Hi, looking at this image of two polymers. Is the boiling point of PET higher than that of PBT? Justify your answer. I guess this has to do with the fact that one polymer is bulkier and the other has a longer C chain. Is PBT more disperse than PET? Thanks in advance

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tatianagomezb · Answer

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tatianagomezb · Answer

I meant the melting point, why would i want to boil them heheheh...

alphadxg · Answer

PET has a higher melting point, but why do you think this is so? 

What is one of the most looked at criteria when trying to determine melting point from the compound and its structure? ;) hint there

tatianagomezb · Answer

So it is then because the PET has stronger dipole dipole interactions whereas, the PBT has stronger london dispersion forces.

uncledrew · Answer

@alphadxg  can you help me out.................i just asked a question................name is uncle drew.

alphadxg · Answer

@uncledrew In a second, wait your turn please ;)

alphadxg · Answer

@tatianagomezb Right, inter molecular forces are stronger in PET so we need more energy to overcome the forces.

tatianagomezb · Answer

Great. Thank you so much

alphadxg · Answer

No problem mate :)