Polymer science fundamentals
Origin
Structure
# Polymer types by thermal behavior
polymer_types = {
'thermoplastics': 'Soften on heating (PE, PP, PVC)',
'thermosets': 'Crosslink on heating (epoxy, phenol-formaldehyde)',
'elastomers': 'Elastic deformation (rubber, silicone)'
}
# Amorphous vs Crystalline
structure_types = {
'amorphous': 'Random coil, no order (glass below Tg)',
'semicrystalline': 'Ordered regions in amorphous matrix (Tm > Tg)',
'crystalline': 'Highly ordered (rare in polymers)'
}