Umunthu wa khwangwala wa hec ndi hpmc

Kuyamba kwa HeC (Hydroxyethyl Cellulose) ndi HPMC (Hydroxypropyll Methylcellulose)
Hydroxyethyl cellulose (hec) ndi hydroxypropyll methylcellulose (hpmc) ndi ma cellulose ogwiritsa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza, chisamaliro, chakudya. Onse a Hec ndi Hopmc amachokera ku cellulose, polymer omwe amapezeka kwambiri opezeka m'makoma a cell, omwe amadziwika kuti ndi mphamvu ndi kusiyanasiyana.

Hydroxyethyl cellulose (hec)
Kapangidwe ka mankhwala ndi katundu
Hydroxyethyl cellulose ndi policsent, kusungunuka madzi osungunuka ochokera ku celluluse kudzera munjira yobwezeretsa. Kapangidwe kake kamaphatikizapo magulu a Ethylene oxide (-ch2ch2oh) amaphatikizidwa ndi msana wa m'mphepete mwa nyanjayo, zomwe zimawonjezera kusungunuka kwamadzi ndikukula. Hec imawoneka ngati yoyera mpaka yoyera yoyera ndipo imadziwika chifukwa cha ma visction ndi luso labwino kwambiri.

Kaphatikizidwe
Kaphatikizidwe wa Hec kumaphatikizapo zomwe zimakhudza cellulose ndi ethylene oxide pansi pa milkaline. Njirayo imaphatikizaponso:

Alkirization: Cellulose imathandizidwa ndi alkali wamphamvu, monga sodium hydroxide, kupanga cellulose.
Kusintha: Ethylene oxide amawonjezeredwa ku alkalinile cellose, chifukwa cha mapangidwe a hydroxethyl cellulose.
Kulowerera ndi kuyesedwa: Kusakaniza komwe kuchita kumalowerera ndale ndikutsukidwa kuti achotse zopangidwa ndi zitsulo zomaliza.

Mapulogalamu
Hec amagwiritsidwa ntchito pa mafakitale osiyanasiyana chifukwa cha zovuta zake:

Mankhwala ogwiritsa ntchito mankhwala: ogwiritsidwa ntchito ngati wothandizira kukula, makanema-akale, ndi okhazikika m'magulu akhungu, mafuta, mafuta.
Kusamalidwa Kwaumwini: Kupezeka mu shampoos, zowongolera, zotupa, ndi sopos ngati thicerner ndi emulsifier.
Utoto ndi zokutira: Zimawonjezera mafakisoni, kusungidwa kwamadzi, komanso katundu wamavidiyo mu utoto wochokera m'madzi.
Ntchito Yomanga: Imagwira ntchito ngati bander, thiccener, ndi wosuta wosungidwa wamadzi mu simenti ndi mankhwala a gypsum.
Ubwino

Hec imapereka zabwino zingapo:

Chikhalidwe chosakhala: chimapangitsa kuti chikhale chogwirizana ndi mitundu yosiyanasiyana ya ionic komanso zowonjezera zopanda inic.
Kusungunuka kwamadzi: kusungunuka mosavuta m'madzi ozizira komanso otentha, ndikupanga mayankho omveka bwino.
Kugwiritsa ntchito bwino kwambiri: kumapereka mphamvu ya mafashoni ambiri.
Zoyenera kuwongolera: Kugwiritsa ntchito zogwiritsidwa ntchito pazinthu zosamalira zamankhwala komanso zaumwini.

Hydroxypropyl methylcellulose (hpmc)
Kapangidwe ka mankhwala ndi katundu
Hydroxypropyll methylcellulose ndi ether celluse ether, yodziwika ndi magulu a hydroxyl molekyu ndi methox (-Och3) magulu. Kusintha kumeneku kumapereka katundu wapadera wa matenthedwe ndikupangitsa kuti HPMC isungunuke mu madzi ozizira komanso otentha. HPMC imapezekanso ngati yoyera mpaka yoyera.

Kaphatikizidwe
Kupanga kwa HPMC kumaphatikizapo njira yofananira yofananira:

Alkilization: Cellulose imathandizidwa ndi alkali wamphamvu kuti apange cellikalo.
Kusintha kwa methyl chloride ndi propylene oxide kumawonjezeredwa pa cellulose, zomwe zimayambitsa ma hydroxypropylllll.
Kusalowerera ndi kuyeretsa: kusakaniza kumakhala kosasinthika, ndipo zoyeretsa zimachitika kuti zitheke kugula zinthu komaliza.

Mapulogalamu
Kusintha kwa HPMC kumalola kuti igwiritsidwe ntchito m'minda yosiyanasiyana:

Mankhwala ogulitsa: amachita monga wosuta, wonyoza, ndi zinthu zokutira mafilimu omwe ali pa piritsi.
Makampani Ogulitsa Zakudya: Amagwira ntchito ngati thickir, okhazikika, ndi emulsiferier zakudya zokonzedwa.
Ntchito yomanga: yogwiritsidwa ntchito ngati thicker, wosunga madzi, komanso womatira m'matangole a simenti ndi ma punya.
Kusamalidwa Kwaumwini: Kupezeka mwa mano a mano, shampoos, ndi zotupa chifukwa cha kukula kwake komanso kulimbitsa katundu.

Ubwino
HPMC imakondedwa pazifukwa zingapo:

Miyala yotentha: imawonetsa kutalika kwake pakutentha, zopindulitsa mu mankhwala ena ogulitsa mankhwala ndi chakudya.
Kusungunuka: kusungunuka mu madzi ozizira komanso otentha, kulola kugwiritsa ntchito mosiyanasiyana mosiyanasiyana.
Kutha kwa makanema: kumapangitsa makanema olimba, osinthika, abwino zokutira ndi mapangidwe omasulidwa.
Osadandaula: otetezeka kugwiritsa ntchito chakudya ndi ntchito zamankhwala, ndi zinthu zabwinobwino.

Kuyerekezera Hec ndi HPMC
Zofanana
Kuchokera: onsewa amachokera ku celluluse ndikugawana njira zofananira zophatikizira kusintha.
Katundu: Onse a Hec ndi HPMC sakhala maiko osungunuka, osungunuka madzi okhala ndi kukula kwamphamvu, kupanga mafilimu, komanso malo okhazikika.
Mapulogalamu: Amagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikizapo ma premaceuticals, chisamaliro chamunthu komanso zomanga.
Kusiyana
Mankhwala Omwe: Hec ali ndi magulu a hydroxyethyl, pomwe hpmc ali ndi methoxy ndi hydroxypyl.
Mafuta amafuta: hpmc amawonetsa mizere yotentha, mosiyana ndi hec, ndikupanga kukhala koyenera kugwiritsa ntchito njira zomwe gelect-inpect amapindulitsa.
Kusungunuka: Pomwe onse ndi osungunuka madzi, kupezeka kwa ma hydroxypyl magulu ku HPMC kumathandizira kusungunuka kwake mosungunuka komwe kumazungulira ndi HeC.

Hydroxyethyl cellulose (hec) ndi hydroxypropyl mankhwala ofunikira ndi mafakitale ambiri omwe ali ndi mitundu yawo yapadera yamafashoni ndi magwiridwe antchito. Hec imayamikiridwa kwambiri chifukwa cha kukweza kwake kwambiri komanso kuphatikizidwa ndi zowonjezera zosiyanasiyana, pomwe HPMC imasiyanitsidwa ndi mipweya yake yotentha komanso yochulukitsa. Kumvetsetsa komwe, kapangidwe kake ka anthu awa kumathandiza posankha ma cellulose oyenera a mafakitale apadera, potero amalimbikitsa kuchita bwino ndi zinthu zomaliza.