Biodegradable polymer packaging material
A technology for biodegradation and packaging materials, applied in the field of biodegradable polymer materials, can solve problems such as complex processes, and achieve excellent mechanical properties, good degradation rate, and the effect of inhibiting Escherichia coli and Staphylococcus aureus.
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Embodiment 1
[0019] A biodegradable polymer packaging material prepared from modified polyvinyl alcohol, stabilizer, plasticizer and auxiliary agent;
[0020] Wherein the preparation method of modified polyvinyl alcohol is as follows:
[0021] S1: After mixing 80 parts by weight of glutaraldehyde with 60 parts by weight of extractant tributylamine and 60 parts by weight of diluent n-butanol, add 6 parts by weight of catalyst Pd / SiO 2 , heated and stirred, the heating temperature was 55°C, and air was continuously introduced into it. During the reaction, 0.05mol / L NaOH solution was added dropwise to it, and the pH of the solution was tested with a pH meter, and the pH of the solution was adjusted to 7.5. After 4 hours of reaction, after the reaction was completed The aldehyde group at one end of glutaraldehyde is oxidized to a carboxyl group, that is, the product after the reaction has a carboxyl group at one end and an aldehyde group at the other end;
[0022] S2: Filter the mixed solutio...
Embodiment 2
[0030] A biodegradable polymer packaging material prepared from modified polyvinyl alcohol, stabilizer, plasticizer and auxiliary agent;
[0031] Wherein the preparation method of modified polyvinyl alcohol is as follows:
[0032] S1: After mixing 100 parts by weight of glutaraldehyde with 80 parts by weight of extractant tributylamine and 80 parts by weight of diluent n-butanol, add 10 parts by weight of catalyst Pd / SiO 2 , heated and stirred, the heating temperature was 65°C, and air was continuously introduced into it. During the reaction, 0.05mol / L NaOH solution was added dropwise to it, and the pH of the solution was tested with a pH meter, and the pH of the solution was adjusted to 7.5. After 6 hours of reaction, after the reaction was completed The aldehyde group at one end of glutaraldehyde is oxidized to a carboxyl group, that is, the product after the reaction has a carboxyl group at one end and an aldehyde group at the other end;
[0033] S2: Filter the mixed solut...
Embodiment 3
[0039] A biodegradable polymer packaging material prepared from modified polyvinyl alcohol, stabilizer, plasticizer and auxiliary agent;
[0040] Wherein the preparation method of modified polyvinyl alcohol is as follows:
[0041] S1: After mixing 80 parts by weight of glutaraldehyde with 60 parts by weight of extractant tributylamine and 60 parts by weight of diluent n-butanol, add 6 parts by weight of catalyst Pd / SiO 2 , heated and stirred, the heating temperature was 55°C, and air was continuously introduced into it. During the reaction, 0.05mol / L NaOH solution was added dropwise to it, and the pH of the solution was tested with a pH meter, and the pH of the solution was adjusted to 7.5. After 4 hours of reaction, after the reaction was completed The aldehyde group at one end of glutaraldehyde is oxidized to a carboxyl group, that is, the product after the reaction has a carboxyl group at one end and an aldehyde group at the other end.
[0042] S2: Filter the mixed solutio...
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