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

Tilmaamaha "28-30% methoxyl" iyo "7-12% hydroxypropyl" waxay tilmaamayaan heerka beddelka ee ku jiraHydroxypropyl Methylcellulose(HPMC). Qiimayaashani waxay muujinayaan heerka uu polymer-kii asalka ahaa ee cellulose-ka si kiimiko ah loogu beddelay kooxaha methoxyl iyo hydroxypropyl.

1. 28-30% Methoxyl:
   • Tani waxay muujinaysaa in, celcelis ahaan, 28-30% kooxaha hydroxyl ee asalka ah ee ku jira molecule-ka lagu beddelay kooxaha methoxyl. Kooxaha Methoxyl (-OCH3) ayaa la soo bandhigay si loo kordhiyo hydrophobicity-ga polymer-ka.
2. 7-12% Hydroxypropyl:
   • Tani waxay muujinaysaa in, celcelis ahaan, 7-12% kooxaha hydroxyl ee asalka ah ee ku jira molecule-ka lagu beddelay kooxaha hydroxypropyl. Kooxaha Hydroxypropyl (-OCH2CHOHCH3) ayaa la soo bandhigayaa si loo xoojiyo milmida biyaha loona beddelo sifooyinka kale ee jireed iyo kiimikada ee polymer-ka.

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

• Maaddada methoxyl ee sareysa guud ahaan waxay kordhisaa hydrophobic-ga polymer-ka, taasoo saameynaysa milmida biyaha iyo sifooyinka kale.
• Maaddada hydroxypropyl oo sareysa waxay kor u qaadi kartaa milmida biyaha iyo sifooyinka sameynta filimada ee HPMC.

Tilmaamahan ayaa muhiim u ah habaynta HPMC si ay u buuxiso shuruudaha gaarka ah ee warshadaha kala duwan. Tusaale ahaan, warshadaha dawooyinka, doorashada heerka HPMC oo leh darajooyin gaar ah oo beddelka ah ayaa saameyn kara astaamaha sii deynta daawada ee ku jira qaacidooyinka kiniiniga. Warshadaha dhismaha, waxay saameyn kartaa haynta biyaha iyo sifooyinka dhegdhegga ee alaabada ku salaysan sibidhka.

Soosaarayaashu waxay soo saaraan darajooyin kala duwan oo HPMC ah oo leh darajooyin kala duwan oo beddel ah si loo daboolo baahiyaha kala duwan ee codsiyada kala duwan. Marka la isticmaalayo HPMC qaacidooyinka, waxaa muhiim ah in qaacideeyayaashu ay tixgeliyaan heerka gaarka ah ee HPMC kaas oo la jaanqaadaya sifooyinka la rabo iyo astaamaha waxqabadka ee loogu talagalay codsiga loogu talagalay.