Hydroxypropyl methylcelculose (hpmc)Ngaba i-selsulose esetyenziswayo esetyenziswayo ngoluhlu olubanzi lwezicelo, ngakumbi kumasimi eendawo zeyeza, cosmetics, ukutya kunye nezinto zokwakha. Ayisiyo i-solvent, kodwa i-polymer enyibilikayo emanzini inokunyibilika emanzini kwaye yenze isisombululo se-colloidal esibonakalayo. Ukunyibilisela kwe-gainccel®hpmc kuxhomekeke kwinani kunye nendawo ye-methyl kunye ne-hydroxyproplonts kwindawo yayo yemolekyuli.
1. Iipropati ezisisiseko ze-hydroxypropyl methylcelcelce
I-HydroxylPOpyl MethylcelcelXose ifunyenwe yi-methytrapy kunye ne-hydroxyyprocy yesellulose. I-Selsulose uqobo yindalo ephezulu yemolekyuli ephezulu ekhoyo kwiindonga zeseli zezityalo. Isakhiwo sekhemikhali se-HPMC sibunjwe ikakhulu ziiyunithi ze-glucose, ezikwiimolekyuli ezinde ezinxulumene ne-β-1,4 Glycosidic Bonds. Kwezi meko zemolekyuli, ezinye ii-hydroxyl zitshintshwa yi-methyl (-och₃) kunye ne-hydroxypropyl (-c₃h₇oh), inika isomba elungileyo kunye nezinye iipropathi zomzimba kunye neekhemikhali.
Ukunyibilisela i-HPMC kuchatshazelwa yimo yemolekyuli kwaye ihlala inezi mpawu zilandelayo:
I-Solibuz yamanzi: I-HPMC inokwenza isisombululo se-viscous emanzini kwaye sinyibilike ngokukhawuleza. Ukuluka kwayo kunxulumene ngokusondeleyo nobushushu bamanzi kunye nobunzima bemolekyuli ye-HPMC.
I-viscofity ephezulu: kwi-viscofity ephezulu, isisombululo se-HPMC sibonisa i-viscofity ephezulu, ngakumbi kwinqanaba lemolekyuli ephezulu kunye noxinzelelo oluphezulu.
Uzinzo lwe-therm: I-HPMC inozinzo oluhle kuluhlu oluthile lwamaqondo obushushu kwaye akukho lula ukubola, oko kunezibonelelo ezithile kwinkqubo yokulungisa i-shirmal.
I-2. Ukunyibilika kwe-HPMC
I-HPMC yinto ebizelwe ngamanzi, kodwa ayichithwanga ngayo yonke into. Ukuziphatha kwalo kuhambelana ne-polared ye-solvent kunye nentsebenzo phakathi kweemolekyuli zeSolvent kunye neemolekyuli ze-HPMC.
Amanzi: I-HPMC inokutshitshiswa emanzini. Amanzi sisinyibilikisi esiqhelekileyo, kwaye ngexesha lenkqubo yokupheliswa, i-Nqulcel®Hpmc Molekyum ze-hydrogeles ineemolekyuli zamanzi ukufezekisa ukupheliswa. Inqanaba lokupheliswa lichaphazeleka ngenxa yezinto ezinje ngobunzima be-phumc, inqanaba le-methylid kunye ne-hydroxyypropy, ubushushu, kunye nexabiso le-pH. Ngokwesiqhelo, i-sloubing ye-HPMC yeyona ilungileyo kwindawo engathathi cala.
Izinyibilikisi ze-organic: i-HPMC iphantse yangcungcutheka kwezonalwolntys zezinto eziphilayo, ezinje ngotywala, ii-nin, kunye nee-hydrocarbons. Kungenxa yokuba isakhiwo sayo semolekyuli siqulathe amaqela e-hydroxyl hydroxyl kunye ne-lipophilic methyl kunye namaqela e-hydroxypropyl. Nangona inzuzo eyomeleleyo yamanzi, ingenakuhambelana nokulunga kakhulu kwezinyibilikisi eziphilayo.
Ukubizwa kwamanzi okushushu: Kumanzi afudumeleyo (ngokufuthi i-40 ° C), i-HPMC iyanyibilika ngokukhawuleza kwaye isisombululo esichithiweyo sibonisa i-viscofity ephezulu. Njengoko ubushushu obunyuka busebenza ngakumbi, ireyithisi yokuchithelwa kunye nokusweleka kuya kunyuka, kodwa kubushushu obuphakamileyo kakhulu, uVekyuli wesisombululo unokuchaphazeleka.
3. Ukusetyenziswa kwe-HPMC
Ngenxa yomoya wawo olungileyo wamanzi, ubuthi ophantsi kakhulu, kunye nohlengahlengiso oluguqukayo, i-HPMC isetyenziswa ngokubanzi kumashishini ahlukeneyo.
Ishishini lamachiza: Kumzi-mveliso wamayeza, i-HPMC isetyenziswa ngokubanzi kumalungiselelo amachiza amachiza, itafile yokubumba, i-Gels, kunye nabathwali iziyobisi. Inganceda iziyobisi ngokucokisekileyo emanzini kwaye ilawule umgangatho wokukhululwa kweziyobisi.
Ishishini lokutya: i-HPMC, njengokutya, isetyenziselwa ukwahlulwa, ukuqina, kunye nokunyibilikisa. Kwimpahla ebhakiweyo, inokuphucula ixesha kunye nokuzinza kwenhlama. I-HPMC ikwasetyenziswa kwi-ice cream, i-goriges kunye nokutya okuphantsi kwamafutha.
Ishishini lokwakha: Kumzi-mveliso wokwakha, i-HPMC ihlala isetyenziswa njenge-thi cokener yokwakha udaka, olunokuphucula ukusebenza kwezakhiwo, ukugcinwa kwamanzi kunye nokwahlula amandla odaka.
Cosmetics: In cosmetics, AnxinCel®HPMC is mainly used as a thickener, suspending agent and stabilizer, and is widely used in products such as face creams, shampoos, and shower gels.
I-HPMCNgaba ukunyibilika kwamanzi kunye ne-vikous kakhulu ye-villsulous enokwenza isisombululo se-colloidal esibonakalayo emanzini. Ayisiyo inyibilikisi, kodwa i-moleculand ephezulu inokunyibilika emanzini. Ukunyibilisela kwalo kubonakala kusomelele kakhulu emanzini, kodwa ukunyibilikisa kwiinyibilikisi eziphilayo. Ezi mpawu ze-HPMC zenza ukuba zisetyenziswe ngokubanzi kumashishini amaninzi, kubandakanya amayeza, ukutya, ukwakhiwa kunye ne-cosmetics.
IXESHA LOKUQALA: NgoFebruwari-17-2025