Kodi HPMC ndi hydrophobic kapena hydrophilic?

Hydroxypropyl methylcellulose (HPMC) ndi polima wosunthika wokhala ndi hydrophobic ndi hydrophilic properties, ndikupangitsa kuti ikhale yapadera munjira zosiyanasiyana m'mafakitale osiyanasiyana. Kuti timvetsetse za hydrophobicity ndi hydrophilicity ya HPMC, tiyenera kuphunzira momwe imapangidwira, katundu wake ndi ntchito zake mozama.

Kapangidwe ka hydroxypropyl methylcellulose:

HPMC ndi yochokera ku cellulose, polima wachilengedwe wopezeka m'makoma a cellulose. Kusintha kwa cellulose kumaphatikizapo kukhazikitsidwa kwa magulu a hydroxypropyl ndi methyl mumsana wa cellulose. Kusinthidwa uku kumasintha mawonekedwe a polima, kupereka zinthu zinazake zomwe zimapindulitsa pamagwiritsidwe osiyanasiyana.

Hydrophilicity ya HPMC:

Hydroxy:

HPMC ili ndi magulu a hydroxypropyl ndipo ndi hydrophilic. Magulu a hydroxyl awa ali ndi kuyanjana kwakukulu kwa mamolekyu amadzi chifukwa cha kugwirizana kwa haidrojeni.

Gulu la Hydroxypropyl limatha kupanga zomangira za haidrojeni ndi mamolekyu amadzi, kupangitsa HPMC kusungunuka m'madzi pamlingo wina.

methyl:

Ngakhale gulu la methyl limathandizira ku hydrophobicity yonse ya molekyulu, silimatsutsana ndi hydrophilicity ya gulu la hydroxypropyl.

Gulu la methyl ndilopanda polar, koma kupezeka kwa gulu la hydroxypropyl kumatsimikizira khalidwe la hydrophilic.

Hydrophobia ya HPMC:

methyl:

Magulu a methyl mu HPMC amazindikira kumlingo wake wa hydrophobicity.

Ngakhale si hydrophobic monga ma polima ena opangidwa mokwanira, kupezeka kwa magulu a methyl kumachepetsa hydrophilicity yonse ya HPMC.

Kupanga Mafilimu:

HPMC imadziwika ndi kupanga mafilimu ndipo nthawi zambiri imagwiritsidwa ntchito popanga mankhwala ndi zodzoladzola. Hydrophobicity imathandizira kupanga filimu yoteteza.

Kuyanjana ndi zinthu zopanda polar:

Mu ntchito zina, HPMC akhoza kucheza ndi zinthu sanali polar chifukwa tsankho hydrophobicity. Katunduyu ndi wofunikira pamakina operekera mankhwala m'makampani opanga mankhwala.

Ntchito za HPMC:

mankhwala:

HPMC imagwiritsidwa ntchito kwambiri popanga mankhwala monga binder, filimu yakale, ndi viscosity modifier. Kukhoza kwake kupanga filimu kumathandizira kutulutsidwa kwa mankhwala.

Amagwiritsidwa ntchito m'njira zolimba zapakamwa monga mapiritsi ndi makapisozi.

Makampani omanga:

M'gawo la zomangamanga, HPMC imagwiritsidwa ntchito popanga simenti kuti igwire bwino ntchito, kusunga madzi komanso kumamatira.

Hydrophilicity imathandizira kusunga madzi, pomwe hydrophobicity imathandizira kumamatira.

makampani azakudya:

HPMC imagwiritsidwa ntchito ngati thickener ndi gelling wothandizira pamakampani azakudya. Chikhalidwe chake cha hydrophilic chimathandizira kupanga ma gels okhazikika ndikuwongolera kukhuthala kwazakudya.

zodzikongoletsera:

Muzodzoladzola zodzoladzola, HPMC imagwiritsidwa ntchito pazinthu monga mafuta odzola ndi mafuta odzola chifukwa cha kupanga mafilimu ndi kukhuthala.

Hydrophilicity imapangitsa kuti khungu likhale labwino.

Pomaliza:

HPMC ndi polima kuti onse hydrophilic ndi hydrophobic. Kuyenderana pakati pa magulu a hydroxypropyl ndi methyl mu kapangidwe kake kumapereka kusinthasintha kwapadera, kulola kuti ikhale ndi ntchito zambiri. Kumvetsetsa zinthu izi ndikofunikira kwambiri pakukonza HPMC kuti igwiritsidwe ntchito m'mafakitale osiyanasiyana, pomwe kuthekera kwa HPMC kuyanjana ndi madzi ndi zinthu zopanda pake kumagwiritsidwa ntchito pazifukwa zosiyanasiyana.