Heat Resistant Degradable Material Polylactic Acid Granules

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Physical and Chemical Properties of Polylactic Acid
Physical properties of Polylactic Acid
Density: 1.25-1.28 g/cm3
Melting point: 176 °C
Characteristic viscosity IV: 0.2-8 dL/g
Glass transition temperature: 60-65 °C.
Heat transfer coefficient: 0.025 λ(w/m-k)
Mechanical properties of PLA
Tensile strength: 40-60 MPa
Elongation at break: 4%-10
Modulus of elasticity: 3000-4000 MPa
Bending modulus: 100-150 MPa
Izod impact strength (unnotched): 150-300 J/m
Izod impact strength (notched): 20-60 J/m
Rockwell hardness: 88
Advantages of Polylactic Acid
1.Polylactic Acid (PLA) is a new biodegradable material made from starch raw materials derived from renewable plant resources (such as corn). The starch raw material is saccharified to obtain glucose, and then glucose and certain strains of bacteria are fermented to make high-purity lactic acid, and then a certain molecular weight of PLA is synthesized by chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in nature after use, eventually generating carbon dioxide and water without polluting the environment, which is very beneficial to the protection of the environment and is recognized as an environmentally friendly material. Ordinary plastics processing method is still incineration cremation, resulting in a large number of greenhouse gases into the air, while PLA plastics are buried in the soil degradation, the carbon dioxide generated directly into the soil organic matter or be absorbed by plants, will not be discharged into the air, will not cause the greenhouse effect.
2.Good mechanical properties and physical properties. Polylactic acid is suitable for blow molding, thermoforming and other processing methods, processing is convenient, very widely used. It can be used to process all kinds of plastic products from industrial to civil, packaged food, fast food lunch boxes, non-woven fabrics, industrial and civil cloth. And then processed into agricultural fabrics, health care fabrics, wipes, sanitary products, outdoor ultraviolet fabrics, tent fabrics, mats and so on, the market outlook is very favorable.
3.Good compatibility and degradability. Polylactic acid in the field of medicine is also very widely used, such as the production of disposable infusion appliances, non-disassembly type surgical sutures, etc., low molecular polylactic acid as a slow-release drug packaging agent.

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(1)Polymers：Polymerisation is the process by which the repeating units that make up a polymer are linked together by covalent bonds.Polymers can exist in different states depending on the phase, conformation and arrangement of their molecular chains. The two main states are amorphous and crystalline. Polymers usually exist in a semi-crystalline form in which amorphous and crystalline phases coexist.

(2)Catalysts And Auxiliaries：A catalyst is generally defined as a substance that increases the rate of a reaction without changing the total standard Gibbs free energy change of the reaction. It can also be expressed as a substance that increases the rate of a chemical reaction without altering the chemical equilibrium and whose own mass and chemical properties do not change before or after the chemical reaction.Auxiliaries (auxiliaries; additives) Defined in medicine as excipients and additives used in the production of medicines and in the formulation of prescriptions, i.e., a general term for all materials other than the main active ingredient of the drug, and an important constituent of pharmaceutical preparations. Also known as additives.Our main Catalysts and Additives products include Rubber Additives、Water Treatment Agent.