I read a lot about IV and have not been able to figure out what it is. I'm new to all this. Would someone PLEASE help me out here? Thanks Roy
Hello Roy I gave you this before: Start here: "Where do I start?" http://journeytoforever.org/biodiesel_make.html#start That's on this page: http://journeytoforever.org/biodiesel_make.html Make your own biodiesel: Journey to Forever Read the whole thing, and then keep going. You'll find this on that page: Iodine Values -- High Iodine Values -- Talking about the weather All you need to know about IV. Best wshes Keith
TLC Orchids and Such <[EMAIL PROTECTED]> wrote: Hydrogenated canola has an IV of around 65 while non hydrogenated has an IV of around 112. Does anyone know if the IV in soybean (131) safflower (145) hemp (165) or sunflower (133) are altered in any way by the hydrogenation process? ----- Original Message ----- From: "bob allen" To: Sent: Friday, April 01, 2005 3:24 PM Subject: Re: [Biofuel] Re: soybeanoil a bad choice for BD making? > > Howdy Kieth and Jan > > > At the risk of looking foolish as I am an organic chemist, but don't > have much experience with polymer chemistry- here goes > > > Polymerization is a molecule molecule reaction. A compound with double > carbon carbon bond is particularly susceptible free radical oxidation. > Let's call them U. Compounds without carbon carbon double bounds are > relatively unreactive. We will call these S. Oxygen will activate one > molecule, U, but for polymerization to occur, the activated molecule > must encounter another U, then the now covalently bonded pair, must > encounter another U, and so on. Collisions of activated U with S don't > result in a reaction. > > > It seems to me that if you "dilute" U with S, that you will reduce > polymerization. > > Or how about this. An activated molecule has only a finite amount of > time to react. If an activated molecule U "bumps into" another U then > chain growth continues. But if activated U bumps into S, no reaction > occurs, other than U reacting internally, which also stops chain growth. > > > Polymer chemists can modulate the number of molecules in a chain (chain > length) by addition of non polymerizing stuff. > > > Being a right brain guy, this discussion is made more difficult, as I > can't draw all the pictures which exemplify the points I am trying to > make. :( > > > The long and short of it (no pun intended) chain length of polymers > will be reduced by dilution of biodiesel blended from high IV oils with > low IV oils. Put another way, the time to reach a specified degree of > polymerization will be extended by dilution.
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