Epoxidized soybean oil plasticized ethyl cellulose membrane and method for preparing the same

A technology of epoxidized soybean oil and ethyl cellulose, which is applied in the field of natural polymer film materials, can solve the problems such as no public reports of epoxidized soybean oil plasticized ethyl cellulose film materials, etc., and achieve excellent comprehensive use performance, Good mechanical properties, simple and easy to implement effect

Inactive Publication Date: 2015-09-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no public reports involving the use of epoxidized soybean oil to plasticize ethyl cellulose membrane materials

Method used

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  • Epoxidized soybean oil plasticized ethyl cellulose membrane and method for preparing the same
  • Epoxidized soybean oil plasticized ethyl cellulose membrane and method for preparing the same
  • Epoxidized soybean oil plasticized ethyl cellulose membrane and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 1.9g of ethyl cellulose in 20mL of acetone, stir to dissolve; add 0.1g of epoxidized soybean oil (epoxy value 3.0) into the above-mentioned dissolved ethyl cellulose solution, stir and mix evenly; pour the mixed solution into Put into a polytetrafluoroethylene plate, and cast to prepare a film by casting method. The film forming temperature is room temperature (25° C.) to obtain an ethyl cellulose film plasticized with epoxy soybean oil.

[0027] The ethyl cellulose film (ESO-5) plasticized by the epoxidized soybean oil obtained in this embodiment and the ethyl cellulose film (DBP-5) plasticized by dibutyl phthalate prepared under the same conditions, lemon The ethyl cellulose film plasticized with triethyl acetate (TEC-5) and the pure ethyl cellulose film (EC) without plasticizer were compared. The properties of the film are shown in Table 1 and Table 2.

[0028] Table 1 Comparison of film transparency and gas permeability

[0029]

[0030] Table 2 Compari...

Embodiment 2

[0034] Dissolve 1.5g of ethyl cellulose in 20mL of acetone, stir to dissolve; add 0.5g of epoxidized soybean oil (epoxy value 6.5) into the above-mentioned dissolved ethyl cellulose solution, stir and mix evenly; pour the mixed solution into Put into a polytetrafluoroethylene plate, and cast to prepare a film by casting method. The film forming temperature is 40° C. to obtain an ethyl cellulose film plasticized with epoxy soybean oil.

[0035] The ethyl cellulose film (ESO-25) of the epoxy soybean oil plasticization that the present embodiment obtains and the dibutyl phthalate plasticization ethyl cellulose film (DBP-25) prepared under the same conditions, lemon The ethyl cellulose film plasticized with triethyl acetate (TEC-25) and the pure ethyl cellulose film (EC) without plasticizer were compared. The properties of the film are shown in Table 3 and Table 4.

[0036] Table 3 Transparency and gas permeability of the film

[0037]

[0038] Note: "—" indicates that due to ...

Embodiment 3

[0044] Dissolve 1.4g of ethylcellulose in 20mL of acetone, stir and dissolve; add 0.6g of epoxidized soybean oil (epoxy value 6.5) into the above-mentioned dissolved ethylcellulose solution, stir and mix evenly; pour the mixed solution into Put into a polytetrafluoroethylene plate, cast and cast a film to prepare a film, and the film forming temperature is 70° C. to obtain an ethyl cellulose film plasticized with epoxy soybean oil.

[0045] The ethylcellulose film (ESO-30) plasticized by the epoxy soybean oil obtained in this embodiment is compared with the pure ethylcellulose film (EC) without plasticizer, and the performance of the film is shown in Table 5 and Table 6 shown.

[0046] Table 5 Transparency and gas permeability of the film

[0047]

[0048] Table 6 Mechanical properties of membranes

[0049]

[0050] From the results of Table 5 and Table 6, it can be seen that the ethyl cellulose film added with 30% epoxidized soybean oil has lower oxygen permeability a...

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Abstract

The invention belongs to the technical field of natural polymer membrane materials and discloses an epoxidized soybean oil plasticized ethyl cellulose membrane and a method for preparing the same. The method comprises the steps of dissolving ethyl cellulose and epoxidized soybean oil in a solvent and obtaining a mixed solution after uniform mixing; pouring the mixed solution in a die to pour the mixed solution into the membrane, and obtaining the epoxidized soybean oil plasticized ethyl cellulose membrane. The membrane has good mechanical property, flexibility, folding resistance, breaking resistance, draining property, moisture resistance and oxygen resistance and does not burn, and can serve as a biodegradable membrane material and have wide application prospect in the fields of food preservation, packaging and medicines.

Description

technical field [0001] The invention belongs to the technical field of natural polymer film materials, and in particular relates to an ethyl cellulose film plasticized by epoxy soybean oil and a preparation method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection, people have higher health requirements for plasticizers used in plastic products such as daily necessities, toys, medicine and food packaging, and replace traditional petrochemical-based polymers and plasticizers with green and environmentally friendly polymers and plasticizers Drugs have become the general trend. [0003] Ethyl cellulose is a non-ionic cellulose ether that is insoluble in water but soluble in organic solvents. Alkali resistance, weak acid resistance, good anti-aging performance, salt resistance, cold resistance, good moisture absorption resistance, stable to chemicals, long-term storage and no deterioration, etc., are widely used in tabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/28C08L91/00C08J5/18
Inventor 钟林新彭新文杨东曹学飞孙润仓
Owner SOUTH CHINA UNIV OF TECH
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