Emikhakheni yokukhiqiza kanye nesayensi yezinto zokwakha, ukuphishekela ukuthuthukisa ukukhanga kobuhle kanye nokusebenza kwemikhiqizo akupheli. Enye into entsha ethola ukuthandwa okukhulu ukusetshenziswa kwezibani zokukhanyisa ezibonakalayo, ikakhulukazi kumapulasitiki. Kodwa-ke, umbuzo ovame ukuvela ukuthi izibani zokukhanyisa ezibonakalayo zifana yini ne-bleach. Lesi sihloko sihlose ukucacisa la magama futhi sihlole imisebenzi yawo, ukusetshenziswa kwawo, kanye nomehluko wawo.

Kuyini i-optical brightener?

Izibani zokukhanya, eyaziwa nangokuthi ama-fluorescent whitening agents (FWA), ayizinhlanganisela ezimunca ukukhanya kwe-ultraviolet (UV) bese ziphinde zikhiphe njengokukhanya okuluhlaza okwesibhakabhaka okubonakalayo. Le nqubo yenza izinto zibonakale zimhlophe futhi zikhanya kakhulu emehlweni omuntu. Izibani zokukhanya zisetshenziswa ezimbonini eziningi, okuhlanganisa izindwangu, izihlanzi kanye nepulasitiki.

Uma kukhulunywa ngepulasitiki, ama-optical brighteners ayengezwa ngesikhathi senqubo yokukhiqiza ukuze kuthuthukiswe ukubukeka komkhiqizo wokugcina. Awusizo kakhulu ekwenzeni izinto zepulasitiki zibukeke zihlanzekile futhi zikhanya kakhudlwana, zivumela noma yikuphi ukuphuzi noma ukufiphala okungenzeka ngokuhamba kwesikhathi.

Zisebenza kanjani izibani zokukhanyisa ze-optical?

Isayensi ngemuva kwezibani zokukhanyisa ukukhanya isuka ekukhanyeni. Lapho ukukhanya kwe-ultraviolet kushaya ubuso bemikhiqizo yepulasitiki equkethe izibani zokukhanyisa ukukhanya, inhlanganisela imunca ukukhanya kwe-ultraviolet bese ikuphinda ikukhiphe njengokukhanya okuluhlaza okwesibhakabhaka okubonakalayo. Lokhu kukhanya okuluhlaza okwesibhakabhaka kukhansela noma yikuphi umthunzi ophuzi, okwenza ipulasitiki ibukeke imhlophe futhi ikhanya kakhulu.

Ukusebenza kahle kweizibani zokukhanyaKuncike ezintweni eziningana, okuhlanganisa uhlobo lwepulasitiki, ukuhlushwa kwe-brightener, kanye nokwakheka okuthile kwenhlanganisela. Izibani ezivamile zokukhanya ezisetshenziswa kumapulasitiki zifaka phakathi ama-stilbene derivatives, ama-coumarins nama-benzoxazoles.

Ukusetshenziswa kwama-ejenti amhlophe e-fluorescent kumapulasitiki

Izibani zokukhanyisa ezibonakalayo zisetshenziswa kabanzi emikhiqizweni yepulasitiki, okuhlanganisa:

1. Izinto Zokupakisha: Yenza ukupakisha kukhange kakhulu futhi kuthuthukise ukubukeka komkhiqizo ngaphakathi.

2. Izinto Zasekhaya: Njengezitsha, izitsha, ifenisha, njll., zigcina ukubukeka kuhlanzekile futhi kukhazimula.

3. Izingxenye Zezimoto: Thuthukisa ubuhle bezingxenye zangaphakathi nezangaphandle.

4. Izinto zikagesi: Qinisekisa ukuthi indlu nezinye izingxenye zayo zibukeka kahle futhi zinesitayela.

Ingabe izibani zokukhanyisa ziyafana ne-bleach?

Impendulo emfushane ithi cha; izibani zokukhanyisa ezibonakalayo kanye ne-bleach azifani. Nakuba zombili zisetshenziselwa ukuthuthukisa ukubukeka kwento ethile, zisebenza ngezindlela ezihlukene ngokuphelele futhi zifeza izinjongo ezihlukene.

Kuyini i-bleach?

I-Bleach iyinhlanganisela yamakhemikhali esetshenziswa kakhulu ekubulaleni amagciwane kanye nezakhiwo zokwenza mhlophe. Izinhlobo ezivame kakhulu ze-bleach yi-chlorine bleach (i-sodium hypochlorite) kanye ne-oxygen bleach (i-hydrogen peroxide). I-Bleach isebenza ngokuphula izibopho zamakhemikhali phakathi kwamabala nemibala, isusa ngempumelelo umbala ezintweni.

Umehluko Obalulekile Phakathi Kwezibani Ezikhanyayo Ne-Bleach

1. Indlela yokusebenza:

- I-Optical Brightener: Yenza izinto zibonakale zimhlophe futhi zikhanya ngokumunca imisebe ye-UV bese ziphinde ziyikhiphe njengokukhanya okuluhlaza okwesibhakabhaka okubonakalayo.

- I-Bleach: Isusa umbala ezintweni ngokuphula amabala nemibala ngamakhemikhali.

2. Inhloso:

- Ama-Fluorescent Whitening Ejenti: Asetshenziswa kakhulu ukuthuthukisa ukubukeka kwezinto ngokuzenza zibonakale zihlanzekile futhi zikhanya kakhudlwana.

- I-Bleach: Isetshenziselwa ukuhlanza, ukubulala amagciwane kanye nokususa amabala.

3. Isicelo:

- I-Fluorescent Whitening Agent: Isetshenziswa kakhulu kumapulasitiki, izindwangu kanye nemishini yokuhlanza.

- I-Bleach: Isetshenziswa emikhiqizweni yokuhlanza yasekhaya, ezinhlotsheni zokuwasha kanye nasezihlanzini zezimboni.

4. Ukwakheka Kwamakhemikhali:

- Izinto Zokumhlophe Ezikhanyayo: Ngokuvamile amakhemikhali e-organic afana nama-derivatives e-stilbene, ama-coumarins nama-benzoxazoles.

- I-Bleach: Amakhemikhali angaphili njenge-sodium hypochlorite (i-chlorine bleach) noma amakhemikhali e-organic njenge-hydrogen peroxide (i-oxygen bleach).

Izinto Okufanele Uzicabangele Zokuphepha Nezemvelo

Izibani zokukhanyakanye nama-bleach ngalinye linezinkinga zalo zokuphepha kanye nezemvelo. Ama-optical brighteners ngokuvamile abhekwa njengaphephile ukusetshenziswa emikhiqizweni yabathengi, kodwa kukhona ukukhathazeka ngokuqhubeka kwawo emvelweni kanye nemiphumela engaba khona empilweni yasemanzini. I-bleach, ikakhulukazi i-chlorine bleach, iyagqwala futhi ikhiqiza imikhiqizo eyingozi efana nama-dioxin, ayingozi empilweni yabantu kanye nasemvelweni.

Ekuphetheni

Nakuba izibani zokukhanyisa ezibonakalayo kanye ne-bleach zingase zibonakale zifana ngenxa yemiphumela yazo yokwenza mhlophe, izindlela zazo, izinhloso, kanye nokusetshenziswa kwazo kuhluke kakhulu. Izibani zokukhanyisa ezibonakalayo ziyizinto ezikhethekile ezisetshenziselwa ukuthuthukisa ukubukeka kwepulasitiki nezinye izinto ngokuzenza zibonakale zimhlophe futhi zikhanya kakhulu. Ngokuphambene nalokho, i-bleach iyisihlanzi esinamandla esisetshenziselwa ukususa amabala kanye nokubulala amagciwane ezindaweni.

Ukuqonda lo mehluko kubalulekile kubakhiqizi, abathengi, nanoma ubani ohilelekile kwisayensi yezinto zokwakha noma ekuthuthukisweni komkhiqizo. Ngokukhetha inhlanganisela efanele yokusetshenziswa okufanele, singafinyelela imiphumela yobuhle nokusebenza efiselekayo ngenkathi sinciphisa imiphumela emibi engaba khona empilweni nasemvelweni.