Maxaa laga sameeyaa hypromellose?
Hypromellose, oo sidoo kale loo yaqaan hydroxypropyl methylcellulose (HPMC), waa polymer synthetic ah oo laga soo qaatay cellulose. Waxaa lagu sameeyaa iyadoo si kiimiko ah wax looga beddelayo cellulose dabiiciga ah oo laga helo saxarka alwaax ama fiilooyinka suufka iyada oo loo marayo habka loo yaqaan etherification. Nidaamkan, fiilooyinka cellulose waxaa lagu daaweeyaa isku-darka propylene oxide iyo methyl chloride, taas oo horseedaysa in lagu daro kooxaha hydroxypropyl iyo methyl molecules cellulose.
Alaabta ka soo baxday waa polymer-ka biyaha lagu milmo taaso loo isticmaalo codsiyo kala duwan, oo ay ku jiraan dawooyinka, waxyaalaha la isku qurxiyo, alaabta cuntada, iyo kaabista cuntada. Hypromellose waxaa lagu heli karaa darajooyin kala duwan, oo leh miisaanyo kala duwan oo unugyo iyo darajooyin beddel ah, iyadoo ku xiran isticmaalka loogu talagalay.
Guud ahaan, hypromellose waxaa loo tixgeliyaa inay tahay walxo badbaado leh oo si wanaagsan loo dulqaadan karo marka loo isticmaalo sida lagu faray. Waxaa caadi ahaan loo isticmaalaa sida wakiilka dahaarka, wakiilka dhumucdiisuna, iyo xasiliye ee badeecooyin badan oo waxaa lagu qiimeeyaa awooddeeda si ay u wanaajiso xasiloonida alaabta, kordhiyo viscosity, iyo kor loogu qaado waxqabadka alaabta.
Waqtiga boostada: Mar-04-2023