1. Mawu Oyamba
Hydroxypropyl methylcellulose (HPMC) ndi chinthu chofunikira chopangidwa ndi cellulose chomwe chimagwiritsidwa ntchito kwambiri pomanga, kukonza mankhwala, zowonjezera chakudya ndi zodzoladzola. Kusungidwa bwino kwa madzi ndi chimodzi mwazinthu zofunika kwambiri pakugwiritsa ntchito kwa HPMC.
2. Kapangidwe ndi katundu wa HPMC
2.1 Kapangidwe ka Chemical
HPMC ndi semisynthetic cellulose ether. Ma hydroxypropyl ndi methyl olowa m'malo ake amamupatsa kusungunuka kwapadera komanso ma colloidal. Mapangidwe oyambira a HPMC amakhala ndi unyolo wa β-D-glucose wa cellulose, momwe magulu ena a hydroxyl amasinthidwa ndi magulu a methyl ndi hydroxypropyl. Udindo ndi kuchuluka kwa m'malo mwa izi zimakhudza mwachindunji kusungunuka, mamasukidwe akayendedwe ndi kusunga madzi kwa HPMC.
2.2 Katundu wakuthupi
Kusungunuka kwamadzi: HPMC imasungunuka mosavuta m'madzi ozizira ndipo imapanga yankho la colloidal m'madzi otentha.
Katundu wokhuthala: Itha kupanga yankho la viscous m'madzi ndipo imakhala ndi kukhuthala kwabwino.
Katundu wopanga mafilimu: Itha kupanga filimu yowonekera komanso yotanuka.
Kuyimitsidwa: Ili ndi ntchito yabwino yoyimitsidwa mu yankho ndipo imatha kukhazikika nkhani yoyimitsidwa.
3. Kusunga madzi kwa HPMC
3.1 Njira yosungira madzi
Kusungidwa kwa madzi kwa HPMC makamaka kumabwera chifukwa cha kuyanjana pakati pa magulu a hydroxyl ndi olowa m'malo ake pama cell ndi mamolekyu amadzi. Makamaka, HPMC imasunga madzi kudzera munjira izi:
Kulumikizana kwa haidrojeni: Magulu a hydroxyl mu mamolekyu a HPMC amapanga zomangira za haidrojeni ndi mamolekyu amadzi. Mphamvu imeneyi imathandiza kuti mamolekyu amadzi amangike molimba mozungulira HPMC, kuchepetsa kutuluka kwa madzi.
High viscosity effect: The high viscosity solution yopangidwa ndi HPMC m'madzi imatha kulepheretsa kuyenda kwa madzi, potero kuchepetsa kutaya kwa madzi.
Kapangidwe ka netiweki: Kapangidwe ka netiweki kamene kamapangidwa ndi HPMC m'madzi kumatha kugwira ndikusunga mamolekyu amadzi, kuti madziwo agawidwe molingana ndi ma network.
Colloid effect: Colloid yopangidwa ndi HPMC imatha kutseka madzi mkati mwa colloid ndikuwonjezera nthawi yosungira madzi.
3.2 Zomwe zikukhudza kasungidwe ka madzi
Mlingo wolowa m'malo: Kusungidwa kwa madzi kwa HPMC kumakhudzidwa ndi kuchuluka kwa m'malo (DS). The apamwamba digiri ya m'malo, mphamvu hydrophilicity wa HPMC ndi bwino ntchito yake madzi posungira ntchito.
Kulemera kwa mamolekyulu: Kulemera kwa mamolekyu kumathandizira kupanga maukonde amphamvu kwambiri, potero kumathandizira kusunga madzi.
Kuyikira Kwambiri: Kuchuluka kwa yankho la HPMC kumakhudza kwambiri kusunga madzi. Mayankho apamwamba amatha kupanga njira zowonjezera zowoneka bwino komanso ma network okhazikika, potero amasunga madzi ambiri.
Kutentha: Kusungidwa kwa madzi kwa HPMC kumasiyanasiyana ndi kutentha. Kutentha kukakwera, kukhuthala kwa njira ya HPMC kumachepa, zomwe zimapangitsa kuchepa kwa madzi.
4. Kugwiritsa ntchito HPMC m'magawo osiyanasiyana
4.1 Zipangizo zomangira
Pazomangira, HPMC imagwiritsidwa ntchito ngati chosungira madzi pa simenti ndi zinthu zopangidwa ndi gypsum. Ntchito zake zazikulu ndi izi:
Limbikitsani ntchito yomanga: Posunga chinyezi chokwanira, nthawi yotseguka ya simenti ndi gypsum imakulitsidwa, zomwe zimapangitsa kuti ntchito yomanga ikhale yosavuta.
Chepetsani ming'alu: Kusunga madzi bwino kumathandiza kuchepetsa ming'alu yomwe imapangidwa panthawi yowumitsa ndikuwonjezera mphamvu ndi kulimba kwa zinthu zomaliza.
Limbikitsani mphamvu ya chomangira: Mu zomatira matailosi, HPMC imatha kukulitsa mphamvu ya chomangira ndikuwonjezera mphamvu yomangira.
4.2 Kukonzekera kwamankhwala
Pokonzekera mankhwala, kusunga madzi kwa HPMC kumagwira ntchito yofunika kwambiri pakumasulidwa ndi kukhazikika kwa mankhwala:
Kukonzekera kumasulidwa kosalekeza: HPMC ingagwiritsidwe ntchito ngati matrix omasulidwa kwa mankhwala kuti athetse kumasulidwa kwa mankhwala mwa kulamulira kulowa kwa madzi ndi kusungunuka kwa mankhwala.
Thickeners ndi binders: Mu mankhwala amadzimadzi ndi mapiritsi, HPMC imakhala ngati thickener ndi binder kusunga bata ndi kusasinthasintha kwa mankhwala.
4.3 Zakudya zowonjezera
M'makampani azakudya, HPMC imagwira ntchito ngati thickener ndi stabilizer, ndipo kusungirako madzi kumagwiritsidwa ntchito:
Kupititsa patsogolo kukoma: Kupyolera mu kusunga madzi, HPMC imatha kusintha maonekedwe ndi kukoma kwa chakudya, ndikupangitsa kuti ikhale yopaka mafuta komanso yokoma.
Kutalikitsa moyo wa alumali: Kupyolera mu kusunga madzi, HPMC ikhoza kuteteza madzi kutayika panthawi yosungira, potero kukulitsa moyo wa alumali.
4.4 Zodzoladzola
Mu zodzoladzola, kusungidwa kwa madzi kwa HPMC kumagwiritsidwa ntchito:
Mphamvu yonyowa: Monga moisturizer, HPMC imatha kuthandizira kutseka chinyontho pamwamba pa khungu ndikupatsanso mphamvu yayitali.
Kukhazikika kwa kuyimitsidwa: Mu emulsions ndi kuyimitsidwa, HPMC imakhazikika pazogulitsa ndikuletsa kusanja ndi kugwa.
Kusungidwa kwa madzi kwa HPMC kumapangitsa kukhala chinthu chofunikira kwambiri m'magawo ambiri. Imasunga madzi ndipo imachepetsa kutuluka kwa madzi kudzera mu hydrogen bonding, high viscosity zotsatira, ma network ndi colloid zotsatira. Kusungidwa kwa madzi kumakhudzidwa ndi kuchuluka kwa kulowetsedwa, kulemera kwa maselo, ndende ndi kutentha, zomwe zimatsimikizira momwe HPMC imagwirira ntchito mu ntchito inayake. Kaya ndi zida zomangira, zopangira mankhwala, zowonjezera zakudya kapena zodzoladzola, kusungidwa kwamadzi kwa HPMC kumagwira ntchito yofunika kwambiri pakuwongolera komanso kuchita bwino kwa mankhwalawa.
Nthawi yotumiza: Jun-26-2024