tala fou

photoinitiator

Photoinitiator, e taʻua foi o le photosensitizer poʻo le photocuring agent, o se ituaiga o vailaʻau faʻapipiʻi e mafai ona faʻaaogaina le malosi o nisi galu i le itulagi ultraviolet (250 ~ 420nm) poʻo le vaʻaia vaʻaia (400 ~ 800nm) ma maua ai faʻamalosi saoloto ma cations.
E amata ai le monomer polymerization o fa'aputuga fa'amālōlō feso'ota'i.

O le mole mole amata o loʻo i ai se malosi faʻafefe malamalama i le itulagi ultraviolet (250-400 nm) poʻo le vaʻaia (400-800 nm).A uma ona mitiia le malosi malamalama tuusao pe le tuusao, o le initiator molecule suiga mai le tulaga eleele i le tulaga fiafia singlet, ona oso lea i le tulaga fiafia tolu tolu e ala i le intersystem.
A maeʻa ona faʻatupuina le taʻaloga faʻapitoa poʻo le tolu tolu faʻataʻitaʻiga o vailaʻau monomolecular poʻo le bimolecular, o vaega malosi e mafai ona amataina le polymerization o monomers e gaosia, ma o nei vaega malosi e mafai ona avea ma radical free, cations, anions, ma isi.
E tusa ai ma auala eseese amata, e mafai ona vaevaeina photoinitiators i free radical polymerization photoinitiators ma cationic photoinitiators, lea o le free radical polymerization photoinitiators e sili ona faʻaaogaina.