1. Cellulose wachilengedwe
Zopangira zoyambira zaHpmcCellulose wachilengedwe, womwe nthawi zambiri umachokera ku mitengo yamtengo wapatali kapena ya thonje. Mitundu yachilengedwe iyi yachilengedwe imakhala ndi mapangidwe a β-shuga ndipo maziko opanga hpmc. Madzi oyeza bwino kwambiri omwe amatayeza pa celton nthawi zambiri amagwiritsidwa ntchito popanga hpmc wapamwamba chifukwa chodetsa.
2. Sodium Hydroxide (Naoh)
Sodium hydroxide (Naoh) amafunikira kuti akhazikitsidwe ndi kupendekera kwa cellulose. Ntchito zake zazikulu zikuphatikiza:
Kutupika ma mamolekyulu ndi zochitika zowonjezera;
Kuwononga dera la crystaline la cellulose kuti likhale losavuta kuthana ndi zidziwitso;
Kupititsa patsogolo methislation ndi hydroxypropropropropropropropropropropropropropy.
3. Methyl chloride (ch₃cl)
Methyl chloride (methyl chloride) ndi yotsimikizika yofunikira ya methylation ngati kimacell®hpmc popanga. Zimachita ndi cellulose yoyaka kuti isinthe magulu ena a hydroxyl (-Oh) ndi methoxy magulu (-Och₃) kuti apangemethyl cellulose (MC), potero kukonza solubility ndi matupi ndi mankhwala a cellulose.
4. Propyyne oxide (C₃h₆o)
Propyyne oxide imagwiritsidwa ntchito mu hydroxypropropropropropropropropropropropropropropropropropropropy Kukhazikitsidwa kwa hydroxypropyl ikhoza:
Kupititsa patsogolo madzi osungunuka a HPMC;
Sinthani mawilo am'matumba ndi nkhanza za njira yake yankho;
Kukonza kukhazikika kwake pamatenthedwe osiyanasiyana.
5. zosungunulira (madzi kapena zosungunulira)
Madzi kapena zosungunulira (monga Isoppanol, methanol, etc.) amagwiritsidwa ntchito ngati momwe amathandizira pakupanga kusakanikirana kwa zinthu ndi kuwongolera. Kuphatikiza apo, ma sols ena amagwiritsidwa ntchito pochotsa zinthu zosakwanira pazowonjezera ndikutsuka kuti zitsimikizire kuyera kwa malonda.
6. Acidic kapena alkaline
Kuti muchepetse mikhalidwe yolimbitsa thupi komanso kusintha kwa cantily kapena alkalines aldium bicarbonate (nahco₃) kapena sulfuric acid njira yopanga pH kuti ithetse mikhalidwe yabwino.
7.. Zina zothandizira
Okhazikika ena, zoletsa kapena zowonjezera zina zamankhwala zitha kugwiritsidwa ntchito popanga hpmc, zomwe zimapangitsa kukhazikika kwake, ndikuwongolera mphamvu zake zakuthupi ndi mankhwala.
Kimacell®hpmc imapangidwa ndi alkalization, methylation ndi hydroxyproproproprose ya cellulose zachilengedwe.Zida zake zazikulu zimaphatikizapo:
Cellulose wachilengedwe (makamaka kuchokera ku mitengo yamitengo kapena yoyenga yoyenga)
Sodium hydroxide (Naoh) (kwa alkalization)
Methyl chloride (ch₃cl) (ku methylation)
Prompyne oxide (C₃h₆o) (kwa hydroxypylaty)
Madzi kapena zosungunuka (zokhudzana ndi kuchapa)
Matatalysts ndi okhazikika (kuti athetseretu)
HPMC imagwiritsidwa ntchito kwambiri m'mafakitale ambiri monga mankhwala, zomangamanga, chakudya, ndi zokutira chifukwa cha kuthekera kwa madzi abwino komanso kupanda mawonekedwe.
Post Nthawi: Feb-11-2025