full-biodegradable dental floss and preparation method thereof |
-
2021
- 2021-10-29 CN CN202111271055.2A patent/CN113861647A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704788A (en) * | 2020-05-16 | 2020-09-25 | 中国科学院理化技术研究所 | Fully-biodegradable cotton swab stick and preparation method thereof |
| CN111733474A (en) * | 2020-05-16 | 2020-10-02 | 中国科学院理化技术研究所 | Full-biodegradable dental floss and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921072A (en) * | 2022-04-22 | 2022-08-19 | 湖北正宇环保材料科技有限公司 | Antibacterial degradable injection molding material special for oral care products and preparation method thereof |
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Application publication date: 20211231 |