Impembelelo yomxholo we-methoxy kunye nomxholo we-hydroxypropoxy kwi-HPMC

Umxholo we-methoxy kunye nomxholo we-hydroxypropoxy kwi-Hydroxypropyl Methylcellulose (HPMC) ichaphazela kakhulu iipropati zayo kunye nokusebenza kwizicelo ezahlukeneyo.Nantsi indlela iparameter nganye eyichaphazela ngayo i-HPMC:

1. Umxholo weMethoxy:
   • Umxholo we-methoxy ubhekiselele kwiqondo lokutshintshwa (DS) kwamaqela e-methoxy kumqolo we-cellulose.Imisela i-hydrophobicity iyonke ye-HPMC.
   • Umxholo ophezulu we-methoxy ukhokelela ekunyibilikeni kwamanzi aphezulu kunye nobushushu obuphantsi be-gelation.Ii-HPMCs ezinomxholo ophezulu we-methoxy zinyibilika ngokulula ngakumbi emanzini abandayo, zibenze zilungele usetyenziso apho kufuneka ukufakwa kwamanzi ngokukhawuleza.
   • Umxholo we-Methoxy uchaphazela isakhono sokuqina se-HPMC.Ngokuqhelekileyo, i-DS ephezulu iphumela kwi-viscosity ephezulu kwiindawo eziphantsi.Le propati inenzuzo kwizicelo ezinjengama-adhesives, apho ukugcinwa kwamanzi okuphuculweyo kunye ne-viscosity ifunwa.
   • Umxholo ophezulu we-methoxy unokuchaphazela iipropati zokwenza ifilimu, ukunamathela, kunye nokuhambelana nezinye izithako.Inokuthi ibe negalelo ekuqulunqweni kweefilimu eziguquguqukayo kunye nezidibeneyo kwizicelo ezifana neengubo kunye neepilisi zamachiza.
2. Umxholo weHydroxypropoxy:
   • Umxholo we-hydroxypropoxy ubhekiselele kwiqondo lokutshintshwa (i-DS) yamaqela e-hydroxypropyl kumqolo we-cellulose.Imisela i-hydrophilicity iyonke kunye neempawu zokugcina amanzi ze-HPMC.
   • Ukwandisa umxholo we-hydroxypropoxy kwandisa amandla okugcina amanzi e-HPMC.Iphucula amandla e-HPMC okugcina amanzi ekuqulunqweni, okukhokelela ekusebenzeni ixesha elide kunye nokubambelela okungcono kwizinto ze-cementitious, ezifana ne-mortar kunye ne-tile adhesives.
   • Umxholo we-Hydroxypropoxy nawo uchaphazela ubushushu be-gelation kunye neempawu zokwenza ifilimu ye-HPMC.I-DS ephezulu yamaqela e-hydroxypropyl yehlisa ukushisa kwe-gelation kwaye inokukhokelela ekuphuculeni ukubunjwa kwefilimu kunye nokubambelela kwiingubo kunye nokusetyenziswa kwamayeza.
   • Umlinganiselo womxholo we-methoxy kumxholo we-hydroxypropoxy uchaphazela ibhalansi yonke yeempawu ze-hydrophilic kunye ne-hydrophobic kwi-HPMC.Ngokulungelelanisa lo mlinganiso, abavelisi banokulungelelanisa ukusebenza kwe-HPMC ukuhlangabezana neemfuno ezithile zesicelo, ezifana ne-viscosity, ukugcinwa kwamanzi, kunye nokwakheka kwefilimu.

Isishwankathelo, umxholo we-methoxy kunye nomxholo we-hydroxypropoxy we-HPMC udlala indima ebalulekileyo ekumiseleni ukunyibilika kwayo, amandla okuqina, ukugcinwa kwamanzi, ubushushu be-gelation, iipropati zokwenza ifilimu, ukunamathela, kunye nokuhambelana nezinye izithako.Ngokulawula ezi parameters, abavelisi banokuvelisa i-HPMC enoluhlu olubanzi lweepropathi ezifanelekileyo kwizicelo ezahlukeneyo kumashishini afana nokwakha, amayeza, ukutya, izithambiso, kunye nokhathalelo lomntu.