Talk:Polymorphism (materials science)

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Title change suggested[edit]

Shouldn't it be "materials science and chemistry" or something like this? After all, this is about crystal structures, something made out of molecules. Klusiwurm 16:08, 29 November 2006 (UTC)

however this has been questioned recently?[edit]

however this has been questioned recently? based on what grounds?, what is in this article that could be of interest to Wiki? A wiki article with just statements like somebody said this and somebody else said that and a third guy has something to say as well is not interesting to read. Do you expect the Wiki reader to jump up and run to the library and read the reference? I am inclined to revert the edit V8rik 17:19, 29 November 2006 (UTC)

Polymorphism in pharmaceuticals[edit]

Entire sentences of this section are incomprehensible at best. I'm not sure what the bulletin points are trying to say, so I'm inclined to not edit them myself. —Preceding unsigned comment added by (talk) 17:07, 23 November 2009 (UTC)

  • that would be bullit boards? V8rik (talk) 17:54, 23 November 2009 (UTC)

Ostwald's Rule??[edit]

If a "less stable" polymorph, and a "more stable" polymorph, exist; then the former will have a higher internal energy, than the latter. Inexpertly, as the bulk material cools, there will be a (perhaps small) range of temperatures, for which the ambient thermal energy is less than the former, but more than the latter. Inexpertly, in that regime, the less stable, higher internal energy, polymorph could crystalize; whilst the more stable, lower internal energy polymorph would still be molten? (talk) 20:57, 4 October 2012 (UTC)

Rewrite needed[edit]

In my opinion this presentation needs complete revision/ Go to Macmillan Encyclopedia of Chemistry, Edited by J.J.Lagowski, Simon Schuster, N.Y., 1997., and look up the article entitled Polymorphs on page 1237., authored by BRAHAMA D SHARMA. Later on the following will be edited in the light of this article. Moved to talk page by Mikenorton (talk) 07:22, 26 February 2013 (UTC) Mercury610 (talk) 04:57, 26 February 2013 (UTC)

What do the Greek letters refer to in phases?[edit]

Greek letters are used to designate various phases, but the naming system doesn't seem to be explained anywhere. Can someone knowledgeable in this area describe how this works? --BB12 (talk) 23:31, 13 October 2014 (UTC)

Also, the use of prime and double prime symbols after the Greek letters. --BB12 (talk) 23:32, 13 October 2014 (UTC)

Examples section needs a rewrite[edit]

The section on Cefdinir appears to be biased and I don't think the perspective for this example is correct. I think it's OK to claim with PXRD and I definitily do not believe that every powder x-ray can result in a structure solution. — Preceding unsigned comment added by Equallycorrect (talkcontribs) 13:43, 27 April 2017 (UTC)

"the ability of a solid material to exist in more than one form" in lede[edit]

Minor clarification: Should that be "exist in any of several forms" or ?? as it might be misread as indicating more than one form simultaneously. Humanengr (talk) 14:27, 24 December 2018 (UTC)