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- poly (lactic acid) (PLA
Source: | Author:xinxinghuanbao | Published time: 2018-05-24 | 1352 Views | Share:
Of lactic acid molecules in a single have a hydroxyl and carboxyl, lactic acid molecules together, multiple - OH - COOH dehydration condensation with other molecules, - COOH - OH dehydration condensation with other molecules, and thus, they formed the polymer, hand in hand is called the polylactic acid. Polylactic acid, also known as polypropyl, belongs to the polyester family. Polylactic acid is a polymer synthesized by polymerization of lactic acid. The production process of polylactic acid is pollution-free, and the product can be biodegradable to realize the circulation in nature, so it is an ideal green polymer material.
The basic information
CAS NO. : 51-26100-6 Chinese alias: poly lactide English name: polylactide, polylactic acid, PLA English alias: polytrimethylene carbonate; 1, 3-dioxan-2-one homopolymer formula :(C3H4O2)n
Formula:


Physical and chemical properties
Physical performance:
Density: 1.20-1.30 kg/L
Melting point: 155-185 ° C,
Characteristic viscosity IV: 0.2-8 dL/g
Glass transition temperature: 60-65 ° C,
Heat transfer coefficient: 0.025 shanxi (w/m*k)
Mechanical properties:
Tensile strength: 40-60 MPa
Fracture elongation: 4-10%
Elastic modulus: 3000-4000 MPa
Bending modulus: 100-150 MPa
Izod impact strength (no gap) : 150-300 J/m
Izod impact strength (with gap) : 20-60 J/m
Rockwell hardness: 88
Introduction to the




(4) poly (lactic acid) (PLA), poly (lactic acid) (PLA) H - n - [OCHCH3CO] OH) good thermal stability, processing temperature of 170 ~ 230 ℃, good solvent resistance and can be used in a variety of ways for processing, such as extrusion, spinning, biaxial stretching, injection blow molding. Made from polylactic acid products in addition to the biodegradable, biocompatibility, gloss, transparency, and feel good heat resistance, guanghua weiye development of polylactic acid (PLA) also has a certain antimicrobial properties, flame retardant and ultraviolet resistance, so it is quite widely USES, can be used as packaging materials, such as fiber and nonwoven fabric, mainly used in clothing, underwear, clothing), industry (construction, agriculture, forestry, paper) and health care and other fields.