Renewable Energy/Plastics (Materials for Plastics (Cellulose, Coal,…
Softens on heating and hardens again on cooling
Never softens once it has been molded
EP - Epoxide
PF - Phenol-formaldehyde
PTFE - Polytetrafluroroethylene
Polymer as a molecule of repeating units
Materials for Plastics
Crude oil is refined and separated by distillation.
Each fraction is a different mixture of hydrocarbon chains.
One of these fractions, naphtha, turns into ethane or propane, which later changes into ethylene and propylene.
Ethylene and Propylene are linked and to form polymer chains