using resources - thermosoftening and thermosetting Flashcards
(6 cards)
1
Q
what do the properties of polymers depend on
A
the monomer and the conditions used to make the polymer
2
Q
which is softer, LDPe or HDPe
A
low density poly(ethene)
3
Q
how could we change the property of a polymer
A
change the temperature, pressure or add a catalysts
4
Q
what is thermosoftening
A
melt when we heat them, we can reshape them when they are soft and they eventually go back to a solid once cooled
5
Q
what happens if we heat a thermosoftening polymer
A
the intermolecular forces break allowing the metal to change shape
6
Q
what is thermosetting
A
do not melt when we heat them, strong covalent crosslinks
