Join Date: Dec 2000
Location: Het rijk van Nijmegen, the Netherlands
Re: Will the white finish of Ibanez PGM301 aged overtime?
UV rays destroy plastics, as does oxidation. Clear paint will yellow and pigments will degrade. Even something as innocuous as paper (acidic!) inside a guitar case can degrade the paint.
Note, there is no separate clear laquer on top of the polyurethane paint. The polyurethane itself is clear (just look at the back of the neck), there are paint particles in it to make it white, to give it a slight hue or some opaque colour.
The trick in keeping paint white is in a combination of UV inhibitors, stable pigments (such as titanium dioxide=white) and a non yellowing clear. When Ibanez introduced the JemVWH, Vai specified a white that wouldn't yellow as much as the UVVWH.
I can't say for sure that your PGM also uses this later type of paint, but considering the JemVWH was introduced over 15years ago and paint systems have improved since (ie fluorinated polyurethanes), there is no reason a current white should age much, but it is almost impossible to keep it completely from yellowing. Even if you keep it in the dark, chemical yellowing (oxygen, acid, etc.) will still occur, but we are talking about a +10year process. Put it in direct sunlight or under a cheap halogen spotlight and it will yellow.