High-conductivity degradable plastic film composite material containing carbon nanotubes and preparation method of composite material

Abstract

The invention discloses a high-conductivity degradable plastic film composite material containing carbon nanotubes and a preparation technology of the composite material. The composite material is characterized by being prepared from starch, polyving akohol, urea, glycerol, L-proline, NaOH, nanometer TiO2, manganese stearate, kaolin, chitosan, sodium carboxymethylcellulose, attapulgite, graphene oxide, polyethyleneimine, ethenyl ethanoate, the multiwalled carbon nanotubes, silver acetate and the like. A composite catalyst is prepared by modifying nanometer TiO2 by means of proline sodium, kaolin serves as a biologically active agent, manganese stearate serves as a degradation accelerator, and a biodegradable composite film is prepared; sodium carboxymethylcellulose is added to be mixed with the attapulgite and chitosan to prepare the composite material. The starch is modified by means of ethenyl ethanoate, and static binding force exists between graphene oxide and polyethyleneimine, so that the barrier property of the composite film is improved, and the oxygen permeability is reduced.

Description

technical field

[0001] The invention relates to the field of composite materials, in particular to a high-conductivity degradable plastic film composite material containing carbon nanotubes and a preparation process thereof. Background technique

[0002] In order to protect the environment and alleviate the shortage of petroleum resources, the use of petroleum-based plastic materials should be reduced, and bio-based degradable and environmentally friendly plastic materials should be developed and utilized. Biodegradable materials have excellent biocompatibility and environmental friendliness, and become The focus of research in the field of packaging materials.

[0003] Cong Hongjie used starch (St) and polyvinyl alcohol (PVA) as the main raw materials in his master's degree thesis "Preparation and Thermal Decomposition Kinetics of Degradable Plastic Films", adding urea (crosslinking agent), glycerin Alcohol (plasticizer), the St / PVA completely biodegradable plastic film wa...

Examples

Embodiment

[0021] A high-conductivity degradable plastic film composite material containing carbon nanotubes, prepared from the following raw materials in parts by weight (g):

[0022] Starch 42, polyvinyl alcohol 31, urea 0.4, glycerol 3, L-proline 5, NaOH3, nano TiO 2 6. Manganese stearate 4, kaolin 7, chitosan 6, sodium carboxymethyl cellulose 4, attapulgite 11, graphene oxide 6, polyethyleneimine 3, vinyl acetate 8, multi-walled carbon nanotubes 6 , Silver acetate 5, acetic acid, deionized water, ammonia water, concentrated nitric acid amount.

[0023] A method for preparing a high-conductivity degradable plastic film composite material containing carbon nanotubes, characterized in that, the steps are as follows:

[0024] a. Dissolve L-proline 1:30 in deionized water, add NaOH and stir for 1 hour to obtain liquid A, and add nano-TiO 2 Disperse in deionized water at 1:20, sonicate for 1h to obtain liquid B, add liquid A dropwise to liquid B under magnetic stirring, stir at 70-80°C f...

technical field

[0001] The invention relates to the field of composite materials, in particular to a high-conductivity degradable plastic film composite material containing carbon nanotubes and a preparation process thereof. Background technique

[0002] In order to protect the environment and alleviate the shortage of petroleum resources, the use of petroleum-based plastic materials should be reduced, and bio-based degradable and environmentally friendly plastic materials should be developed and utilized. Biodegradable materials have excellent biocompatibility and environmental friendliness, and become The focus of research in the field of packaging materials.

[0003] Cong Hongjie used starch (St) and polyvinyl alcohol (PVA) as the main raw materials in his master's degree thesis "Preparation and Thermal Decomposition Kinetics of Degradable Plastic Films", adding urea (crosslinking agent), glycerin Alcohol (plasticizer), the St / PVA completely biodegradable plastic film wa...

Examples

Embodiment

[0021] A high-conductivity degradable plastic film composite material containing carbon nanotubes, prepared from the following raw materials in parts by weight (g):

[0022] Starch 42, polyvinyl alcohol 31, urea 0.4, glycerol 3, L-proline 5, NaOH3, nano TiO 2 6. Manganese stearate 4, kaolin 7, chitosan 6, sodium carboxymethyl cellulose 4, attapulgite 11, graphene oxide 6, polyethyleneimine 3, vinyl acetate 8, multi-walled carbon nanotubes 6 , Silver acetate 5, acetic acid, deionized water, ammonia water, concentrated nitric acid amount.

[0023] A method for preparing a high-conductivity degradable plastic film composite material containing carbon nanotubes, characterized in that, the steps are as follows:

[0024] a. Dissolve L-proline 1:30 in deionized water, add NaOH and stir for 1 hour to obtain liquid A, and add nano-TiO 2 Disperse in deionized water at 1:20, sonicate for 1h to obtain liquid B, add liquid A dropwise to liquid B under magnetic stirring, stir at 70-80°C f...