Kodi pali kusiyana kotani pakati pa methylcellulose ndi hydroxypropyll methylcellulose?

Methylcellulose (MC) ndi Hydroxypropyl (HPMC) ndi zitsulo ziwiri zofala zomwe zimakhala ndi kusiyana kofunikira pamankhwala ndi magwiridwe antchito. Nayi kufanizira mwatsatanetsatane kwa iwo:

1. Kusiyana kwa mankhwala
Methylcellulose (MC):
Methylcellulose ndi mankhwala opaka cellulose omwe amapangidwa poyambitsa methyl (-ch₃) magulu mamolekyulu achilengedwe. Magulu ena a hydroxyl (-Oh) mu celluluse amasinthidwa ndi magulu a methyl (-Och₃) kupanga methylcelulose. Nthawi zambiri digiri ya methylustition ya methylcellulose ili pafupifupi 1.5 mpaka 2.5 methyl.

Hydroxypropyl methylcellulose (hpmc):
Hydroxypylropyl ndi mankhwala osokoneza bongo omwe amayambitsa hydroxypropyl (-c₃h₇oh magulu a methylcellulose. Kukhazikitsidwa kwa ma hydroxypyl magulu amapangitsa hpmc kukhala ndi kusungunuka bwino ndi magwiridwe antchito. Kapangidwe kake kamakhala ndi magawo awiri, methyl ndi hydroxypyl.

2. Kusiyana kwa kusungunuka
Methylcellulose (MC) imakhala ndi madzi okwanira madzi olimba, makamaka m'madzi ofunda, imatha kupanga yankho la colloidal. Kusungunuka kwake kumadalira pamlingo wa methylation. Kukwera kwambiri kwa methylation, ndiko kusungunuka kwamadzi.

Hydroxypylm methylcellulose (hpmc) amakhala ndi madzi abwino kwambiri kuposa methylcelulose. Chifukwa cha kukhazikitsidwa kwa magulu a hydroxypyl, hpmc amathanso kupasuka bwino m'madzi ozizira. Poyerekeza ndi methylclulose, hpmc ili ndi robility wamba, makamaka imatha kusungunuka mwachangu pamitenthedwe yotsika.

3. Kusiyana kwa zinthu zakuthupi
Methylcellulose (MC) nthawi zambiri imakhala yoyera yoyera kapena ma granules, ndipo yankho lake limakhala lowoneka bwino, ndi emulsization ndi mafuta okulirapo. Mu zothetsera zina, methyllulose amatha kupanga gel osakhazikika, koma "kutsuka" kumachitika pomwe mwatentha.

Hydroxypypyl methylcellulose (hpmc) ali ndi njira yapamwamba yosinthira ndi kukhazikika kwabwino. Mayankho a HPMC nthawi zambiri amakhala okhazikika pama phs ade ndipo sataya katundu wawo akamatenthedwa ngati MC, motero amagwiritsidwa ntchito kwambiri muzogulitsa zozama.

4. Zolemba
Chifukwa cha kusungunuka kwawo kwapadera ndi zinthu zakuthupi, methyllulose ndi hydroxypropyl methylcellulose amagwiritsidwa ntchito kwambiri m'minda yosiyanasiyana:

Methylcellulose (MC):
Monga thickener, emulsifier ndi kukhazikika, imagwiritsidwa ntchito kwambiri pazambiri zamagulu, zodzoladzola ndi mankhwala osokoneza bongo.
M'mabuku omanga, MC nthawi zambiri amagwiritsidwa ntchito mu simenti, gypsum, mataye a tile ndi zinthu zina ngati wothandizira madzi ndi kukula.
Amagwiritsidwanso ntchito ngati zowonjezera zokutira ndi inks.

Hydroxypropyl methylcellulose (hpmc):
Monga thicker, emulsifier ndi sherebilifrift, hpmc imagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala, makamaka pokonzekera mankhwala osokoneza bongo.
Mu makampani omanga, HPMC imagwiritsidwa ntchito kukhoma la khoma, matope omata, matayala omata ndi zinthu zina kuti apatse chotsatsa ndi kukana madzi.
M'makampani azakudya, hpmc nthawi zambiri amagwiritsidwa ntchito ngati thicker, ribizeli, emulsifier, etc.
Mu zodzikongoletsera, hpmc imatha kugwiritsidwa ntchito ngati Humectict, gel wakale, etc.

5. Kukhazikika ndi kukana kutentha
Methylcellulose (MC) imagwirizana ndi kutentha kwambiri. Makamaka akamatenthedwa, Mc yankho ndi kuthyolako, zomwe zimapangitsa kuti zitheke. Imasungunuka m'madzi otentha, koma osasungunuka m'madzi ozizira.

Poyerekeza ndi MC, hydroxypypyl methylcellulose (hpmc) ali ndi bata lokhala ndi matenthedwe ndi chofanizira

6. Mtengo ndi msika
Chifukwa cha ntchito yopanga ndi mtengo waukulu wa hpmc, nthawi zambiri zimakhala zokwera mtengo kuposa methylcellulose. Muzosankha zina ndi zofunikira zochepa, methyllulose zingakhale chisankho chotsika mtengo, pomwe HPMC imafala kwambiri m'malo ofunikira magwiridwe antchito, monga mapangidwe omanga mafakitale komanso zida zapamwamba kwambiri.

Ngakhale onse MethyLelose (MC) ndi Hydroxypylrosell (HPMC) amachokera ku cellose ya chilengedwe ndipo amagwiritsanso ntchito ma cellulose ambiri, nyumba zawo zamankhwala, zinthu zofunsira ndizosiyana. HPMC imagwiritsidwa ntchito kwambiri m'minda yambiri (monga mankhwala opangira mankhwala, zomangamanga ndi zodzikongoletsera) chifukwa cha kukhazikika kwake kokhazikika komanso kukhazikika kwa matenthedwe, pomwe MC imagwiritsidwa ntchito kwambiri pamapulogalamu ena otsika mtengo.