Research Article

Bitumen-Biopolymer Materials Modified with Polylactic Acid with Improved Physical and Chemical Properties

Table 2

Quality parameters of polylactic acid.

ParameterMeasurement unitValue

Impact strengthkJ (m)212.9
Tensile strengthMPa94.4
Relative elongation%34
Flexural strengthMPa102.5
Melt flow Indexg/10 min3
Melting temperature°C177
Molecular weightg (mol)90,000
Molecular weight distributiong (mol)80,000–100,000