Biopolymers: Pla
ANALYSE PROGRESS IN THE DEVELOPMENT AND USE OF A NAMED BIOPOLYMER. THIS ANALYSIS SHOULD NAME THE SPECIFIC ENZYME USED OR ORGANISM USED TO SYNTHESISE THE MATERIAL.
How is PLA developed into different plastics? Refer to processes used and conditions (equations, catalyst/enzyme, temp, pressure) how are the different plastics used?
Structural Formula of PLA
Structural Formula of PLA
Biopolymers such as Polylactic Acid (PLA) are still in early stages of development. PLA is part of the ‘biopolyester’ group. It shows a large range of properties and therefore is one of the most promising biopolymers at the present and heading into the future. It is derived from renewable resources such as corn (biomass), which ultimately allows PLA to biodegrade under certain conditions such as the presence of oxygen. PLA is produced from biomass products such as corn. The corn is harvested and then milled to extract starch from the raw materials. From the starch, dextrose (glucose) is produced. The dextrose is then fermented, transforming into lactic acid. lactobacilli lactobacilli lactobacilli lactobacilli Dextrose lactic acid + carbon dioxide C6H12O6 CH3CHOHCOOH + CO2
The lactic acid is then altered into a polymer by condensation polymerisation, forming long chain molecular compounds into PLA. Lactic acid has been produced on the industrial scale since the 19th century and is mainly used in the food industry, cosmetics, pharmaceuticals and animal feed.
The synthesis of PLA is a multistep process which starts from the production of lactic acid and ends with polymerisation, with an intermediate step for the formation of the lactide. There are two main monomers used; lactic acid and lactide. Synthesis of PLA can follow three main routes: 1) Lactic acid monomers are directly condensation polymerised to yield a brittle polymer, unless external coupling agents are attached to increase chain length. This needs to occur at less than 200℃ as the enzyme
How is PLA developed into different plastics? Refer to processes used and conditions (equations, catalyst/enzyme, temp, pressure) how are the different plastics used?
Structural Formula of PLA
Structural Formula of PLA
Biopolymers such as Polylactic Acid (PLA) are still in early stages of development. PLA is part of the ‘biopolyester’ group. It shows a large range of properties and therefore is one of the most promising biopolymers at the present and heading into the future. It is derived from renewable resources such as corn (biomass), which ultimately allows PLA to biodegrade under certain conditions such as the presence of oxygen. PLA is produced from biomass products such as corn. The corn is harvested and then milled to extract starch from the raw materials. From the starch, dextrose (glucose) is produced. The dextrose is then fermented, transforming into lactic acid. lactobacilli lactobacilli lactobacilli lactobacilli Dextrose lactic acid + carbon dioxide C6H12O6 CH3CHOHCOOH + CO2
The lactic acid is then altered into a polymer by condensation polymerisation, forming long chain molecular compounds into PLA. Lactic acid has been produced on the industrial scale since the 19th century and is mainly used in the food industry, cosmetics, pharmaceuticals and animal feed.
The synthesis of PLA is a multistep process which starts from the production of lactic acid and ends with polymerisation, with an intermediate step for the formation of the lactide. There are two main monomers used; lactic acid and lactide. Synthesis of PLA can follow three main routes: 1) Lactic acid monomers are directly condensation polymerised to yield a brittle polymer, unless external coupling agents are attached to increase chain length. This needs to occur at less than 200℃ as the enzyme
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