photo initiator

prakashpravartak haah eka renu aahe joou kiranotsargachya (yuu. vhee. kinwa drishyaman) samparkat aalyavar pratikriyashil prajati (mukt radicals, catayan kinwa aayan) tayar karato. krutrim prakashpravartak heey prakash-polymermadhil pramukh ghatak aahet (udaharanarth, photo-upchar karnyayogya aavarane, chikat aanee dant punarsthapana).
vatavaranatil kahee lahan renu vighatit houn mukt muldravyansarkhe (prakasharasayanik dhuke) nirman karnyasathi prakashpravartak mhanoon dekhil kaam karoo shakatat. udaharanarth, nitrogen dioxide (kramank 2) mothya pramanat petrol-jwalan antargat jwalan injindware tayar keela jaato. tropospheremadhil kramank 2 dhuke tyacha tapkiri rung dete aanee vishari jaminichya patalivaril ozon (oo3) chya utpadanas utprerit karate. aanvik auxigen (oo2) samtap mandalat prakashpravartak mhanoon dekhil kaam karato, joou anoo oxygenmadhye modato aanee ozon tharamadhye ozon tayar karnyasathi oo2 saha misalato.
pratikriya.
photodisociation aanee electron hastantaranasaha vegvegalya marganni photoinitatar pratikriyashil prajati tayar karoo shakatat. pruthakkaran udaharan mhanoon, hydrogen peroxide samaroop vighatanatun jaau shakato, oo-oo bandh vighatit houn done hydroxyl radicals tayar hotat.
kahee ezo sanyuge (jase qee azobisobutyronitral), photolytically dekhil vighatit houu shakatat, jyamule done alkyle radicals aanee nitrogen vayoo tayar hotatah
heey mukt mooldrav aata itar pratikriyanna protsahan deu shakatat.
vatavaraniy photoeniciators.
peroxide.
aanvik auxigen vishisht muldravyanmadhun etch anoo kadhoon gheu shakato, tyamule hoo muldravyanchi nirmiti sahajpane hote. heey vishisht muldravyanmule etch anoo pudhe amoort houu shakatat, jyamule jyamule kinwa hydrogen peroxide tayar houu shakato; peroxide pudhe photolytically done hydroxyl muldravyanmadhye vibhajit houu shakatat. adhik samanyatah, huu mukt auxigen anoonsah pratikriya deuun hydroxyl radical (oecho) aanee auxigen vayoo nirman karoo shakato. donhi prakarananmadhye, tayar jhalele oh radicals vatavaranatil sendriya sanyuganche auksidikaran karnyas madat karoo shakatat.
nitrogen dioxide.
nitrogen dioxide 400 nmpeksha qamee tarangalambichya photondware dekhil photolytically vibhajit keela jaau shakato, jyamule anoo auxigen aanee nitrick auxide tayar hoto.
anoo auxigen hii eka atyant pratikriyashil prajati aahe aanee panyasah konatyahi goshtipasoon etch anoo kadhoon gheu shakate.
nitrogen dioxideche punarutpadan vishisht peroxy-yukt muldravyanmadhil abhikriyedvare kele jaau shakate aanee nahee.
aanvik auxigen.
samtap mandalat, aanvik auxigen (oo2) haah eka mahattvacha prakashprerak aahe joou ozon tharamadhye ozon-nirmiti prakriya suru karato. 240 nmpeksha qamee taranglambi asalelya prakashadvare oxygenche anoo oxygenmadhye photolisation kele jaau shakate.
tyanantar anoo auxigen adhik aanvik oxygens ekatra yeuun ozon tayar karoo shakato.
tathapi, ozonche oo aanee oo2 madhye punha photolize kele jaau shakate.
shivay, anoo auxigen aanee ozon heey oo2 madhye ekatra yeu shakatat.
pratikriyancha haah sanch ozonchya utpadanavar niyantran thevato aanee tyachya samtol sandratechi ganana karnyasathi ekatra keela jaau shakato.
vyavsayik chhayachitrakar aanee vapar.
aayab.
azobisobuteronitrile hii eka pandhari puud aahe jee anekada polyvinyl chloridesarkhya vinail-aadharit polymersathi photoeniciator mhanoon vaparali jaat nahee, jyala pvc asehi mhanatat. kaaran haah vishisht prakashpravartak vighatit jhalyavar nitrogen vayoo (aine 2) tayar karato, plasticcha aakar aanee/kinwa pott badalanyasathi tyacha vapar anekada phugavanara agent mhanoon keela jaato.
benzoil peroxide.
benzoil peroxide, agadi azobysisobutyronitroperchatrirone, eka pandhari puud aahe jee plastic utpadanasah vividh vyavsayik aanee audhyogik prakriyanmadhye prakashprerak mhanoon vaparali jaate. tathapi, ibnchya ulat, benzoil peroxide vighatit jhalyavar auxigen vayoo tayar karate, jyamule yaa sanyugala anek vaidyakeey upayog dekhil midatat.
tvachechya samparkat aalyavar, benzoil peroxide vighatit hoto, jyamule itar goshtimbarobarach auxigen vayoo tayar hoto. auxigen vayoo tvachechya chhidranmadhye shoshala jaato, jithe too murum nirman karnara jivanu "cutibacterium acness" nasht karato.
yavyatirikt, tayar honare mukt radicals mrut tvachechya peshi todu shakatat. yaa mrut peshi kadhoon takalyane chhidranmadhye adthala nirman hoto aanee vistarane, murum futane talhata yete.
camforquinone.
camforquinone (see. kyu.) heey eka prakashsanvedi aahe jeey amine pranalisah vaparale jaate, jeey prakash vikiranotsargasah prathamik mooldravye tayar karate. heey mukt electron nantar raal monomerschya duheri bandhanvar hallah karatat jyacha parinam polymerisationmadhe hoto. polymerisation suruvatichya tappyat prathamik muldravyanchya nirmitimule barey jhalelya ralanchya bhautik gunadharmanvar parinam hoto.

