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Preparation method of graphene oxide enhanced tanning waste skin collagen powder/polylactic acid composite material

A composite material and skin collagen technology, which is applied in the field of waste recycling and reuse, can solve the problems of reduced mechanical strength of molded products, low material viscosity and strength, slow shaping speed, etc., achieve excellent thermoplastic processing characteristics, and improve performance stability performance, improve the effect of mechanical strength

Inactive Publication Date: 2017-04-19
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its poor melt performance, the viscosity and strength of the material during processing and application are low, resulting in a slow setting speed during the blooming process; at the same time, it is very easy to decompose in the melt state, resulting in severe mechanical strength of the molded products. decline

Method used

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  • Preparation method of graphene oxide enhanced tanning waste skin collagen powder/polylactic acid composite material
  • Preparation method of graphene oxide enhanced tanning waste skin collagen powder/polylactic acid composite material
  • Preparation method of graphene oxide enhanced tanning waste skin collagen powder/polylactic acid composite material

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Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of graphene oxide reinforced tannery discarded leather collagen powder / polylactic acid composite material, the steps are:

[0030] a. Surface modification of graphene oxide:

[0031] Get 100 parts by weight of graphene oxide, 3 parts by weight of sodium hydroxide (NaOH), 6 parts by weight of sodium chloroacetate (ClCH 2 COONa) and 150 parts by weight of water, mixed, reacted at a temperature of 50°C for 2h, filtered, the solid was washed with water (to remove unreacted ions, etc.), dried at a temperature of 60-80°C for 6-12h, and the solid was prepared. The obtained surface modified graphene oxide;

[0032] b, preparation of hydrophobic tanning waste leather collagen powder:

[0033] Take by weighing 100 parts by weight of tanning waste hide collagen protein powder, mix with 100 parts by weight of water to obtain a mixed solution, then add 5% glutaraldehyde of the weight of tanning waste hide collagen protein powder (utilize the aldehyde gro...

Embodiment 2

[0038] A kind of preparation method of graphene oxide reinforced tannery discarded leather collagen powder / polylactic acid composite material, the steps are:

[0039] a. Surface modification of graphene oxide:

[0040] Get 100 parts by weight of graphene oxide, 6 parts by weight of sodium hydroxide (NaOH), 6 parts by weight of sodium chloroacetate (ClCH 2 COONa) and 150 parts by weight of water, mixed, reacted at a temperature of 450°C for 2h, filtered, the solid was washed with water, and dried at a temperature of 60-80°C for 6-12h, and the solid was the prepared surface-modified graphite oxide alkene;

[0041] b, preparation of hydrophobic tanning waste leather collagen powder:

[0042] Weigh 100 parts by weight of tanning waste hide collagen protein powder, mix with 150 weight parts of water to obtain a mixed solution, then add 5% glutaraldehyde by weight of tanning waste hide collagen protein powder to mix with the amino group in the protein powder for crosslinking Reac...

Embodiment 3

[0047] A kind of preparation method of graphene oxide reinforced tannery discarded leather collagen powder / polylactic acid composite material, the steps are:

[0048] a. Surface modification of graphene oxide:

[0049] Get 100 parts by weight of graphene oxide, 3 parts by weight of sodium hydroxide (NaOH), 5 parts by weight of sodium chloroacetate (ClCH 2 COONa) and 180 parts by weight of water, mixed, reacted at a temperature of 40°C for 3h, filtered, the solid was washed with water, and dried at a temperature of 60-80°C for 6-12h, which was the prepared surface-modified graphene oxide;

[0050] b, preparation of hydrophobic tanning waste leather collagen powder:

[0051] Weigh 100 parts by weight of tanning waste hide collagen protein powder and mix it with 100 weight parts of water to obtain a mixed solution, then add 5% glutaraldehyde by weight of tanning waste hide collagen protein powder to mix, and then add carbonic acid in several times under stirring. sodium hydroge...

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Abstract

The invention discloses a preparation method of a graphene oxide reinforced leather solid waste collagen powder / polylactic acid composite. The preparation method is characterized in that graphene oxide, sodium hydroxide, sodium chloroacetate and water are mixed for reaction, filtered and washed to obtain surface modified graphene oxide; leather solid waste collagen powder is mixed with water, glutaraldehyde is added, pH is regulated to be 8.0 through sodium bicarbonate, the mixture is filtered, solid substances are washed and dried, and hydrophobic leather solid waste collagen powder is obtained; 1-100 parts by weight of the hydrophobic leather solid waste collagen powder, 1-100 parts by weight of polylactic acid, 1-20 parts by weight of the surface modified graphene oxide, 0-10 parts by weight of a compatibilizer and 0-10 parts by weight of a plasticizer are taken and mixed, the uniformly mixed co-mixture is dried and fed into a twin-screw extruder for melt blending, extruding and granulating, and the composite is prepared. The composite has excellent thermoplastic processing characteristics and mechanical properties, and a product of the composite can be degraded completely after use and is environment-friendly.

Description

technical field [0001] The invention belongs to the recovery and reuse of waste, and relates to a preparation method of graphene oxide reinforced tanning waste leather collagen powder / polylactic acid composite material. The new thermoplastic blended composite material obtained by blending and modifying graphene oxide-reinforced tanning waste leather collagen powder and polylactic acid has good processing performance, and has excellent thermoplastic processing characteristics in extrusion molding, blow molding, injection molding, etc. ; Graphene oxide-enhanced composite materials can effectively improve its mechanical properties and meet the requirements of its subsequent development products such as films, foams and other related product standards; Graphene oxide-enhanced tanning waste leather collagen powder and polylactic acid composite products can Completely degradable and environmentally friendly, it can be widely used in the production and processing fields of chemical i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L89/06C08L67/04C08L23/08C08K13/06C08K9/04C08K3/04C08K5/1535C08K5/11
Inventor 周建苏林张红平林晓艳罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH