Talk:Polyvinylidene fluoride

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commercial[edit]

The tone of this wiki is quite positive... Is it written by the manufacturers of the stuff? A bit more objective couldn't hurt. 194.53.253.51 (talk) 12:48, 2 September 2010 (UTC)

Agreed. -Shootbamboo (talk) 20:55, 2 September 2010 (UTC)


How come some spell it polyvinylidene fluoride and some spell it polyvinylidine difluoride? How is it supposed to be spelled? Kr5t 23:46, 21 May 2006 (UTC)

Most journal papers use polyvinylidene fluoride or poly(vinylidene fluoride). For example:
  1. Kawai, H., (1969). "The Piezoelectricity of Poly (vinylidene Fluoride)", Jpn. J. Appl. Phys, 8, 975-976.
  2. Zhang, Q. M., Bharti, V., Zhao, X., (1998). "Giant Electrostriction and Relaxor Ferroelectric Behavior in Electron-Irradiated Poly(vinylidene fluoride-trifluoroethylene) Copolymer", Science, 280, 2101-2104.
  3. Lovinger, A. J., (1983). "Ferroelectric Polymers", Science, 220, 1115-1121.
  4. Lovinger, A. J., Wang, T. T., (1979). "Investigation of the properties of directionally solidified poly(vinylidene fluoride)", Polymer, 20, 725-732.
  5. Bauer, S., (1996). "Poled polymers for sensor and photonic applications", J. Appl. Phys., 80 (10), 5531-5558.
--Nathaniel 14:27, 29 May 2006 (UTC)

'Spam links'[edit]

Hi User:ChemGardener, I noticed you removed some of the links that I added for the material properties (1[1], 2 [2], 3[3], 4 [4]). In that case, perhaps the superscripts 1, 2, 3, 4 (in the properties table on the right) should be removed as well? --Nathaniel 14:27, 29 May 2006 (UTC)

Thermal expansion coefficient[edit]

The thermal expansion coefficient, 0.18x10^-6/K, seems to be in error because:

1. It's about 3 orders of magnitude LOWER than several online sources that give about 120x10^-6/K, and 2. It's hard to believe that a polymer would have an expansion coefficient this low.

See: http://www.arkema-inc.com/index.cfm?pag=343&PRR_ID=689 http://www.boedeker.com/pvdf_p.htm

Redbelly98 22:29, 17 December 2006 (UTC) redbelly98, 17 Dec. 2006

KYNAR® - Merely PVDF?[edit]

Upon reading more about the tradename KYNAR®, it seems that it is not just a PVDF coating, but also includes a proprietary surface preparation as well. Can anyone verify/dismiss this? If it isn't just a PVDF coating, then it should be mentioned in the article. The Deviant 20:24, 13 May 2007 (UTC)

Title versus actual item?[edit]

The title is polyvinylidene fluoride, but the first line says that we're talking about polyvinyliden difluoride. What give Fritzpoll —Preceding unsigned comment added by 82.32.57.130 (talk) 23:59, 13 December 2007 (UTC)

Das is nicht kaput "n" key! Das ist likely error caused by usink der genamen auf die people auf Deutschland. —Preceding unsigned comment added by 70.190.70.128 (talk) 07:48, 28 March 2008 (UTC)

Solubility Parameters[edit]

If anybody knows the Hansen solubility numbers for this polymer, it would be helpful if they were included in the article. This comment applies to virtually any polymer or solvent. Thanks. Lon of Oakdale (talk) 14:28, 7 May 2008 (UTC)

Lubricity[edit]

Kynar is used to lubricate photoconductor drums in copiers and laser printers. I will attempt to locate reference material. LorenzoB (talk) 05:40, 22 January 2009 (UTC)

Density?[edit]

What is This Plastic/Polymer is it a High Density Polymer or a Low Density Polymer. — Preceding unsigned comment added by Haslantis (talkcontribs) 00:28, 24 August 2012 (UTC)

Thin Film Membrane Used in Dialysis/Filtration[edit]

PVDF is the principle component of one of the various polymer thin film membranes used in spiral wound membrane filter elements. PVDF is not used for Reverse Osmosis, but rather for micro or ultra filtration. An example of such an application might be in the dairy/cheese industry or even the biopharmaceutical industry, for the isolation of analytes/products from a large fermentation vessel (such as the isolation of insulin from a large scale cell culture). Typically its a multicomponent polymer solution that is cast via a phase inversion process onto a mechanical backing like a polyester sheet. PVDF is sometimes mixed with polyvinylpyrrolidone (PVP) and cast from a solution of NMP or DMF.184.189.220.114 (talk) 13:30, 26 January 2014 (UTC)