Hydroxylopenyl cellulose (HPMC) yog ib hom polymer uas siv dav hauv ntau yam kev siv xws li tshuaj, khoom noj, tsev thiab tshuaj pleev ib ce. Nws yog ib qho cellulose derivative thiab tsim cov kua nplaum coagulant rau ntawm hydrophilic. Daim ntawv ntshiab ntawm HPMC yog ib qho hmoov dawb tsis muaj saj uas yaj hauv dej los ua cov kua nplaum pob tshab.
HPMC qhov kev ua kom tsis zoo yog cov txheej txheem ntawm kev ntxiv lossis sib xyaw cov khoom ntshiab rau lwm cov ntaub ntawv kom hloov nws cov yam ntxwv lossis txo cov nqi tsim khoom. Kev doping hauv HPMC tuaj yeem hloov pauv cov khoom siv lub cev, tshuaj lom neeg thiab cov khoom siv kho tshuab ntawm HPMC. HPMC siv ntau tus neeg sawv cev doping, suav nrog cov hmoov txhuv nplej siab, cov protein txiv hmab, cellulose, sucrose, glucose, carboxymethyl cellulose sodium (CMC) thiab polyethylene ethylene (PEG). Kev ntxiv cov neeg laus no yuav ua rau puas tsuaj rau qhov zoo, kev nyab xeeb thiab kev ua haujlwm ntawm HPMC.
Muaj ntau qhov sib txawv ntawm HPMC ntshiab thiab cellulose adulteration:
1. Kev Ntshiab: Qhov sib txawv tseem ceeb ntawm HPMC ntshiab thiab cellulose adulteration yog lawv qhov kev ntshiab. HPMC ntshiab yog ib yam khoom tsis muaj cov khoom tsis huv lossis cov khoom ntxiv. Ntawm qhov tod tes, adulteration cellulose muaj lwm yam khoom, uas tej zaum yuav yog lwm yam khoom uas cuam tshuam rau lawv qhov zoo thiab cov yam ntxwv.
2. Cov yam ntxwv ntawm lub cev: HPMC ntshiab yog ib hom hmoov dawb, tsis muaj saj, yaj hauv dej los ua cov kua nplaum pob tshab. HPMC uas ua rau neeg tsis sib haum xeeb yuav muaj cov yam ntxwv ntawm lub cev sib txawv, nyob ntawm hom thiab ntau npaum li cas ntawm cov neeg ua kom neeg tsis sib haum xeeb ntxiv. Kev nkag mus rau hauv cov khoom yuav cuam tshuam rau qhov solubility, viscosity thiab xim ntawm cov khoom.
3. Cov yam ntxwv tshuaj lom neeg: HPMC ntshiab yog cov polymer ntshiab heev nrog cov yam ntxwv tshuaj lom neeg sib xws. Kev nkag mus rau lwm cov ntaub ntawv tuaj yeem hloov cov yam ntxwv tshuaj lom neeg ntawm HPMC, uas cuam tshuam rau nws cov haujlwm thiab kev ruaj ntseg.
4. Kev Nyab Xeeb: Kev siv cov cellulose uas tsis muaj kev sib xyaw ua ke yuav ua rau muaj kev phom sij rau kev noj qab haus huv vim tias cov kev sib xyaw ua ke no yuav muaj cov tshuaj lom lossis cov tshuaj lom. Cov HPMC uas tsis muaj kev sib xyaw ua ke kuj tseem yuav cuam tshuam nrog lwm cov tshuaj hauv txoj kev uas tsis tuaj yeem kwv yees tau, uas ua rau muaj teeb meem kev noj qab haus huv loj heev.
5. Tus nqi: Cov cellulose uas tau hloov kho pheej yig dua li HPMC ntshiab, vim tias kev ntxiv cov neeg sawv cev doping yuav txo cov nqi tsim khoom. Txawm li cas los xij, kev siv cov tshuaj HPMC uas tsis muaj txiaj ntsig hauv kev tsim tshuaj lossis lwm yam khoom yuav ua rau puas tsuaj rau qhov zoo thiab kev ua haujlwm ntawm cov khoom.
Tag nrho hauv txhua qhov, HPMC ntshiab yog cov polymer ntshiab thiab muaj kev nyab xeeb heev, nrog rau cov yam ntxwv tshuaj lom neeg thiab lub cev sib xws. Kev sib xyaw nrog lwm yam tshuaj tuaj yeem hloov pauv cov yam ntxwv ntawm HPMC, yog li ua rau puas tsuaj rau qhov zoo thiab kev nyab xeeb ntawm cov khoom. Yog li ntawd, HPMC ntshiab yuav tsum tau siv rau hauv kev tsim tshuaj, khoom noj, tsev thiab lwm yam khoom.
Lub sijhawm tshaj tawm: Lub Rau Hli-26-2023