Focus on Cellulose ethers

Hydroxypropyl methylcellulose HPMC dhibaatada heerkulka jel

Marka la eego dhibaatada heerkulka jel ee hydroxypropyl methylcellulose HPMC, isticmaaleyaal badan ayaa dhif u ah inay fiiro gaar ah u yeeshaan dhibaatada heerkulka jel ee hydroxypropyl methylcellulose. Maalmahan, hydroxypropyl methylcellulose guud ahaan waxaa lagu kala soocaa iyadoo loo eegayo viscosity, laakiin qaar ka mid ah bay'ada gaarka ah iyo warshadaha gaarka ah, kuma filna oo kaliya inay ka tarjumayso viscosity alaabta. Kuwa soo socda ayaa si kooban u soo bandhigaya heerkulka jel ee hydroxypropyl methylcellulose.

Qadarka kooxda methoxyl waxay si toos ah ula xiriirtaa heerka dheecaanka cellulose, iyo waxa ku jira kooxda methoxyl waxaa lagu hagaajin karaa iyada oo la xakameynayo caanaha, heerkulka falcelinta iyo waqtiga falcelinta. Isla mar ahaantaana, heerka firfircooni-la'aantu waxay saamaysaa heerka beddelka hydroxyethyl ama hydroxypropyl. Sidaa darteed, haynta biyaha ee ether cellulose leh heerkulka jel sare waxay noqon doontaa mid liidata. Habka wax-soo-saarkani wuxuu u baahan yahay in la sahamiyo, markaa maaha in qiimaha wax soo saarka ee ether-ka cellulose uu hooseeyo haddii maadada methoxy ay hooseyso, liddi ku ah, qiimaha ayaa noqon doona mid sare.

Heerkulka jelka waxaa go'aamiya kooxaha methoxyl, haynta biyahana waxaa go'aamiya kooxaha hydroxypropoxyl. Waxaa jira saddex kooxood oo kaliya oo la beddeli karo oo ku jira cellulose. Soo hel heerkulka isticmaalka ku habboon, haynta biyaha ku habboon, ka dibna go'aami qaabka cellulosekan.

Heerkulka jelku waa barta muhiimka ah ee isticmaalka etherka cellulose. Marka heerkulka deegaanku uu dhaafo heerkulka jelka, etherka cellulose-ka ayaa laga sooci doonaa biyaha oo lumin doonaa haynta biyaha. Heerkulka gel ee ether-ka cellulose ee suuqa ayaa asal ahaan dabooli kara baahida deegaanka isticmaalka hoobiye (marka laga reebo deegaanno gaar ah). Markaad codsanayso hoobiye, ma jirto baahi loo qabo in fiiro gaar ah loo yeesho tusmada waxqabadka heerkulka jel.


Waqtiga boostada: Abriil-04-2023
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