Waa maxay noocyada kala duwan ee Cellulose ether?

Cellulose ethers waa koox kala duwan oo polymers ah oo laga soo qaatay cellulose, polysaccharide dabiici ah oo laga helo dhirta. Waxaa si weyn loogu isticmaalaa warshado kala duwan, oo ay ku jiraan dhismaha, daawooyinka, cuntada, qurxinta, iyo daryeelka shaqsiga ah, sababtoo ah sifooyinkooda gaarka ah iyo kala duwanaanshahooda. Waa kuwan qaar ka mid ah noocyada ugu badan ee cellulose ether:

1. Methyl Cellulose (MC):
   • Methyl cellulose waxaa lagu soo saaraa iyadoo lagu daweynayo cellulose methyl chloride si loogu soo bandhigo kooxaha methyl laf-dhabarta cellulose.
   • Waa mid ku milma biyaha qabow waxayna samaysaa xalal cad oo aan dhalaal lahayn.
   • MC waxaa loo isticmaalaa sidii dhumuc-dhegeeye, xidhe, iyo xasiliye codsiyo kala duwan, oo ay ku jiraan qalabka dhismaha (tusaale ahaan, hoobiyeyaal ku salaysan sibidhka, plasters-ka ku salaysan gypsum), cuntooyinka, daawooyinka, iyo walxaha daryeelka shakhsi ahaaneed.
2. Haydroxyethyl Cellulose (HEC):
   • Hydroxyethyl cellulose waxaa lagu sameeyaa iyadoo la falgalayo cellulose iyadoo la adeegsanayo ethylene oxide si loogu soo bandhigo kooxaha hydroxyethyl laf-dhabarta cellulose.
   • Waa mid ku milma biyaha qabow waxayna sameysaa xalal cad oo aan miridh lahayn oo leh sifooyin haynta biyaha oo aad u fiican.
   • HEC waxaa badanaa loo isticmaalaa sidii wax lagu dhejiyo, wax ka beddela rheology-ga, iyo wakiil sameeya filimada rinjiga, dhejisyada, alaabada daryeelka shaqsiga ah, iyo daawooyinka.
3. Cellulose-ka Hydroxypropyl Methyl (HPMC):
   • Hydroxypropyl methyl cellulose waxaa lagu soo saaraa iyadoo la soo gelinayo kooxaha hydroxypropyl iyo methyl ee laf-dhabarta cellulose.
   • Waxay muujisaa sifooyin la mid ah methyl cellulose iyo hydroxyethyl cellulose, oo ay ku jiraan milmida biyaha, awoodda sameynta filimada, iyo haynta biyaha.
   • HPMC waxaa si weyn loogu isticmaalaa agabka dhismaha (tusaale ahaan, dhejisyada taayirada, qalabka ku salaysan sibidhka, isku-dhafka is-dheellitirka), iyo sidoo kale daawooyinka, cuntooyinka, iyo walxaha daryeelka shakhsi ahaaneed.
4. Kaarboxymethyl cellulose (CMC):
   • Carboxymethyl cellulose waxaa laga soo saaraa cellulose iyadoo lagu daaweynayo sodium hydroxide iyo monochloroacetic acid si loogu soo bandhigo kooxaha carboxymethyl.
   • Waa mid ku milma biyaha waxayna sameysaa xalal cad oo aan miridh lahayn oo leh sifooyin aad u fiican oo dhumuc leh, xasilin kara, iyo haysashada biyaha.
   • CMC waxaa badanaa loo isticmaalaa sidii wax ka beddele dhumuc leh, isku xidh, iyo rheology-ga alaabada cuntada, daawooyinka, dharka, warqadda, iyo qaar ka mid ah agabka dhismaha.
5. Ethyl Cellulose (EC):
   • Ethyl cellulose waxaa la soo saaraa iyadoo la falgalo cellulose oo leh ethyl chloride si loogu soo bandhigo kooxaha ethyl laf-dhabarta cellulose.
   • Waa mid aan ku milmin biyaha laakiin ku milma dareerayaasha dabiiciga ah sida ethanol iyo kloroform.
   • EC waxaa badanaa loo isticmaalaa sidii wakiil sameeya filimada, xidhmo, iyo walxo dahaar ah oo lagu sameeyo daawooyinka, cuntooyinka, qurxinta, iyo codsiyada warshadaha.

Kuwani waa qaar ka mid ah noocyada ugu badan ee loo isticmaalo cellulose ether, mid walbana wuxuu bixiyaa sifooyin iyo faa'iidooyin gaar ah oo loogu talagalay codsiyada kala duwan. Ethers cellulose gaar ah oo kale ayaa sidoo kale jiri kara, kuwaas oo loo habeeyey shuruudo gaar ah oo ku jira warshado kala duwan.