Yadda ake yin Colloids
Ma'anar Colloid
Colloid cakude ne daban-daban wanda wani abu ke warwatse a cikin wani abu a cikin nau'in ƙananan ƙwayoyin cuta. Girman ƙwayoyin cuta a cikin colloids yawanci yana tsakanin nanometer 1 zuwa 1000, don haka ba za a iya ganin ƙwayoyin cuta da ido tsirara ba amma ana iya ganin su da na'urar hangen nesa ta lantarki. Colloids suna da siffa ta musamman saboda ƙwayoyin da aka warwatse ba sa zama kuma suna ci gaba da kasancewa a ko'ina cikin hanyar da ke warwatsewa. Wannan lamari yana faruwa ne sakamakon motsin Brownian, inda ƙwayoyin colloidal ke ci gaba da motsawa bazuwar saboda karo da ƙwayoyin ƙwayoyin cuta na hanyar da aka warwatse su.
Nau'ikan Colloids
Ana iya rarraba Colloids bisa ga matakin watsawa da kuma yanayin watsawa. Wasu nau'ikan colloids da aka saba amfani da su sun haɗa da:
1. Solution: Ƙwayoyin da aka watsa a cikin ruwa. Misalan: fenti, tawada.
2. Emulsion: Cakuda ruwa biyu waɗanda ba sa narkewa a junansu. Misali: madara, mayonnaise.
3. Iskar Gas: Ƙwayoyin datti ko ruwa da aka watsa a cikin iskar gas. Misalan: hazo, hayaƙi.
4. Gel: Tsarin colloidal wanda ke da tsari mai kama da layi/tsarin layi saboda haɗin gwiwar ƙwayoyin halitta masu ƙarfi a cikin wani ruwa mai ruwa. Misalan: jelly, agar-agar.
5. Kumfa: Iskar gas da aka watsa a cikin ruwa ko mai ƙarfi. Misalan: sabulun sabulu, man aski.
Hanyar Yin Colloid
Ana iya yin Colloids ta amfani da manyan hanyoyi guda biyu, wato hanyar watsawa da kuma hanyar daskarewar iska.
Hanyar Watsawa
Hanyar watsawa tsari ne da ake niƙa manyan ƙwayoyin cuta zuwa ƙwayoyin colloidal. Ga hanyoyi da dama na ƙirƙirar ƙwayoyin colloid ta amfani da hanyar watsawa:
1. Haɗaka
Haɗakarwa tsari ne na inji wanda ake niƙa manyan ƙwayoyin cuta zuwa ƙananan ƙwayoyin cuta ta amfani da ƙarfin injina kamar gogayya ko matsin lamba mai yawa. Ana amfani da wannan tsari sosai a masana'antar abinci don samar da kayayyaki kamar madara ko miya mai kama da juna.
2. Hana yin fitsari
Tsarin narkewar ƙwayoyin cuta (peptization) tsari ne na rarraba manyan ƙwayoyin cuta zuwa ƙwayoyin colloidal ta amfani da sinadarin peptizing. Wannan sinadarin peptizing yana taimakawa wajen rarraba manyan ƙwayoyin cuta zuwa ƙananan ƙwayoyin cuta waɗanda aka watsa a cikin wani abu mai kama da ruwa. Misali, yumbu a cikin ruwa tare da taimakon wasu sinadarai masu kama da electrolytes.
3. Ultrasonication
Wannan dabarar tana amfani da raƙuman ultrasonic don karya manyan ƙwayoyin cuta zuwa ƙwayoyin colloidal. Raƙuman ultrasonic suna aika ƙarfi mai yawa ga ƙwayoyin, wanda ke sa su ruguje zuwa ƙananan ƙwayoyin cuta.
Hanyar Dankalin Tururi
Hanyar daskarewa tsari ne da ƙananan ƙwayoyin cuta ke haɗuwa (condensate) don samar da ƙwayoyin colloidal. Wannan hanyar ta haɗa da dabaru da dama, waɗanda suka haɗa da:
1. Halayen Sinadarai
Ana iya amfani da halayen sinadarai don samar da ƙwayoyin colloidal daga ƙananan ƙwayoyin halitta. Wasu misalan halayen sinadarai da aka yi amfani da su sune hydrolysis, oxidation-reduction, da precipitation. Misali:
– Hydrolysis: FeCl3 idan aka ƙara shi a ruwa yana haifar da hydrolysis don samar da colloidal Fe(OH)3.
– Iskar Oxidation: Iskar H2S tana narkewa da iskar SO2 don samar da sinadarin colloidal sulfur.
– Ragewa: Ana canza maganin AgNO3 zuwa azurfa ta colloidal ta hanyar rage shi da NaBH4.
2. Sauyawar Maganin Datti
Wannan hanyar ta ƙunshi canza sinadarin da ke narkewa a cikinsa kamar ƙwayoyin colloidal. Canje-canje a cikin yanayin zafi ko kuma yanayin zafi na iya haifar da samuwar ƙwayoyin colloidal.
3. Hanyar Sol-Gel
Hanyar sol-gel wata dabara ce da ta ƙunshi sol (lokacin ruwa) wanda daga nan ya samar da hanyar sadarwa mai ƙarfi ko gel. Sau da yawa ana amfani da wannan tsari wajen ƙera kayan yumbu da gel ɗin silica.
Misalan Yin Colloid
Ga matakan da ake bi wajen yin colloid ta amfani da hanyoyin da ke sama.
Shiri na Iron(III) Hydroxide (Fe(OH)3) Sol
1. A shirya maganin FeCl3 da ruwan da aka tace a cikin kwano.
2. Sai a zuba ruwan FeCl3 a hankali a cikin ruwan yayin da ake ci gaba da juyawa.
3. FeCl3 zai yi hydrolysis don samar da Fe(OH)3 a matsayin ƙwayoyin colloidal jajaye:
\[
FeCl_3 + 3H_2O → Fe(OH)_3 + 3HCl
\]
4. Ci gaba da jujjuya hadin har sai ya daidaita kuma ya samar da barbashi masu karko na colloidal.
Yin Colloidal Sulfur
1. Shirya mafita guda biyu: maganin sodium thiosulfate (Na2S2O3) da kuma maganin hydrochloric acid (HCl) guda ɗaya a cikin tasoshin jini daban-daban.
2. Haɗa sinadarin sodium thiosulfate da HCl a cikin jirgin ruwa mai amsawa:
\[
Na_2S_2O_3 + 2HCl → 2NaCl + SO_2 + S + H_2O
\]
3. Wannan amsawar tana samar da sulfur (S) a matsayin colloid a cikin wani ruwa mai ruwa.
Yin Azurfa ta Colloidal (Ag)
1. Shirya maganin AgNO3 da kuma wani abu mai rage kiba kamar NaBH4.
2. A haɗa maganin AgNO3 da NaBH4 a cikin kwalbar amsawa yayin da ake ci gaba da juyawa:
\[
AgNO_3 + NaBH_4 → Ag (colloid) + NaNO_3 + H_2
\]
3. Wannan cakuda zai samar da launin rawaya ko launin toka na colloidal azurfa.
Yin Madara-Soda Emulsion
1. A shirya madarar ruwa da soda (abin sha mai kauri).
2. A haɗa madara da soda a cikin kwalbar gilashi ko kwalba a cikin rabon da ake so.
3. A girgiza hadin sosai har sai ya yi santsi. Samuwar kumfa yana nuna kasancewar wani abu mai kauri.
Abubuwan da ke haifar da daidaiton Colloidal
Kwanciyar hankali na Colloid yana da tasiri sosai ta hanyar hulɗar da ke tsakanin ƙwayoyin colloid da kuma hanyar watsawa, waɗannan abubuwa masu zuwa:
– Cajin Wutar Lantarki
Kwayoyin Colloidal gabaɗaya suna da irin wannan cajin lantarki, wanda ke haifar da turewa tsakanin ƙwayoyin. Wannan yana taimakawa wajen hana ƙwayoyin colloidal haɗuwa (coagulation).
- Mai Kare Colloidal
Amfani da magungunan kariya daga colloidal, waɗanda abubuwa ne da za su iya shafa ƙwayoyin colloidal don daidaita su da kuma hana su taruwa. Misalan sun haɗa da gelatin, PVA, da sauran magungunan kariya.
- Motsin Brownian
Motsin bazuwar ƙwayoyin colloidal da ke faruwa sakamakon karo tsakanin ƙwayoyin halittar da ke warwatsewa. Wannan motsi yana taimakawa wajen rarraba ƙwayoyin colloidal daidai gwargwado.
- Shafar ion
Barbashi na Colloidal na iya sha ions daga wurin da ke warwatsewa, yana ƙara kwanciyar hankali na colloidal ta hanyar ƙara yawan caji a saman.
Aikace-aikacen Colloid
Ana amfani da Colloids sosai a fannoni daban-daban na masana'antu da aikace-aikacen yau da kullun, gami da:
- Abinci da Abin Sha
Ana amfani da Colloids a cikin kayayyakin abinci da abubuwan sha daban-daban kamar ice cream, miya, ruwan 'ya'yan itace, da kayayyakin kiwo.
– Magani
Shirye-shiryen magunguna kamar su man shafawa, man shafawa, da kuma dakatarwa sune nau'ikan colloidal waɗanda ke taimakawa wajen fitar da magunguna da kuma sha su yadda ya kamata.
– Kayan kwalliya
Kayayyakin kwalliya kamar su man shafawa, man shafawa, da shamfu sune watsuwar colloidal waɗanda ke samar da yanayin da ake so.
– Masana'antar Fenti da Tawada
Ana amfani da Colloids wajen ƙera fenti da tawada don samun kyakkyawan yaɗuwar launi da kwanciyar hankali na samfur.
– Maganin Ruwa
Tsarin coagulation da flocculation a cikin maganin ruwa yana amfani da ƙa'idar colloid don tayar da ƙananan ƙwayoyin cuta a cikin ruwa.
Da fahimtar tsarin kera da halayen colloids, za mu iya inganta amfani da su a fannoni daban-daban. Samar da colloid yana buƙatar dabarun da suka dace don samar da samfuran colloid masu ƙarfi da inganci.
