Hydroxypropyl methylcellulose, 28-30% methoxyl, 7-12% hydroxypropyl

Tilmaamaha "28-30% metoxyl" iyo "7-12% hydroxypropyl" waxay tixraacayaan heerka beddelkaHydroxypropyl Methylcellulose(HPMC). Qiimayaashani waxay muujinayaan ilaa xadka polymer-ka asalka ah ee cellulose lagu sameeyay kiimiko ahaan iyadoo la raacayo kooxaha methoxyl iyo hydroxypropyl.

1. 28-30% Methoxyl:
   • Tani waxay muujinaysaa, celcelis ahaan, 28-30% kooxaha asalka ah ee hydroxyl ee ku jira molecule cellulose ayaa lagu beddelay kooxo methoxyl ah. Kooxaha Methoxyl (-OCH3) ayaa loo soo bandhigay si loo kordhiyo hydrophobicity ee polymer-ka.
2. 7-12% Hydroxypropyl:
   • Tani waxay muujinaysaa, celcelis ahaan, 7-12% kooxaha asalka ah ee hydroxyl ee ku jira molecule cellulose ayaa lagu beddelay kooxaha hydroxypropyl. Kooxaha Hydroxypropyl (-OCH2CHOHCH3) ayaa loo soo bandhigay si kor loogu qaado milanka biyaha oo ay wax uga beddelaan sifooyinka kale ee jirka iyo kiimikaad ee polymerka.

Heerka beddelka ayaa saameeya sifooyinka HPMC iyo waxqabadkeeda codsiyada kala duwan. Tusaale ahaan:

• Maadada methoxyl ee sare waxay guud ahaan kordhisaa hydrophobicity-ka polymer-ka, taas oo saamaysa milmaheeda biyaha iyo sifooyinka kale.
• Mawduuca sare ee hydroxypropyl wuxuu wanaajin karaa milanka biyaha iyo sifooyinka filim samaynta ee HPMC.

Tilmaamahan ayaa muhiim u ah dawaynta HPMC si ay u buuxiso shuruudaha gaarka ah ee warshadaha kala duwan. Tusaale ahaan, warshadaha dawooyinka, doorashada darajada HPMC oo leh darajooyin gaar ah oo beddelaad ah waxay saamayn kartaa muuqaalada siidaynta daroogada ee qaabaynta kiniinka. Warshadaha dhismaha, waxay saameyn ku yeelan kartaa haynta biyaha iyo waxyaabaha ku dheggan ee alaabta sibidhka ku salaysan.

Soo-saareyaashu waxay soo saaraan darajooyin kala duwan oo HPMC ah oo leh heerar kala duwan oo beddel ah si ay u daboolaan baahiyaha kala duwan ee codsiyada kala duwan. Marka la isticmaalayo HPMC qaab-dhismeedka, waxaa muhiim u ah hab-sameeyayaasha inay tixgeliyaan darajada gaarka ah ee HPMC ee la jaanqaadeysa sifooyinka la doonayo iyo sifooyinka waxqabadka codsiga loogu talagalay.