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

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

Mafotokozedwe a "28-30% methoxyl" ndi "7-12% hydroxypropyl" amatanthauza kuchuluka kwa m'maloHydroxypropyl methylcellulose(HPMC). Izi zikuwonetsa momwe polima yoyambirira ya cellulose idasinthidwa ndimagulu a methoxyl ndi hydroxypropyl.

  1. 28-30% Methoxyl:
    • Izi zikusonyeza kuti, pafupifupi, 28-30% ya magulu oyambirira a hydroxyl pa molekyulu ya cellulose asinthidwa ndi magulu a methoxyl. Magulu a Methoxyl (-OCH3) amayambitsidwa kuti awonjezere hydrophobicity ya polima.
  2. 7-12% ya Hydroxypropyl:
    • Izi zikutanthawuza kuti, pafupifupi, 7-12% ya magulu oyambirira a hydroxyl pa molekyulu ya cellulose alowetsedwa ndi magulu a hydroxypropyl. Magulu a Hydroxypropyl (-OCH2CHOHCH3) amayambitsidwa kuti apititse patsogolo kusungunuka kwamadzi ndikusintha zina zakuthupi ndi zamankhwala za polima.

Mlingo wolowa m'malo umakhudza katundu wa HPMC ndi magwiridwe antchito osiyanasiyana. Mwachitsanzo:

  • Kuchuluka kwa methoxyl nthawi zambiri kumawonjezera hydrophobicity ya polima, zomwe zimakhudza kusungunuka kwake m'madzi ndi zina.
  • Ma hydroxypropyl apamwamba amatha kupangitsa kuti madzi asungunuke komanso kupanga mafilimu a HPMC.

Izi ndizofunikira pakukonza HPMC kuti ikwaniritse zofunikira m'mafakitale osiyanasiyana. Mwachitsanzo, m'makampani opanga mankhwala, kusankha kwa kalasi ya HPMC yokhala ndi magawo enaake olowa m'malo kungakhudze mbiri yotulutsa mankhwala pamapangidwe a piritsi. M'makampani omanga, zimatha kukhudza kusungidwa kwa madzi ndi kumamatira kwa zinthu zopangidwa ndi simenti.

Opanga amapanga magiredi osiyanasiyana a HPMC okhala ndi magawo osiyanasiyana osinthira kuti akwaniritse zosowa zosiyanasiyana zamagwiritsidwe osiyanasiyana. Mukamagwiritsa ntchito HPMC pamapangidwe, ndikofunikira kuti opanga aganizire za mtundu wa HPMC womwe umagwirizana ndi zomwe mukufuna komanso magwiridwe antchito azomwe akufuna.


Nthawi yotumiza: Jan-22-2024