IHydroxypropyl methyl cellulose (HPMC) yipolymer eguquguqukayo esetyenziswa ngokubanzi kumashishini ahlukeneyo, kubandakanya ukutya, amayeza, kunye nokwakha. Yi-semi-synthetic derivative ye-cellulose, eyipolima yendalo efumaneka kwiindonga zeeseli zezityalo. I-HPMC yenziwe ngokuguqula iikhemikhali zeselulosi kunye ne-hydroxypropyl kunye namaqela e-methyl, ephucula ukunyibilika kwayo kwamanzi, i-viscosity, kunye nezinye iimpawu. Kweli nqaku, siza kuxoxa ngeempawu ze-HPMC kunye nokusetyenziswa kwayo kumashishini ahlukeneyo.

Ukunyibilika kwamanzi

Enye yezona zinto zibalulekileyo ze-HPMC kukunyibilika kwayo emanzini. HPMC inyibilika ngokulula emanzini ukwenza isisombululo ecacileyo, viscous. Iqondo lokunyibilika lixhomekeke kwiqondo lokuthatha indawo (DS) ye-HPMC. I-DS ibhekisa kwinani le-hydroxypropyl kunye namaqela e-methyl adityaniswe kwi-molecule ye-cellulose nganye. Xa iphezulu i-DS, kokukhona i-HPMC i-soluble ngakumbi emanzini. I-HPMC ene-DS ye-1.8 okanye ngaphezulu ithathwa njenge-soluble kakhulu emanzini.

Viscosity

Enye ipropati ebalulekileyo ye-HPMC yi-viscosity yayo. HPMC yi polima viscous kakhulu, nto leyo ethetha ukuba angqingqwa, syrupy ukungaguquguquki. I-viscosity ye-HPMC ixhomekeke kwizinto ezininzi, ezibandakanya i-DS, ubunzima be-molecular, kunye noxinzelelo lwepolymer kwisisombululo. I-DS ephezulu kunye nobunzima be-molecular kubangela i-viscosity ephezulu. I-viscosity ye-HPMC inokulungelelaniswa ngokutshintsha ukuxinwa kwepolymer kwisisombululo.

Ukuzinza kweThermal

I-HPMC izinzile ngokobushushu kwaye inokumelana namaqondo obushushu ukuya kuma-200°C ngaphandle kokuthotywa okubalulekileyo. Oku kuyenza ilungele ukusetyenziswa kwiinkqubo ezininzi zoshishino ezibandakanya ukushisa okuphezulu, njengokumisa isitshizi kunye ne-extrusion. HPMC kwakhona ukuxhathisa okulungileyo iiasidi kunye neziseko, nto leyo eyenza ukuba ilungele ukusetyenziswa kwindawo asidi okanye alkaline.

Iipropati zokwenziwa kweefilimu

I-HPMC ineempawu ezibalaseleyo zokwenza ifilim, eziyenza ibe luncedo kwiintlobo ngeentlobo zezicelo. I-HPMC inokwenza ifilimu eyomeleleyo, ebhetyebhetye ekwaziyo ukumelana nokufuma, ubushushu, kunye neekhemikhali. Oku kwenza kube luncedo kumashishini amayeza okugcoba iipilisi kunye neepilisi zokuphucula ukubonakala kwazo kunye nokuzinza. I-HPMC isenokusetyenziswa kushishino lokutya ukwenza iifilimu ezityiwayo ezinokuthi zisetyenziswe ukugcina nokukhusela iimveliso zokutya.

Iimpawu zokuncamathelisa

I-HPMC ineempawu zokuncamathelisa ezilungileyo, ezenza kube luncedo kushishino lokwakha. I-HPMC ingasetyenziswa njengesibophelelo kwiimveliso ezisekwe kwisamente, ezifana nodaka kunye negrout. Inokusetyenziswa kwakhona njenge-thickener kwi-adhesives ye-tile kunye nezihlunu ezidibeneyo. I-HPMC iphucula ukusebenza kunye nokusebenza kwezi mveliso ngokubonelela ngokubambelela okuhle kunye nokugcinwa kwamanzi.

Usetyenziso lwe-HPMC

I-HPMC inezicelo ezininzi kumashishini ahlukeneyo, kuquka:

Ishishini lokutya: I-HPMC isetyenziswa njenge-thickener, stabilizer, kunye ne-emulsifier kwiimveliso ezininzi zokutya, ezifana neesosi, iilokhwe, kunye nempahla ebhakiweyo. Isenokusetyenziswa ukwenza iifilimu ezityiwayo kunye neengubo.

UShishino lwaMayeza: I-HPMC isetyenziswa njengecwecwe kunye ne-ejenti yokugquma i-capsule, kunye ne-binder, i-disintegrant, kunye ne-arhente yokukhululwa okuqhubekayo kwimixube yamayeza.

Ishishini lezithambiso: I-HPMC isetyenziswa njengento etyebisayo kunye nezinzisi kwiimveliso ezininzi zokuthambisa, ezifana neloshini, iikhrimu, kunye neshampu.

Umzi-mveliso wokwakha: I-HPMC isetyenziswa njenge-binder, i-thickener, kunye ne-arhente yokugcina amanzi kwiimveliso ezisekwe kwisamente, ezifana nodaka, i-grout, kunye nokuncamatheliswa kweethayile.

Ukuqukumbela

I-Hydroxypropyl methyl cellulose (HPMC) i-polymer eguquguqukayo enezinto ezininzi eziluncedo, ezibandakanya ukunyibilika kwamanzi, i-viscosity, ukuzinza kwe-thermal, iipropati zokwenza ifilimu, kunye neempawu zokunamathela. HPMC isetyenziswa kuluhlu olubanzi amashishini, kuquka ukutya, amayeza, izinto zokuthambisa, kunye nolwakhiwo. Ikhono layo lokwenza iifilimu ezinamandla, eziguquguqukayo kunye nokuphucula ukusebenza kunye nokusebenza kweemveliso ezahlukeneyo kwenza ukuba ibe yinto ebalulekileyo ekuqulunqweni kwezinto ezininzi. I-HPMC ikwakhuselekile ukuba ingasetyenziswa ekutyeni nakwimveliso yamayeza kwaye yamkelwe ngamaqumrhu alawulayo kwihlabathi jikelele. Ngaloo ndlela, i-HPMC iyipolymer ebalulekileyo kwaye isetyenziswa ngokubanzi edlala indima ebalulekileyo kwizicelo ezininzi ezahlukeneyo.