Cellulose ethers da kuma hanyar da ake bi don samar da su

Samar daƙwayoyin celluloseya ƙunshi jerin gyare-gyaren sinadarai ga cellulose, wanda ke haifar da abubuwan da aka samo asali tare da halaye na musamman. Ga taƙaitaccen bayani game da hanyoyin da ake amfani da su don samar da cellulose ethers:

1. Zaɓin Tushen Cellulose:

• Ana iya samun ƙwayoyin cellulose daga tushe daban-daban kamar ɓangaren itacen, layukan auduga, ko wasu kayan da aka yi da tsire-tsire. Zaɓin tushen cellulose na iya shafar halayen samfurin ether na ƙarshe na cellulose.

2. Turare:

• Tushen cellulose yana yin bulbula don ya wargaza zare zuwa siffar da ta fi sauƙi. Ana iya samun bulbula ta hanyar injiniya, sinadarai, ko haɗin hanyoyin biyu.

3. Tsarkakewa:

• Ana yin amfani da sinadarin cellulose mai pulped wajen tsarkakewa don cire ƙazanta, lignin, da sauran abubuwan da ba su da cellulosic. Tsaftacewa yana da mahimmanci don samun kayan cellulose masu inganci.

4. Kunna Cellulose:

• Ana kunna cellulose mai tsabta ta hanyar kumbura shi a cikin ruwan alkaline. Wannan matakin yana da mahimmanci don sa cellulose ya zama mai amsawa yayin amsawar etherification na gaba.

5. Amsar Etherification:

• Cellulose da aka kunna yana fuskantar etherification, inda aka gabatar da ƙungiyoyin ether zuwa ga ƙungiyoyin hydroxyl akan sarkar polymer ta cellulose. Abubuwan da aka fi sani da etherifying sun haɗa da ethylene oxide, propylene oxide, sodium chloroacetate, methyl chloride, da sauransu.
• Yawanci ana gudanar da martanin ne a ƙarƙashin yanayin zafi, matsin lamba, da pH don cimma matakin maye gurbin da ake so (DS) da kuma guje wa halayen da ba su dace ba.

6. Tsaftacewa da Wankewa:

• Bayan amsawar etherification, sau da yawa ana cire samfurin daga jiki don cire abubuwan da suka wuce gona da iri ko kuma abubuwan da suka rage. Ana yin matakan wankewa na gaba don kawar da sauran sinadarai da ƙazanta.

7. Busarwa:

• Ana busar da cellulose mai tsabta da kuma ethered don samun samfurin cellulose ether na ƙarshe a cikin foda ko siffar granular.

8. Kula da Inganci:

• Ana amfani da dabarun nazari daban-daban, ciki har da na'urar auna maganadisu ta nukiliya (NMR), na'urar auna infrared ta Fourier-transform (FTIR), da kuma na'urar auna chromatography, don kula da inganci. Ana sa ido sosai kan na'urar auna DS don tabbatar da daidaito.

9. Tsarin da Amfani:

• Sannan ana ƙera cellulose ether zuwa matakai daban-daban don biyan buƙatun takamaiman aikace-aikace daban-daban. Ana amfani da cellulose ethers daban-daban don masana'antu daban-daban, kamar gini, magunguna, abinci, rufin rufi, da sauransu.

Yana da mahimmanci a lura cewa takamaiman hanyoyi da yanayi na iya bambanta dangane da samfurin cellulose ether da ake so da kuma aikace-aikacen da aka yi niyya. Sau da yawa masana'antun suna amfani da hanyoyin mallakar kansu don samar da cellulose ethers tare da takamaiman halaye waɗanda aka tsara don biyan buƙatun masana'antu daban-daban.