Kuchengeta kwemvura inzvimbo yakakosha kune maindasitiri akawanda anoshandisa hydrophilic zvinhu senge cellulose. Hydroxypronylmethylcylsellose (HPMC) ndeimwe yeiyo cellaulose ana vana neyakanyanya kudzokorora kwemvura. HPMC ndeye Synthetic Polymer inotorwa kubva ku cellulose uye inowanzoshandiswa mune dzakasiyana siyana dzekushandisa mukuvakwa, maindasitiri emishonga uye edmace.
HPMC inoshandiswa zvakanyanya sedhizimusi, stabilizer uye emulsifier mune dzakasiyana zvigadzirwa zvekudya senge ice cream, sosi uye majira kuti azivise chimiro chavo, kuenderana uye mararamiro asherufu. HPMC inoshandiswawo mukugadzirwa kwemishonga yemishonga muindasitiri yemishonga seyekuchinjika, kuparadzaniswa uye kufambisa mumiririri. Iyo inoshandiswawo seyemvura-yekuchengetedza mumiririri muzvivakwa zvekuvaka, kunyanya musike uye mongwe.
Kuchengetwa kwemvura inzvimbo yakakosha mukuvaka nekuti inobatsira kuti ichangobva kusanganiswa simende uye muchetsa kubva mukuoma kunze. Kuomesa kunogona kukonzera kudzikira uye kupaza, zvichikonzera zvisikwa zvisina kusimba uye zvisina kugadzikana zvivakwa. HPMC inobatsira kuchengetedza zvemvura musi wemvura nemutumbi nekunyora mamorekuru emvura uye nekuvasunungura zvishoma nezvishoma nekufamba kwenguva, kubvumira zvekuvakisa kurapa zvakanaka uye kuomesa.
Iyo yekuchengetwa kwemvura yeHPMC yakavakirwa paHydrophilicityity. Nekuda kwekuvapo kwemapoka ehydroxyl (-OOOH) mune yayo moleky chimiro, Hpmc ine kusanzwisisika kwemvura. Iwo maHydroxyl mapoka anofambidzana nemamolekyudhi emvura kuti agadzire hydrogen zvisungo, zvichikonzera kuumbwa kwehyong yehyot yakakomberedza ngetani. Iyo hydrate shell inobvumira iyo polymer ngetani kuti uwedzere, kuwedzera huwandu hweHPMC.
Kuzvimba kweHPMC igadziriro yesimba iyo inoenderana nezvinhu zvakasiyana-siyana zvakadai sekutsiva Dhigirii rekutsiva rinoreva huwandu hwenhamba dzakatsiviwa hydroxyl mapoka paAnhydroglucose unit muCellulose Chain. Iyo yepamusoro iyo DS kukosha, yakakwira iyo hydrophilikuity uye zviri nani kudzokorora kwemvura. Saizi yehukuru hweHPMC zvakare inokanganisa kudzokorora kwemvura, sezvo zvidiki zvidiki zvine nzvimbo yakakura pamusoro peyunivhesiti, zvichikonzera kupinda kwemvura yakakura. Tembiricha nePP kukosha kunokanganisa huwandu hwekuzvimba uye kuchengetwa kwemvura, uye tembiricha yakakwira uye yakadzika pH kukosha kusimudzira kuzvimba uye kwemvura kuchengetwa kweHPMC.
Iyo yekuchengetwa kwemvura yemvura yeHPMC inosanganisira zviyero zviviri: kunyudza uye deserption. Munguva yekunyura, HPMC inobata mamorekuru emvura kubva munzvimbo dzakapoteredzwa, kugadzira hydration ganda rakakomberedza ngetani dze polymer. Iyo hydration shell inodzivirira machira emapolymer kubva pakudonha uye anodzivirira kuti vaparadzaniswe, zvichitungamira mukuzvimba kweHPMC. Mamolekyudhi emvura akabatikana anogadzira hydrogen zvisungo neiyo hydroxyl mapoka muHPMC, kuisanira iyo yekuchengetedza mvura yekuchengetedza mvura.
Munguva yekudzvinyirira, HPMC zvishoma nezvishoma inosunungura mamorekuru emvura, ichibvumira zvinyorwa zvekuvaka kuporesa nemazvo. Kusunungurwa kunononoka kwemamolekyudhi emvura kunoita kuti simende uye mongwe ramba riripo hydrate, zvichikonzera chimiro chakagadzikana uye chakasimba. Kusunungurwa zvishoma kwemamolekyu kunopawo mvura inogara ichipinda uye mucheki, kuvandudza kurapa kwekuporesa uye kuwedzera simba uye kugadzikana kwechigadzirwa chekupedzisira.
Mukupfupikisa, kuchengetwa kwemvura inzvimbo yakakosha kune maindasitiri akawanda anoshandisa hydrophilic zvinhu zvakadai sekune cellulose. HPMC ndeimwe yemasololose avaneta neakakwira nzvimbo yekuchengetwa kwemvura uye inoshandiswa zvakanyanya mukuvaka, maindasitiri emishonga uye edmace. Iyo yekuchengetwa kwemvura yeHPMC yakavakirwa paHydrophilicity, iyo inogonesa kutora mamorekuru emvura kubva munzvimbo dzakapoteredzwa, kuumba hydration ganda rakatenderedza manomimu. Iyo hydrate shell inokonzeresa iyo HPMC yekuzvimba, uye kusunungurwa kwemamolekora emvura kunoita kuti zvinyorwa zvekuvakisa zvinoramba zvakazara hydrate, zvichikonzera chimiro chakagadzikana uye chakasimba.
Kutumira Nguva: Aug-24-2023