Onse hydroxypypyl methylcellulose ndi hydroxethyl cellulose ndi cellulose

Hydroxypropyl methylcellulose (hpmc)Ndipo hydroxyethyl cellulose (hec) ndi ma cellulose ofunikira kwambiri omwe amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha malo awo apadera. Pomwe onse amachokera ku cellulose, ali ndi mitundu yosiyanasiyana ya mankhwala ndikuwonetsa mawonekedwe ndi ntchito zosiyanasiyana.

1. Kuyambitsa kwa cellulose zochokera ku cellulose:
Cellulose ndi polysacdide wachilengedwe wopezeka makhoma a cell, okhala ndi maunyolo a mzere wa mayunitsi a glucose omwe amalumikizidwa ndi β (1 → 4) zomangira. Ma cellulose amapezeka mwa kusintha kwa cellulose yosinthika kuti ipititse patsogolo katundu wina kapena kuyambitsa magwiridwe antchito atsopano. HPMC ndi Hec ndi ziphuphu ziwiri zogwiritsidwa ntchito kwambiri m'mafakitale kuyambira mankhwala omanga.

2. Kaphatikizidwe:
HPMC imapangidwa ndi cellulose ndi ma prouluse oxide kuti ayambitse magulu a hydroxypyl ndipo pambuyo pake methyl chloride kuyambitsa magulu a meya. Izi zimabweretsa m'malo mwa magulu a hydroxyl mu unyolo wa cellulose, zogulitsa ndi zosungunulira bwino ndikupanga mawonekedwe a makanema.

Msuzi, kumbali inayo, imapangidwa ndi cellose cellose ndi ethylene oxide kuti aphatikize magulu a hydroxyethyl. Mulingo wa zolowetsa (DS) mu HPMC ndi Hec imatha kulamulidwa ndi kusintha zochitika, zomwe zimakhudza katundu wawo monga mafakini.

3. Kapangidwe ka mankhwala:
HPMC ndi hec imasiyana m'mitundu ya magulu ophatikizira omwe amaphatikizidwa ndi msana wa m'Chune. HPMC ili ndi ma hydroxypyl ndi magulu a methyl, pomwe hec muli magulu a hydroxyethyl. Awa olowa m'malo mwapadera pamachitidwe aliwonse ochulukitsa, kukhumudwitsa machitidwe awo munthawi zosiyanasiyana.

4. Mphamvu zathupi:
Onse a HPMC ndi Hec ndi osungunuka madzi osungunuka madzi ndi katundu wabwino kwambiri. Komabe, akuwonetsa kusiyana kwa magazi, mphamvu zamankhwala, ndi luso la mafilimu. HPMC nthawi zambiri ili ndi ma visn apamwamba poyerekeza ndi hec kumodzi ofanana, ndikupanga kukhala koyenera kugwiritsa ntchito ntchito yofunika kwambiri.

Kuphatikiza apo, HPMC imapanga makanema owoneka bwino chifukwa cha methyl m'malo mwake, pomwe hec imapangika ndi mafilimu osinthika. Kusiyanaku kwa makanema kumapangitsa kuti ntchito iliyonse ikhale yolondola pamankhwala enaake mu mankhwalawa, zopangidwa ndi anthu, komanso mafakitale odya.

5. Ntchito:
5.1 Makampani ogulitsa mankhwala:
Onse a HPMC ndi Hec amagwiritsidwa ntchito kwambiri m'mapangidwe ogulitsa mankhwala ngati omanga, otsatsa, ndi othandizira mafilimu. Amasintha za piriki, kuwongolera mankhwala osokoneza bongo, ndikuwonjezera pakamwa pazinthu zamadzimadzi. HPMC imakondedwa chifukwa cha kukhazikika chifukwa cha kuchuluka kwake kwa hydraction, pomwe hec imagwiritsidwa ntchito pothekera kwa ophthalmic ndi zonona chifukwa chomveka bwino.

5.2 Makampani omanga:
M'makampani omanga,HpmcndiHecamagwiritsidwa ntchito ngati zowonjezera m'magawo a simenti, monga mativa, ofuula, ndi matembenuzidwe. Amathandizanso, kusungidwa kwamadzi, komanso kutsatira magwiridwe antchito komanso kulimba kwa malonda omaliza. HPMC nthawi zambiri imakondedwa chifukwa cha kuchuluka kwake kwa madzi osungika, omwe amachepetsa kusokonekera ndikusintha nthawi.

5.3 Zogulitsa Zaumwini:
Mapulogalamu onse onsewa amapeza mapulogalamu pazinthu zosamalira anthu monga shampoos, zodzola, ndi mafuta ngati othandizira, emulsifiers, ndi okhazikika. Hec imapereka kapangidwe kosalala komanso kowoneka bwino pakupanga, kumapangitsa kuti malonda azisamalira tsitsi ndi khungu. HPMC, ndi katundu wake wapamwamba kwambiri wamakanema, amagwiritsidwa ntchito mu ma sunscreens komanso mapangidwe odzikongoletsa omwe amafunikira madzi ndi kuvala kosatha.

5.4 Makampani ogulitsa zakudya:
Mu makampani ogulitsa zakudya, HPMC ndi Hec imagwira ntchito ngati othandizira kukula, okhazikika, ndi zovala zosiyanasiyana kuphatikizapo msuzi, zotavala, ndi zakudya. Amasintha pakamwa pakamwa, kupewa syneresis, ndikuwonjezera malingaliro a zakudya. HPMC nthawi zambiri imakondedwa chifukwa cha kumveka kwake komanso kukhazikika kwa kutentha, ndikupangitsa kukhala koyenera kugwiritsa ntchito ma gels owoneka bwino ndi emulsions wokhazikika.

6. Kumaliza:
Hydroxypypyl methylcellulose (hpmc) ndi hydroxyethyl cellulose (hec) ndi zotumphukira za cellulose zomwe zimapangidwa ndi mitundu, ndi ntchito. Ngakhale onse ali ndi katundu wabwino kwambiri komanso wa makanema, amawonetsa kusiyana m'matumba, kumverera kwamanema, ndi machitidwe a hydrate. Kumvetsetsa izi ndikofunikira posankha zochokera yoyenera pazofunsira mwatsatanetsatane mafakitale monga mankhwala, ndi chakudya. Monga kafukufuku akupitilizabe kupita patsogolo, kusintha kwa zinthu zina ndi magwiridwe antchito a ma cellulose omwe akuyembekezeredwa, amathandizira kupitiriza m'malo osiyanasiyana a matikiti.