Zithini izinto ezingafunekiyo ze-hydroxypropyl methylcelgulose?

I-HydroxyPOpyl Methylcelcelsele (i-HPMC) yi-polymer eguquguqukayo ngezicelo kwimizi-mveliso eyahlukeneyo, kubandakanya amayeza, ukwakhiwa, ukutya, ukutya kunye ne-cosmetics. Izinto ezingafunekiyo ezisetyenziswa kwi-HPMC Synthesis zivela kwimithombo yendalo kwaye zenze uthotho lwezilungiso zekhemikhali ukufumana iipropathi eziyimfuneko.

I-sellyulose: iziseko

Esona sixhobo siphambili se-HPMC yi-sellyulise, i-carbohydrate ebiyisiwe kwiindonga zeseli zezityalo. I-Cotton kunye nePulp yeWood yimithombo yesiqhelo ye-sellyulose. Iintsinga zeselselose zithathwe kuqala ukususa ukungafezekisi kwaye emva koko i-hydrolyzed yokuqhekeza imixokelelwane yeselfowuni. Inkqubo ibandakanya ukusebenzisa i-asidi okanye i-enzymes yokufikelela kwi-glycosidi ye-glycossidic ye-glycosidic ekhoyo kwisellulose, ekhokelela kwiikhameti ezimfutshane zeSeluplose ebizwa ngokuba yiTlula.

I-propylene oxide: Intshayelelo yeQela le-hydroxypropy

Emva kokufumana i-ethersese i-ether, inyathelo elilandelayo libandakanya ukwazisa amaqela e-hydroxyproplop kwi-selsulose umva. I-propylene oxide sisixhobo esiphambili esisetyenziselwa le njongo. Phambi kwe-alkaline catalyst, i-propylene oxide i-oxide kunye namaqela e-hydroxyl kwikhonkco leselselose, okukhokelela ekufakweni kwamaqela e-hydroxypropy. Oku kusabela, kubizwa ngokuba yi-EURE, idlala indima ebalulekileyo ekutshintsheni iipropathi zomzimba kunye neekhemikhali zeSelelUlose, ukuvelisa i-hydroxpropyl yeseluplose yeseluplose.

I-Methyl Chloride: Yongeza iqela le-methyl

Kwinyathelo lokuguqula emva koko, i-methyl chloride isetyenziselwa ukwazisa amaqela e-methyl kwi-selsebose yeselselose. Le nkqubo, ebizwa ngokuba yi-metyratid, ibandakanya ukuphendula kwi-sellyulose ne-methyl chloride phambi kwesiseko. Amaqela e-methyl yongezwa kwi-hydroxypropylcelcelcelcelose ukwenza i-hydroxypropythylcelmethylcelose (i-HPMC). Inqanaba lokufakwa endaweni (DS) libonisa inani le-hydroxypropy ye-hydropyl kunye namaqela e-methyl kwi-Glucose ye-Glulose kwi-Cleulose Chain kwaye unokulawulwa kweli nqanaba ukulungelelanisa iipropathi zemveliso yokugqibela ye-HPMC.

I-Alkali: Ithambelela kwaye ilawula i-viscofity

Emva kokuthumeza kunye namanyathelo e-methysis, i-HPMC ekhokelela i-alkaline. Isiseko esifana neSodium hydroxide isetyenziselwa ukubethelela imveliso. Eli nyathelo libalulekile ukufezekisa inqanaba le-ph enqwenelekayo kwaye luphucule uzinzo lwe-HPMC. Ukongeza isiseko kukwanceda ukulawula i-vicmosity yezisombululo ze-HPMC, ibenza balungele iintlobo ezahlukeneyo apho uVescosity udlala indima ebalulekileyo, njengokwenziwa kwamayeza kunye nezixhobo zokwakha.

Ukuhlanjululwa kunye nokuQinisekisa: Ukuqinisekisa uMgangatho

Emva kokulungiswa kweekhemikhali, iimveliso ze-HPMC zihlanjululwe ukususa nayiphi na into engenakuthelekiswa nanto, iimveliso, okanye ukungcola. Oku kucocwa ngokuqhelekileyo kusetyenziswa inkqubo yokuqhutywa, ukuqinisekisa ukuba imveliso yokugqibela ye-HPMC ihlangabezana nemigangatho efanelekileyo. Ukucocwa linyathelo elibalulekileyo lokuphelisa izinto ezingafunekiyo ezinokuthi zichaphazele intsebenzo kunye nokhuseleko lwe-HPMC kwisicelo sayo.

Izicelo ze-hydroxypropyl methylcelcelcelose

Amayeza: I-HPMC isetyenziswe ngokubanzi kumzi-mveliso wamachiza njenge-binder, ifilimu yangaphambili nelawulwa iarhente yokukhutshwa kwetafile. Amandla ayo okwenza iifilimu ezibonakalayo ezenza ukuba ilungele ukuthuthuza kwetafile, ukubonelela ngomaleko okhuselayo kunye nokulawula ukukhutshwa kwamachiza.

Ulwakhiwo: Kumzi-mveliso wokwakha, i-HPMC isetyenziswa kwizixhobo ezisekwe kwisamente ezinje ngodaka, uStucco naseTile. Isebenza njenge-gicker, iarhente yokugcina amanzi, kwaye iphucula ukusebenza ngokuphumelelayo kunye nokunamathela.

Umzi-mveliso wokutya: i-HPMC isetyenziswa kumzi-mveliso wokutya njenge-gickener, i-stabilizer kunye ne-e-mulsifier. Isetyenziswa kwiimveliso ezahlukeneyo zokutya, kubandakanya neesosi, ukunxiba kunye needessert.

I-cosmetics: kwi-cosmetics, i-HPMC isetyenziswa kwiifomula ezinjengeekhrim, i-lotions, kunye ne-shampoos ukubonelela ngononophelo, ukuphucula ukusebenza, kunye nokonyusa intsebenzo yemveliso.

Iipeyinti kunye neengubo: i-HPMC isetyenziswa njenge-thi choner kunye nokuzinza kwiipeyinti ezisekwe emanzini kunye neengubo ukunceda ukuphucula i-RUOOOOOOOOOOOOLOOLOOR yokwakha.

Iimveliso zononophelo lobuqu: i-HPMC ifumaneka kwiimveliso zobuqu ezinobuqu, kubandakanya neemveliso zamazinyo kunye neenwele, apho isebenza njenge-binder kunye ne-viscofier modifier.

I-HydroxyPOpyl Methylcelcelse yi-polymer exabisekileyo ngoluhlu olubanzi lwezicelo kumashishini ahlukeneyo. I-Synthesis ye-HPMC ibandakanya ukusetyenziswa kwe-selsulose, i-propylene oxide, i-methyl chloride, ialkali kunye namanyathelo okucoca izinto eziphezulu. Ukugxininisa kwe-HPMC kwizitya zayo zokuguqula iipropathi zomzimba kunye neekhemikhali zeselfowuni, ezenza isithako esiphambili kwi-Pharmenticals, izinto zokwakha, ukutya, iipeyinti kunye neemveliso zononophelo. Ukuqonda izinto ezingafunekiyo kunye nenkqubo yeSingqukucwe kubaluleke kakhulu ekulungelelaniseni i-HPMC kwizicelo ezithile kunye nokwenza umsebenzi wayo kwiifom ezahlukeneyo.