CN109320932A - Uvioresistant composite membrane and preparation method thereof - Google Patents
Uvioresistant composite membrane and preparation method thereof Download PDFInfo
- Publication number
- CN109320932A CN109320932A CN201811192355.XA CN201811192355A CN109320932A CN 109320932 A CN109320932 A CN 109320932A CN 201811192355 A CN201811192355 A CN 201811192355A CN 109320932 A CN109320932 A CN 109320932A
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- Prior art keywords
- composite membrane
- uvioresistant
- preparation
- extract
- timber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic 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
- C08K5/00—Use of organic ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The present invention relates to plastic film technical fields, specially uvioresistant composite membrane and preparation method thereof, are made of Wood abstract and polylactic acid；The timber is the timber of Machilus or machilus.The industrial wood waste of timber crushes wood machining residues with plant pulverizer, and drying prepares extract, particles of polylactic acid is dissolved in chloroform, and the extract of 10-25% is added until completely dissolved, film is made.Treated composite membrane has excellent uvioresistant performance, its uvioresistant performance is without being substantially reduced after high-power ultraviolet light irradiation, and thin film mechanical performance is strong.
Description
Technical field
The present invention relates to plastic film technical fields, specially uvioresistant composite membrane and preparation method thereof.
Background technique
Plastics are universally acknowledged one of four big raw material.A kind of form processing of the plastic film as plastics has strong
Spend height, light weight, it is easily processed into type the features such as, can be used for the fields such as agricultural production, dress designing, food packaging, have extensively
Wealthy application range.Plastic film currently on the market exists be recycled difficulty, have a single function, pollute environment etc. mostly asks
Topic.The extensive use of plastic film brings and also brings huge harm to environment while convenience.Ultraviolet light meeting simultaneously
Cause food spoilage, accelerate plastic film aging, shorten film service life etc., limit the further exploitation benefit of plastic film
With.Therefore, a kind of uvioresistant is developed, degradable biological matter composite membrane is of great significance.
Summary of the invention
It is thin as made from the technology the purpose of the present invention is to provide a kind of uvioresistant composite membrane and preparation method thereof
Film can make film fully absorb the ultraviolet light in a wavelength range, have excellent uvioresistant performance, while having as far as possible
Higher transparency.
Uvioresistant composite membrane, is made of Wood abstract and polylactic acid；The timber is the wood of Machilus or machilus
Material.
The preparation method of the uvioresistant composite membrane, comprising the following steps:
(1) feedstock processing
The industrial wood waste of timber crushes wood machining residues with plant pulverizer, spare after drying at 80 DEG C；
(2) extract is prepared
Extract is prepared using soxhlet extraction methods, first connection extractor, material is bundled into paper bag with qualitative filter paper, is put
Enter in Soxhlet extractor, chloroform solvent is added, until the colourless stopping extracting of solution colour in Soxhlet extractor, collects extracting
Liquid is made into paste using Rotary Evaporators, is packed into container, puts completely stand-by to the volatilization of its solvent in the natural environment；
In extract preparatory phase, heating method can also use microwave radiation exaraction or ultrasonically auxiliary extracting method；Solvent uses
Ether and acetone can also be with.
(3) the compound film preparation of uvioresistant
Particles of polylactic acid is dissolved in chloroform, particles of polylactic acid and chloroform mass ratio are 1:10, to complete
The extract of 10-25% is added after dissolution, after object to be extracted is completely dissolved, solution is all poured into smooth, dry, smooth training
It supports in ware, places 12h and wait for that it forms a film naturally, film of tearing then is stored under room temperature.Extrusion and blow molding can also be used
Technique.
Technical solution of the present invention bring beneficial effect
1. significant effect, treated, and composite membrane has excellent uvioresistant performance, after high-power ultraviolet light irradiation
Its uvioresistant performance is without being substantially reduced, and thin film mechanical performance is strong.
2. recovery processing is easy, solvent used in process can be recycled in the later period, and processing is relatively easy to.
3. environmental-friendly, this film raw material is biological material, and uvioresistant composite membrane obtained is embedded in degradable in soil
For innocuous substance, will not cause damages to environment.
4. simple process, whole process is not related to large-scale instrument and equipment without processes such as high temperature and pressure, and technique is relatively simple.
Specific embodiment
The invention is further illustrated by the following examples.
1. feedstock processing
Raw material is the industrial wood waste of hardwood nanmu, crushes hardwood nanmu wood machining residues, drying at 80 DEG C with plant pulverizer
It is spare afterwards；
2. preparing extract
Extract is prepared using soxhlet extraction methods, first connection extractor, material is bundled into paper bag with qualitative filter paper, is put
Enter in Soxhlet extractor, chloroform solvent is added, until the colourless stopping extracting of solution colour in Soxhlet extractor, collects extracting
Liquid is made into paste using Rotary Evaporators, is packed into container, puts completely stand-by to the volatilization of its solvent in the natural environment；
3. the compound film preparation of uvioresistant
Particles of polylactic acid is dissolved in chloroform, particles of polylactic acid and chloroform mass ratio are 1:10, to complete
The extract of 10-25% is added after dissolution, after object to be extracted is completely dissolved, solution is all poured into smooth, dry, smooth training
It supports in ware, places 12h and wait for that it forms a film naturally, film of tearing then is stored under room temperature.
Claims (4)
1. uvioresistant composite membrane, which is characterized in that be made of Wood abstract and polylactic acid；The timber is Machilus or profit
The timber of Phoebe.
2. the preparation method of uvioresistant composite membrane according to claim 1, which comprises the following steps:
(1) feedstock processing
The industrial wood waste of timber crushes wood machining residues with plant pulverizer, spare after drying at 80 DEG C；
(2) extract is prepared
Smashed material extracts, and obtains extract；
(3) the compound film preparation of uvioresistant
Particles of polylactic acid is dissolved in chloroform, the extract of 10-25% is added until completely dissolved, object to be extracted is complete
After dissolution, film is made, is then stored under room temperature.
3. the preparation method of uvioresistant composite membrane according to claim 2, which is characterized in that the method that step (2) is extracted
For soxhlet extraction methods, extractor is connected, material is bundled into paper bag with qualitative filter paper, is put into Soxhlet extractor, solvent is added,
Into Soxhlet extractor, the colourless stopping extracting of solution colour, collects extract, is made into paste using Rotary Evaporators, molten
Agent uses chloroform, ether or acetone.
4. the preparation method of uvioresistant composite membrane according to claim 2, which is characterized in that the particles of polylactic acid with
Chloroform mass ratio is 1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192355.XA CN109320932A (en) | 2018-10-13 | 2018-10-13 | Uvioresistant composite membrane and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192355.XA CN109320932A (en) | 2018-10-13 | 2018-10-13 | Uvioresistant composite membrane and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109320932A true CN109320932A (en) | 2019-02-12 |
Family
ID=65261988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811192355.XA Pending CN109320932A (en) | 2018-10-13 | 2018-10-13 | Uvioresistant composite membrane and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109320932A (en) |
-
2018
- 2018-10-13 CN CN201811192355.XA patent/CN109320932A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |