Ethylene oxide (EO) waxaa loo isticmaali jiray jeermiska dila iyo nadiifinta muddo dheer waana daawada kaliya ee kiimikada ah ee adduunka u aqoonsan yahay inay tahay tan ugu kalsoonida badan. Waagii hore,oksaydh-ka ethylenewaxaa inta badan loo isticmaali jiray jeermiska iyo jeermiska warshadaha. Iyadoo la horumarinayo tignoolajiyada casriga ah ee warshadaha iyo otomaatiga iyo tignoolajiyada caqliga leh, tignoolajiyada jeermiska ethylene oxide waxaa si ammaan ah loogu isticmaali karaa xarumaha caafimaadka si loo nadiifiyo aaladaha caafimaadka ee saxda ah ee ka baqaya kulaylka iyo qoyaanka.

Astaamaha oksaydhka ethylene

Etylene oksaydhwaa jiilka labaad ee jeermiska dila kiimikada ka dib formaldehyde. Wali waa mid ka mid ah jeermiska dila ugu fiican ee qabowga waana xubinta ugu muhiimsan ee afarta tiknoolajiyadood ee ugu waaweyn ee jeermiska dila heerkulka hooseeya.

Ethylene oxide waa isku-dhis fudud oo epoxy ah. Waa gaas aan midab lahayn heerkulka qolka iyo cadaadiska. Waa ka culus yahay hawada waxayna leedahay ur udgoon oo ether ah. Ethylene oxide waa dab-shid iyo qarax. Marka hawadu ka kooban tahay 3% ilaa 80%oksaydh-ka ethylene, gaas isku dhafan oo qarxa ayaa sameysma, kaas oo guba ama qarxa marka uu la kulmo olol furan. Fiirsashada ethylene oxide ee sida caadiga ah loo isticmaalo si loo nadiifiyo loona nadiifiyo waa 400 ilaa 800 mg/L, kaas oo ku jira heerka gubashada iyo qaraxyada hawada, sidaa darteed waa in si taxaddar leh loo isticmaalaa.

Ethylene oxide waxaa lagu qasi karaa gaasaska aan firfircoonayn sidakaarboon laba ogsaydhsaamiga 1:9 si loo sameeyo isku-darka qaraxa u adkaysta, kaas oo ka ammaan badan jeermiska iyo jeermiska.Etylene oksaydhwaxay noqon kartaa polymerize, laakiin guud ahaan polymerization-ku waa gaabis wuxuuna inta badan ku dhacaa xaalad dareere ah. Isku darka ethylene oxide oo leh kaarboon laba ogsaydh ama hydrocarbons fluorinated, polymerization-ku wuxuu dhacaa si tartiib tartiib ah polymers-ka adagna uma badna inay qarxaan.

Mabda'a Jeermis-ka-saaridda Ethylene Oxide

1. Alkylation

Habka ficilkaoksaydh-ka ethyleneDilaaga noolaha kala duwan waxaa inta badan loo yaqaan alkylation. Goobaha ay ka shaqeeyaan waa sulfhydryl (-SH), amino (-NH2), hydroxyl (-COOH) iyo hydroxyl (-OH) oo ku jira borotiinka iyo molecules-ka asiidhka nukliyeer-ka. Ethylene oxide waxay sababi kartaa in kooxahan ay maraan falcelinta alkylation, taasoo ka dhigaysa macromolecules-kan bayoolojiga ah ee noolaha aan firfircoonayn, taasoo disha noolaha.

2. Joojinta dhaqdhaqaaqa enzymes-ka bayoolojiga

Ethylene oxide waxay joojin kartaa dhaqdhaqaaqa enzymes-ka kala duwan ee noolaha yaryar, sida phosphate dehydrogenase, cholinesterase iyo oxidases kale, taasoo caqabad ku ah dhammaystirka hababka dheef-shiid kiimikaadka caadiga ah ee noolaha yaryar waxayna horseeddaa dhimashadooda.

3. Saamaynta dilka ee noolaha yaryar

Labadabaoksaydh-ka ethyleneDareeraha iyo gaaska waxay leeyihiin saameyn xooggan oo dilaaga microbicidal ah. Marka la barbardhigo, saameynta dilaaga microbicidal ee gaaska ayaa ka xoog badan, gaaskeedana guud ahaan waxaa loo isticmaalaa jeermiska dila iyo nadiifinta.

Ethylene oxide waa nadiifiye ballaaran oo aad waxtar u leh kaas oo leh saameyn dil iyo joojin xooggan oo ku saabsan jirka faafinta bakteeriyada, unugyada bakteeriyada, fangaska, iyo fayrasyada. Marka ethylene oxide ay la kulanto noolaha yaryar, laakiin noolaha yaryar ay ku jiraan biyo ku filan, falcelinta u dhaxaysa ethylene oxide iyo noolaha yaryar waa falcelin caadi ah oo heerka koowaad ah. Qiyaasta joojisa noolaha saafiga ah ee la beeray, qalooca falcelinta waa xariiq toosan oo ku taal qiimaha nus-logarithmic.

Kala duwanaanshaha codsiga ee jeermiska ka-hortagga oksaydhka ethylene

Etylene oksaydhma waxyeeleeyo walxaha la jeermis dilay waxayna leedahay dalool xooggan. Inta badan walxaha aan ku habboonayn in la nadiifiyo iyadoo la adeegsanayo hababka guud waa la jeermis dili karaa oo lagu nadiifin karaa ethylene oxide. Waxaa loo isticmaali karaa in lagu nadiifiyo alaabta birta ah, endoscopes, dialyzers iyo aaladaha caafimaadka ee la tuuri karo, jeermis dilaha warshadaha iyo nadiifinta dharka kala duwan, alaabada balaastikada ah, iyo jeermis dilaha alaabta meelaha cudurrada faafa (sida dharka kiimikada ee fiber-ka, maqaarka, warqadda, dukumeentiyada, iyo rinjiyeynta saliidda).

Ethylene oxide ma dhaawacdo walxaha la jeermis dilay waxayna leedahay marin xooggan. Inta badan walxaha aan ku habboonayn in la nadiifiyo iyadoo la adeegsanayo hababka guud waa la jeermis dili karaa oo lagu nadiifin karaa ethylene oxide. Waxaa loo isticmaali karaa in lagu nadiifiyo alaabta birta ah, endoscopes, dialyzers iyo aaladaha caafimaadka ee la tuuri karo, jeermis dilaha warshadaha iyo nadiifinta dharka kala duwan, alaabada balaastikada ah, iyo jeermis dilaha alaabta meelaha cudurrada faafa (sida dharka kiimikada ee fiber-ka, maqaarka, warqadda, dukumeentiyada, iyo rinjiyeynta saliidda).

Arrimaha saameeya saameynta jeermiskaoksaydh-ka ethylene

Saamaynta jeermiska dila ee ethylene oxide waxaa saameeya arrimo badan. Si loo gaaro saameynta jeermiska dila ee ugu fiican, iyadoo si wax ku ool ah loo xakameeyo arrimo kala duwan, waxay si fiican uga ciyaari kartaa doorkeeda dila jeermiska dila oo ay ku gaarto ujeeddadeeda jeermiska dila iyo jeermiska dila. Arrimaha ugu muhiimsan ee saameeya saameynta jeermiska dila waa: uruurinta, heerkulka, qoyaanka qaraabada ah, waqtiga ficilka, iwm.