Hydroxypropyll Methylcellulose, yemwe amadziwika kuti Hopmc, amagwiritsidwa ntchito kwambiri komanso zowonjezera zowonjezera. Chifukwa cha kusinthika kwake koyenera, kuthekera komangiriza ndi katundu wamafilimu, zagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala. HPMC imagwiritsidwanso ntchito makampani ogulitsa zakudya ngati thicker, emulsifier ndi kukhazikika. Kuyera kwa HPMC ndikofunikira kwambiri m'mafakitale a mankhwala ndi chakudya momwe zimakhudzira bwino ntchito ndi chitetezo cha chinthucho. Nkhaniyi ifotokoza za kutsimikiza mtima kwa chiyero cha HPMC ndi njira zake.
Kodi HPMCS ndi chiyani?
Hydroxypropymethylcellulose (hpmc) ndi ether ether yochokera ku Methylcellulose. Kukula kwake kwa maselo ndi ma Daltoon okwana 10,000 mpaka 1,000,000, ndipo ndi ufa woyera kapena wopanda mchere, wopanda fungo komanso wopanda pake. HPMC imasungunuka mosavuta m'madzi, ndikusungunukanso m'malo ena okhazikika monga Ethanol, aninol, ndi chloroform. Ili ndi malo ena apadera monga kusungidwa kwamadzi, kukhazikika ndi kuthekera komanso kumanga, zomwe zimapangitsa kuti zikhale zabwino kwa mafakitale opangira mankhwala ndi chakudya.
Kutsimikiza kwa chiyero cha HPMC
Kuyera kwa HPMC kumadalira zinthu zingapo monga kuchuluka kwa zolowetsa (DS), chinyezi komanso phulusa. DS imayimira kuchuluka kwa magulu a hydroxyl omwe adalowetsedwa ndi magulu a hydroxypyl mu ma cellulose molekyulu. Kukhazikika kwa cholowa kumapangitsa kusungunuka kwa HPMC ndikuwongolera luso lopanga mafilimu. Mosiyana, kuchuluka kwa cholowa m'malo mwake kumapangitsa kuchepetsedwa kuchepetsedwa kuchepetsedwa ndi zinthu zosauka zamakanema.
Njira ya HPMC yoyera
Pali njira zingapo zodziwira chiyero cha HPMC, kuphatikiza cha acidi acid, kuwunika kwa acid Nayi tsatanetsatane wa njira iliyonse:
kuthira cha asidi
Njirayi imatengera zomwe zikuchitika moyenera pakati pa acid ndi magulu oyambira ku HPMC. Choyamba, HPMC imasungunuka mu zosungunulira komanso voliyumu yodziwika ya asidi kapena maziko yankho la chidwi chodziwika bwino. Titation idachitika mpaka PHOT idasinthidwa. Kuchokera kuchuluka kwa acid kapena maziko omwe adyedwa, kuchuluka kwa zolowetsa kungawerengeredwe.
Kusanthula Kwabwino
Kusanthula Kwachikulu kumayesa kuchuluka kwa chinthu chilichonse chomwe chilipo, kuphatikizapo kaboni, haidrojeni, ndi mpweya. Mlingo wazolowa muzolowa zitha kuwerengedwa kuchokera ku kuchuluka kwa zomwe zili mu HPMC chitsanzo.
Kukwera Kwambiri kwamadzimadzi a chromatography (HPLC)
HPLC imagwiritsidwa ntchito kwambiri yogwiritsidwa ntchito kwambiri yomwe imalekanitsa zigawo za osakaniza malinga ndi kulumikizana kwawo ndi masiteshoni ndi mafoni. Ku HPMC, kuchuluka kwa zolowa kumatha kuwerengedwa ndikuyezera chiwerengero cha hydroxypyl mpaka methyl m'magulu.
Infrated spectroscopy (ir)
Wofatsa Spectroscopy ndi njira yowunikira yomwe imayeza mayamwidwe kapena kufalikira kwa ma radiation mwa zitsanzo. HPMC ili ndi mayamwidwe osiyanasiyana a hydroxyl, methyl ndi hydroxypropyl, omwe angagwiritsidwe ntchito kudziwa kuchuluka kwa mpweya.
Kuyera kwa HPMC ndikofunikira kwambiri m'mafakitale a mankhwala opangira mankhwala ndi chakudya, ndipo kutsimikiza kwake ndikofunikira kuonetsetsa kuti chitetezo cha chinthu chomaliza. Njira zingapo zilipo kuti mudziwe kuyera kwa HPMC, kuphatikiza cha asidi acid, timitima yoyambira, hplc, ndi ir. Njira iliyonse imakhala ndi zabwino zake komanso zovuta zake ndipo zimatha kusankhidwa molingana ndi zofunikira za pulogalamuyi. Kuti mukhalebe oyera a HPMC, iyenera kusungidwa pamalo owuma, ozizira kutali ndi kuwala kwa dzuwa ndi ena odetsedwa.
Post Nthawi: Aug-25-2023