Linen or cotton?

[iosif]

On the first education I am a mathematician with chemistry. On the latter - marketing . And here comes the split personality (in a good way) .
Linen canvas several times more expensive than cotton . And what is better? This is not the sheets, which are known , are rarely carefully primed .
Professionals, please vpravte brains former chemist and current marketing manager . A former chemist finds that the ground should be securely protect the underlying cause of the harmful effects. And if not prevent - the question to the chemist , who developed this primer. Marketer believes that the less overhead in the already complicated business of the gallery - the better. By the way, six years ago the artist slipped clean linen, half-linen and pure cotton canvas of the same company.
Six years - normal flight . When there is the difference? And maybe it's not a question of chemistry , and marketing - but only in the marketing of the canvas?