Kodi pH yamtengo wa hpmc ndi chiyani?

Mtengo wa PH wa HPMC (Hydroxypypyl Methylcellulose) zimatengera ndende yake mwa njirayo, kutentha komanso kuyera kwa madzi omwe amagwiritsidwa ntchito. Nthawi zambiri, mtengo wamtengo wa hpmc mu mankhwala am'madzi ali pakati pa 5.0 ndi 8.0, kutengera miyeso yosungunuka ndi zomwe wopanga amapanga.

1. Zoyambira za HPMC
HPMC ndi ma cellulose omwe samagwiritsidwa ntchito kwambiri omwe amagwiritsidwa ntchito mu mankhwala ogulitsa, chakudya komanso zodzikongoletsera, ndi mawonekedwe abwino a filimu, kukula ndi kukhazikika komanso kukhazikika. Siyopanda iyoble, osungunuka m'madzi ozizira koma osati m'madzi otentha, ndipo yankho nthawi zambiri sililowerera ndale kapena pang'ono acidic. Mu mafakitale ogwiritsa ntchito mafakitale, hpmc amalandiridwa kwambiri chifukwa cha chitetezo chake komanso chokhazikika.

2. PH Oger of HPMC Aquaous yankho
Malinga ndi kafukufuku wa labotale ndi kafukufuku wa mabuku, mtengo wamtengo wa hpmc mu zothetsera zotsika kwambiri (monga 1-2%) nthawi zambiri amakhala pakati 5.0 ndi 8.0. Malangizo azogulitsa omwe amaperekedwa nthawi zambiri amapanga mawu ofanana a ogwiritsa ntchito kuti atchule panthawi yosintha. Mwachitsanzo, mtengo wa zinthu zina za HPMC mu 0,5% yothetsera njira ya 0,5 mpaka 7.5, yomwe ili pafupi kwambiri.

Njira yochepetsetsa yotsika: kutsika kotsika (<2%), mtengo wamtengo wa HPMC utatha kusungunuka m'madzi nthawi zambiri amakhala osalowerera ndale.

Njira yosinthira kwambiri: Pakukwera kwambiri, njira yothetsera mavuto imachuluka, koma mtengo wa pH umasinthasintha pakati pa zosayenera.

Zotsatira za kutentha: kusungunuka kwa HPMC kumakhudzidwa kwambiri ndi kutentha. Imasungunuka mosavuta m'madzi ozizira komanso yokhazikika mu kutentha kwambiri kumadzi. Pokonzekera yankho la HPMC, nthawi zambiri limalimbikitsidwa kugwiritsa ntchito madzi ozizira kuti mupewe kusintha kwa kutentha komwe kumachitika chifukwa cha kutentha kwambiri.

3. PH yamtengo wapatali ndi chidwi ndi zinthu zokopa zinthu
Nthawi zambiri, pakugwiritsa ntchito ndi kugwiritsa ntchito, mukazindikira phindu la HPMC Aquaous yankho, ma p mita yodziwika bwino imagwiritsidwa ntchito mwachindunji. Komabe, zinthu zotsatirazi zingakhudze zotsatira zake:

Kuyera kwa madzi: madzi ochokera kumagwero osiyanasiyana atha kukhala ndi mchere wosungunuka, mchere, ndi zina zambiri, zomwe zimakhudza zoyezera za PH. Nthawi zambiri zimalimbikitsidwa kugwiritsa ntchito madzi oganiza kapena madzi owonongeka kuti akonzekere yankho la HPMC kuti mutsimikizire zotsatira zake.
Njira yothetsera vutoli: Chuma Chapamwamba cha HPMC, chikuwoneka bwino kwambiri, chomwe chimabweretsa zovuta zina kuti muchepetse muyeso, motero osazindikira (<2%) nthawi zambiri amagwiritsidwa ntchito.
Dera lakunja: Kutentha, kudalirika kwa zida zoyesa, etc. zitha kuyambitsa kupatuka pang'ono.

4. PH Zofunikira mu HPMC PANGANI ZOTHANDIZA
Pamene HPMC imagwiritsidwa ntchito mu chakudya ndi mankhwala, kukhazikika kwake komanso ph ph ph tifunika kuganiziridwa. Mwachitsanzo. Mankhwala ambiri amafunika kumasulidwa m'malo osalowerera ndale kapena acitic pang'ono, motero mafa a HPMC ndioyenera kwambiri pacholinga ichi.

Makampani ogulitsa chakudya: Pamene HPMC imagwiritsidwa ntchito ngati thicker ndi steribilizer, nthawi zambiri zimakhulupirira kuti mtengo wake wafupi ndi wosagwirizana kuti usasokoneze kukoma komanso kukhazikika kwa malonda.
Makampani ogulitsa mankhwala: m'mapiritsi ndi makapisozi, hpmc imagwiritsidwa ntchito kuwongolera mankhwala osokoneza bongo, ndipo ph ph lokhazikika la kusalowerera mosagwirizana limathandizanso kugwiritsa ntchito mankhwalawa.

5. Njira yosinthira PH ya HPMC Aquaus yankho
Ngati mtengo wa pH ya HPMC ikuyenera kusinthidwa mu pulogalamu inayake, imatha kukhala yabwino ndikuwonjezera asidi kapena alkali. Mwachitsanzo, zochepa zodulira ma hydrochloric acid kapena sodium hydroxide njira ikhoza kugwiritsidwa ntchito, koma iyenera kuwongolera mosamala kuti mupewe kwambiri kapena kukhudza kukhazikika kwa HPMC.

Mtengo wa HPM wa HPMC mu njira yothetsera matenda am'madzi nthawi zambiri ili pakati pa 5.0 ndi 8.0, yomwe ili pafupi osalowerera ndale. Zofunikira za PH zomwe zimagwiritsidwa ntchito pazochitika zosiyanasiyana zimatha kukhala zosiyana pang'ono, koma nthawi zambiri sizimasintha mwapadera.