IHydroxypropyl methylcellulose (HPMC)i-polymer engeyiyo i-ionic, i-semi-synthetic esetyenziswa ngokubanzi kwizinto zokwakha, amayeza, ukutya, izinto zokuthambisa kunye namanye amasimi oshishino.
1. Iimpawu zomzimba kunye neekhemikhali
I-HPMC yipolima eyenziwe ngeselulosi yezityalo zendalo ngokuguqulwa kweekhemikhali. Ngokuqhelekileyo imhlophe okanye i-off-white powder, ayinancasa, ayinavumba kwaye ayinayo ityhefu. Inonyibiliko olulungileyo lwamanzi kwaye inokunyibilika kumanzi abandayo okanye ashushu ukwenza isisombululo se-colloidal esicacileyo okanye esincinci. Iimpawu zayo zokunyibilika zichatshazelwa ngumgangatho wokutshintshwa, ubunzima bemolekyuli kunye nobushushu.
2. Ukutyeba
I-HPMC ineempawu ezigqwesileyo zokujiya kwaye inokunyusa kakhulu i-viscosity yesisombululo, iyenze isetyenziswe njenge-thickener kumashishini afana nezixhobo zokwakha, iingubo, kunye namayeza. Ngokomzekelo, kudaka lwesamente, kunokuphucula ukusebenza kwayo kunye nokusebenza kokwakhiwa.
3. Ukugcinwa kwamanzi
I-HPMC inokunciphisa ngokufanelekileyo i-evaporation yamanzi kunye nokuphucula umthamo wokugcinwa kwamanzi kwizinto. Le propati ibaluleke kakhulu kushishino lokwakha. Umzekelo, ukongeza i-HPMC kudaka lwesamente kunye ne-gypsum-based material inokwandisa ixesha labo elivulekileyo, ukuphucula umgangatho wokwakha, kunye nokunciphisa ukuqhekeka.
4. Ukuncamathela
Ngenxa yeempawu zayo zokuncamathela ezilungileyo, i-HPMC isetyenziswa ngokubanzi kwi-adhesives yethayile, i-coatings, i-adhesives kunye nezinye iindawo. Kwizinto zokuncamathelisa iithayile, inokomeleza amandla okudibanisa kunye nokuphucula ukusebenziseka lula kwemisebenzi yokwakha.
5. Ukuthambisa
I-HPMC ibonisa ukuthambisa okulungileyo kwisisombululo samanzi, okwenza kube yinto efanelekileyo yokuthambisa kwimveliso yokwakha, iingubo, izithambiso kunye namacwecwe amayeza, ukuphucula ukusebenza kwemveliso.
6. Umsebenzi womphezulu
Isakhiwo se-molecular ye-HPMC iqulethe amaqela e-hydrophilic kunye ne-hydrophobic, eyenza ibe nomsebenzi othile wendawo kwaye inokudlala indima ye-emulsification, ukumiswa, ukusabalalisa kunye nokunye. Ngoko ke, isetyenziselwa iingubo, i-emulsion polymerization, i-detergents kunye nezinye iimveliso.
7. Ukumelana netyuwa kunye nokuzinza kwe-pH
I-HPMC yinto engeyiyo i-polymer, ngoko ke izinzile kwi-electrolytes kwaye akukho lula ukugawula ngeetyuwa ezingaphiliyo. Ukongeza, izinzile kuluhlu lwe-pH ye-3 ukuya kwi-11 kwaye ifanelekile kwiindawo ezahlukeneyo.
8. Ipropati yokwenza ifilimu
I-HPMC inokwenza iifilimu ezicacileyo kwimiphezulu yezinto ezahlukeneyo ezinamandla omatshini kunye nokuguquguquka, ngoko ke isetyenziswa ngokubanzi kwiyeza (i-tablet coating), ukutya (ifilimu yokukhusela), i-coating (i-film-forming aid), njl.
9. Ukumelana nobushushu
I-HPMC inozinzo oluhle lwe-thermal kwaye ingakwazi ukugcina uzinzo oluthile lwesakhiwo kumaqondo obushushu aphezulu. Iza kungena kwi-thermal gelation kwisisombululo samanzi phantsi kwefuthe lokushisa, oko kukuthi, iya kwenza i-gel kwiqondo lokushisa elithile kwaye ichithe kwakhona emva kokupholisa. Le propati isetyenziswa ngokubanzi kumashishini okwakha, ukutya kunye namayeza.
10. Biocompatibility kunye nokhuseleko
I-HPMC yinto engeyiyo ityhefu, i-polymer engacaphukiyo kunye ne-biocompatibility efanelekileyo, ngoko isetyenziswa ngokubanzi kumashishini amayeza nokutya. Umzekelo, inokusetyenziswa kwiinkqubo zokukhutshwa kweziyobisi ngokuqhubekayo, i-eye drops thickeners, kunye nezinto ezityebisayo zokutya kunye ne-emulsifiers.
Iinkalo zesicelo
Ngenxa yeempawu zayo ezibalaseleyo zomzimba kunye neekhemikhali, i-HPMC isetyenziswa ngokubanzi kwezi nkalo zilandelayo:
Umzi-mveliso wokwakha: usetyenziswa njengesixhobo sokujiyisa kunye nokugcina amanzi kudaka lwesamente, ukuncamathelisa iithayile, umgubo weputty, kunye neemveliso zegypsum ukuphucula ukusebenza kolwakhiwo kunye nokuncamathela.
Umzi-mveliso wamachiza: usetyenziswa njenge-excipient yamachiza kwi-tablet encamathelayo, izinto ezikhutshwa ngokuqhubekayo, i-emulsifiers kunye nezizinzi, njl.
Umzi-mveliso wokutya: usetyenziswa njenge-thickener yokutya, i-emulsifier, kunye ne-stabilizer ye-ayisikrimu, ijusi, iisosi kunye nezinye iimveliso.
Ishishini lezithambiso: lisetyenziswa kwiimveliso zokhathalelo lwesikhumba, ishampu, intlama yamazinyo, njl. njl., ukubonelela ngokuqina, ukumiliselwa kunye neziphumo zokuthambisa.
Ishishini lokugquma: lisetyenziswa njenge-thickener kunye ne-film-forming aid kwi-coatings yamanzi ukuphucula ukufana kunye nokuzinza kwengubo.
HPMCyimathiriyeli egqwesileyo yepolymer eneempawu zokujiya, ukugcinwa kwamanzi, ukubunjwa kwefilimu, i-lubrication, kunye nokubambelela, kwaye ayinayo ityhefu kwaye ayinabungozi, ifanelekile kumashishini amaninzi. Isetyenziswa ngokubanzi kulwakhiwo, amayeza, ukutya, izithambiso, iingubo kunye nezinye iinkalo zokuphucula umgangatho wemveliso kunye nokusebenza. Kwixesha elizayo, ngenkqubela phambili yetekhnoloji kunye nokukhula kwemfuno yentengiso, umda wesicelo we-HPMC unokwandiswa ngakumbi kwaye udlale indima ebaluleke ngakumbi.
Ixesha lokuposa: Mar-27-2025