amakuru

ifoto

Photoinitiator, izwi kandi nka fotosensitizer cyangwa ifotora, ni ubwoko bwa sintetike ishobora gukuramo ingufu z'uburebure bumwe na bumwe mu karere ka ultraviolet (250 ~ 420nm) cyangwa akarere kagaragara (400 ~ 800nm) kandi ikabyara radicals na cations kubuntu.
Gutangiza monomer polymerisation ya cross-ihuza ibice byakize.

Molekile yatangije ifite ubushobozi bwo kwinjiza urumuri mukarere ka ultraviolet (250-400 nm) cyangwa akarere kagaragara (400-800 nm).Nyuma yo gukuramo ingufu z'umucyo mu buryo butaziguye cyangwa butaziguye, molekile itangiza ihinduka kuva hasi yubutaka igana kuri reta imwe yishimye, hanyuma igasimbukira kuri reta yishimye inyuze muri sisitemu.
Nyuma yo gushimishwa na reta imwe cyangwa eshatu zifite imiti ya monomolecular cyangwa bimolecular reaction, ibice bikora bishobora gutangiza polymerisation ya monomers birakorwa, kandi ibyo bice bikora birashobora kuba radicals yubusa, cations, anion, nibindi.
Ukurikije uburyo butandukanye bwo gutangiza, abafotora bashobora kugabanywamo amafoto yubusa ya polymerisiyonike yubusa hamwe nifoto ya cationic cotique, muribo hakoreshwa amafoto menshi ya radical polymerisation yubusa.