UMURINZI WA POLYMER: UV ABSORBER.

Imiterere ya molekile yaImashini ya UVmubisanzwe birimo guhuza inshuro ebyiri cyangwa impeta zimpumuro nziza, zishobora gukurura imirasire ya ultraviolet yuburebure bwihariye (cyane cyane UVA na UVB).

Iyo imirasire ya ultraviolet irasa molekile ikurura, electron muri molekile ziva mubutaka zikajya kumunezero, zikurura ingufu z'imirasire ya ultraviolet.

Nyuma yo gukuramo urumuri ultraviolet, molekile iri mumunezero mwinshi n'imbaraga nyinshi. Kugirango dusubire kumiterere yubutaka butajegajega, molekile ikurura izarekura ingufu muburyo bukurikira:
TransitionNta nzibacyuho irasa: hindura ingufu mumbaraga zubushyuhe hanyuma urekure mubidukikije.
LuFluorescence cyangwa fosifore: igice cyingufu zishobora kurekurwa muburyo bwurumuri rugaragara (gake).

Mu kwinjiza imirasire ya ultraviolet no kuyihindura ingufu zubushyuhe, imashini ya UV igabanya kwangirika kwimirasire ya ultraviolet kubikoresho (nka plastiki, ibifuniko) cyangwa uruhu.
Mu bicuruzwa bituruka ku zuba, imashini zikoresha UV zirashobora gukumira imirasire ya UV kwinjira mu ruhu kandi bikagabanya ibyago byo gutwika izuba, gufotora na kanseri y'uruhu.

Imashini ya UV ikwiranye na polymers, gutwikira no kwisiga. Niba ukeneye ibicuruzwa, nyamuneka twandikire, tuzagusubiza mumasaha 48.