Khaub ncaws -nws yog ib qho tseem ceeb tshaj plaws ntawm lub neej niaj hnub. Ntawm ntau yam khoom siv rau kev ntxhua khaub ncaws, ntxhua khaub ncaws hmoov tau ntev tuav txoj haujlwm tseem ceeb. Txawm li cas los xij, cov neeg siv kev soj ntsuam yuav pom tias cov khoom xyaw tseem ceeb hauv cov kua ntxhua khaub ncaws tsis yog - ionic surfactants; cov no muaj zog tu lub zog thiab muaj peev xwm nkag mus tob rau hauv cov khaub ncaws fibers los ua lawv cov kev tu, uas ua rau muaj kev tshem tawm ntau dua ntawm cov stains.
Thaum siv, ntxhua khaub ncaws hmoov tsis tas yuav yaj tag; residual particles tuaj yeem yooj yim ua rau cov ntaub puas thiab nyuaj rau yaug tawm. Hauv qhov sib piv, cov tshuaj ntxhua khaub ncaws ua kua ua kom yaj tag nrho- thiab sai sai ntawm qhov ntawd - ua kom yooj yim rau yaug tawm thiab ntxuav tawm yam tsis muaj kev puas tsuaj rau daim tawv nqaij lossis khaub ncaws.
Yog li, qhov twg yog qhov zoo dua: ntxhua khaub ncaws hmoov lossis kua xab npum? Nws hloov tawm qhov sib txawv yog qhov tseem ceeb- thiab ntau tus neeg tau siv qhov tsis ncaj ncees lawm ib puag ncig.
Cov hmoov ntxhua khaub ncaws feem ntau muaj zog alkaline (nrog pH siab tshaj 12), yuav tsum siv cov hnab looj tes thaum ntxuav kom txo cov tawv nqaij khaus. Cov tshuaj ntxhua khaub ncaws ua kua, ntawm qhov tod tes, muaj pH tus nqi ze rau qhov nruab nrab, muaj cov mis mos uas zoo rau tes.
Cov tshuaj ntxhua khaub ncaws ua kua ua ke nrog cov cuab yeej siv siab tshaj plaws, ua kom yooj yim rau infuse nrog ntau yam khoom xyaw. Nws tso cov khaub ncaws zoo li fluffy, mos, thiab du nrog lub ntsej muag ci, thaum tseem muab cov tshuaj tua kab mob thiab ntev - cov tshuaj tsw qab. Muab nws tus nqi qis dua ntawm kev siv, nws tau txais kev lees paub dav dav ntawm cov neeg siv khoom.
Cov dej khib nyiab tsim los ntawm cov hmoov ntxhua khaub ncaws yog qhov nyuaj rau degrade ib txwm muaj (tshwj xeeb tshaj yog cov ceg ntoo -chain sodium alkylbenzene sulfonates), ua rau dej muaj kuab paug thiab ua rau muaj kev puas tsuaj loj rau ecological. Cov tshuaj ntxhua khaub ncaws ua kua, hloov pauv, ua kom tiav degradation, yog li ua rau muaj kev phom sij tsawg dua rau ib puag ncig.