This is the general equation for the packing parameter to find out what shape the lipids arrange into:(adsbygoogle = window.adsbygoogle || []).push({});

And this is what we have been given in class:

http://i.imgur.com/iGsbXHi.jpg

I'm struggling with the surfactant tail volume, v term. I understand the a is the optimal surface area of the head, but what is b?

I've looked everywhere and no where else has the b. Also if the v term has an l (critical chain length) in it then when inserted into the packing parameter equation the l's cancel and it's no longer dependant on l.

If someone could help it would be really appreciated as the lecturer has gone AWOL and doesn't reply to emails so I'm stuck.

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# Calculating surfactant tail volume of a lipid

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