Uyini i-hydroxypropyll methylcellulose eyenziwe ngayo?

I-Hydroxypropyl Methylcellulose (HPMC) iyi-polymer eguquguqukayo futhi esetshenziswe kabanzi emikhakheni ehlukahlukene, eyaziwa ngezakhiwo zayo ezihlukile nezinhlelo zokusebenza. Le compound iyindlela etholwa yi-cellulose, i-polymer yemvelo etholakala ezindongeni zeseli zezitshalo. Ukuze uqonde ukwakheka kwe-hydroxypropylmerylcellellellulose, kuyadingeka ukuhlanganisa ukwakheka nokuhlanganiswa kwalesi sikhathi sokususelwa kwalesi sikhathi.

Ukwakheka kwe-cellulose:

I-Cellulose iyi-carbohydrate eyinkimbinkimbi ehlanganisa amayunithi aqondile amayunithi ama-β-d-glucose axhumeke ama-β-1,4-glycosidic bond. Lawa maketanga ama-glucose ahlanganiswa ndawonye ngama-hydrogen bond ukwakha isakhiwo esiqinile somugqa. I-Cellulose iyingxenye esemqoka yokwakheka kwezindonga zezitshalo, ukuhlinzeka amandla nokuqina kokutshala amaseli.

Ukutholwa kwe-hydroxypropyllylylym methylcellulose:

I-Hydroxypropyllylyl methylcellulose ihlelwe ngokuguqula amakhembu elungisa i-cellulose futhi yethula amaqembu we-hydroxypropyl kanye ne-methyls ku-main chain of cellulose. Ukukhiqizwa kuvame ukufaka lezi zinyathelo ezilandelayo:

Ukuphendula okuthe xaxa:

I-methylation: Ukwelapha iselula nge-alkaline solution ne-methyl chloride ukwethula amaqembu we-methyl (-CH3) emaqenjini ama-hydroxyl (-Of) we-cellulose.

I-Hydroxyproppy Le nqubo yenza ngcono i-solubility yamanzi futhi ishintsha izakhiwo ezibonakalayo ze-cellulose.

Ukuhlanzwa:

Isembozo esiguquliwe selihlanzwa ukususa noma yiziphi izimpendulo ezingavuthiwe, ngemikhiqizo noma ukungcola.

Ukomisa nokugaya:

I-hydroxypropyrlypropyll methylcellulose yomisiwe futhi inhlabathi ibe yimpuphu enhle elungele ukusetshenziswa ezinhlobonhlobo zezicelo.

Izithako ze-hydroxypropylylylylk:

Ukwakheka kwe-hydroxypropylllylylyl kubonakaliswa ngezinga lokufakwa esikhundleni, okubhekisele kwizinga lapho amaqembu we-hydroxypropyl kanye ne-methyl afaka esikhundleni samaqembu we-hydroxy. Amabanga ahlukene we-HPMC anamazinga ahlukene wokufaka esikhundleni, okuthinta i-solubity yawo, ukubonakala kwawo kanye nezinye izakhiwo.

Ifomula yamakhemikhali ye-hydroxypropyllylylyl i-methylcellulose ingavezwa njenge (c6h7o2 (oh) (och3) m (OCH2CH (OH) CH3) n) _x, lapho i-M non imele izinga lokufaka esikhundleni.

m: degree of methylation (amaqembu we-methyl ngeyunithi ye-glucose)

n: degree of hydroxypropylation (amaqembu we-hydroxypropyl ngeyunithi ye-glucose)

x: Inani lamayunithi we-glucose ku-cellulose chain

Izici kanye Nezicelo:

I-Solubinity: I-HPMC iyanyibilika, kanti izinga lokufaka esikhundleni lithinta izici zalo ze-solubity. Kwakha isixazululo esicacile ne-viscous emanzini, okwenza kube lulungele ukwakheka okuhlukahlukene.

I-Viscosity: I-viscosity yekhambi le-HPMC incike ezintweni ezifana nesisindo se-molecular kanye nezinga lokufaka esikhundleni. Le mpahla ibaluleke kakhulu kwizinhlelo zokusebenza ezinjengemithi ezidinga ukwakheka okulawulwayo kokukhishwa.

Ukwakheka kwamafilimu: I-HPMC ingakha amafilimu amancanyana njengoba ikhambi liyoma, okwenza kube lusizo ezitsheni ezimbonini ezenza ngemithi, ukudla kanye nezinye izimboni.

Abaqinisi nabakhuthele: Embonini yokudla, i-HPMC isetshenziswa njengesikhulu kanye ne-stabilizer emikhiqizweni ehlukahlukene, kufaka phakathi amasose, ama-dessert kanye nezimpahla ezibhakiwe.

Izicelo zezemithi: I-HPMC isetshenziswa kabanzi ekwakhiweni kwemithi, kufaka phakathi amaphilisi, amaphilisi, kanye nezixazululo ze-ophthalmic, ngenxa yezakhiwo zayo ezilawulwa ezilawulwayo kanye nokubingelela kwayo.

Ukwakhiwa nokumboza: I-HPMC isetshenziswa ezintweni zokwakha ezinjengezidakamizwa, izinamathiseli ze-tile kanye nezinhle. Iphinde isetshenziswe njengesikhulu kanye ne-stabilizer in Paint and Coang addion.

Imikhiqizo yokunakekelwa komuntu siqu: Ku-COSMETICS kanye nemboni yokunakekelwa komuntu siqu, i-HPMC itholakala kwimikhiqizo efana nokhilimu, ama-lotion kanye nama-shampoos, lapho kuhlinzeka khona ukuthungwa nokuqina.

I-Hydroxypropylylylyly methylcellulose itholakala nge-methylation kanye ne-hydroxypropylulation ye-cellulose. Kuyi-polymer enenhloso ehlukahlukene enobubanzi bokusetshenziswa. Izakhiwo zayo ezihlukile zikwenza zibalulekile ezimbonini ezinjengemithi, ukudla, ukwakha kanye nokunakekelwa komuntu siqu. Ukuguqulwa okulawulwayo kwe-cellulose kungathinta kahle izakhiwo ze-HPMC, okwenza kube yingxenye ebalulekile yemikhiqizo eminingi esihlangabezana nayo ezimpilweni zethu zansuku zonke.