Thermoplastic and Thermosetting Polymers (VCE SSCE Chemistry): Flashcards
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Thermoplastic polymers when heated
Thermoplastic polymers when heated
Soften and become pliable
Thermosetting polymers when heated
Thermosetting polymers when heated
Do not soften; decompose or burn
Forces holding thermoplastic chains together
Forces holding thermoplastic chains together
Weak intermolecular forces
Bonds in thermosetting polymers
Bonds in thermosetting polymers
Strong covalent cross-links
Recyclability of thermoplastic polymers
Recyclability of thermoplastic polymers
Highly recyclable
Structure of thermosetting polymers
Structure of thermosetting polymers
Three-dimensional network
Why thermoplastics can be remolded
Why thermoplastics can be remolded
Chains gain energy & slide past each other when heated
Cross-link pattern in elastomers
Cross-link pattern in elastomers
Occasional cross-links between chains
Key property of elastomers
Key property of elastomers
Stretch and return to original shape
Vulcanisation in rubber
Vulcanisation in rubber
Sulfur atoms form cross-links between polymer chains