HPMC ma ọ bụ hydroxypropyl methylcellulose bụ ihe eji eme ihe n'ọtụtụ ụlọ ọrụ gụnyere ọgwụ, ihe ịchọ mma na nri. A na-eji ya eme ihe n'ọtụtụ ebe dị ka thickener na emulsifier, na viscosity ya na-agbanwe dabere na okpomọkụ ọ na-ekpughere ya. N'isiokwu a, anyị ga-elekwasị anya na mmekọrịta dị n'etiti viscosity na okpomọkụ na HPMC.
A kọwapụtara viscosity dị ka ihe nleba anya nke mmiri na-eguzogide ịgbasa. HPMC bụ ihe nwere ọkara siri ike nke nha nguzogide ya dabere na ihe dị iche iche, gụnyere okpomọkụ. Iji ghọta mmekọrịta dị n'etiti viscosity na okpomọkụ na HPMC, anyị kwesịrị ibu ụzọ mara otú e si emepụta ihe ahụ na ihe e ji eme ya.
HPMC sitere na cellulose, polymer na-emekarị na osisi. Iji mepụta HPMC, cellulose kwesịrị ka ejiri propylene oxide na methyl chloride gbanwee kemịkalụ. Mgbanwe a na-ebute nguzobe nke hydroxypropyl na methyl ether n'ime agbụ cellulose. Ihe si na ya pụta bụ ihe siri ike nke nwere ike ịgbaze na mmiri na ihe ndị na-emepụta ihe na-edozi ahụ ma jiri ya mee ihe n'ụdị dị iche iche, gụnyere dịka mkpuchi maka mbadamba nkume na dịka onye na-emepụta ihe oriri, n'etiti ndị ọzọ.
Viscosity nke HPMC na-adabere na ntinye nke ihe na okpomọkụ nke ekpughere ya. N'ozuzu, viscosity nke HPMC na-ebelata site na ụbara itinye uche. Nke a pụtara na mkpokọta HPMC dị elu na-ebute viscosities dị ala yana ọzọ.
Otú ọ dị, mmekọrịta dị n'etiti viscosity na okpomọkụ dị mgbagwoju anya karị. Dị ka e kwuru na mbụ, viscosity nke HPMC na-abawanye na ibelata okpomọkụ. Nke a pụtara na mgbe HPMC na-edobe okpomọkụ dị ala, ike ọ na-asọ na-ebelata, ọ na-aghọwanye viscous. N'otu aka ahụ, mgbe HPMC na-edo onwe ya n'okpuru okpomọkụ, ike ya na-asọba na-abawanye na viscosity ya na-ebelata.
Enwere ihe dị iche iche na-emetụta mmekọrịta dị n'etiti okpomọkụ na viscosity na HPMC. Dịka ọmụmaatụ, solutes ndị ọzọ dị na mmiri mmiri nwere ike imetụta viscosity, dị ka pH nke mmiri mmiri. N'ozuzu, Otú ọ dị, enwere mmekọrịta dị n'etiti viscosity na okpomọkụ na HPMC n'ihi mmetụta okpomọkụ na njikọ hydrogen na mmekọrịta molecular nke agbụ cellulose na HPMC.
Mgbe HPMC na-edobe okpomọkụ dị ala, agbụ cellulose na-esiwanye ike, nke na-eduga n'ịba ụba hydrogen bonding. Njikọ hydrogen ndị a na-eme ka ihe na-eguzogide ihe na-asọpụta, si otú ahụ na-amụba viscosity ya. N'aka nke ọzọ, mgbe HPMC nwere okpomọkụ dị elu, agbụ cellulose na-agbanwewanye nke ọma, nke mere ka njikọ hydrogen dị ntakịrị. Nke a na-ebelata ike nke ihe ahụ na-asọba, na-ebute viscosity dị ala.
Ọ dị mma ịmara na ọ bụ ezie na a na-enwekarị mmekọrịta dị n'etiti viscosity na okpomọkụ nke HPMC, nke a abụghị mgbe niile maka ụdị HPMC niile. Kpọmkwem mmekọrịta dị n'etiti viscosity na okpomọkụ nwere ike ịdịgasị iche dabere na usoro nrụpụta yana akara ọkwa HPMC ejiri.
HPMC bụ ihe na-arụ ọrụ dị iche iche ejiri mee ihe n'ọtụtụ ụlọ ọrụ dị iche iche maka ihe na-eme ka ọ sie ike na emulsifying. Viscosity nke HPMC na-adabere n'ọtụtụ ihe, gụnyere ntinye nke ihe na okpomọkụ nke ekpughere ya. N'ozuzu, viscosity nke HPMC na-adaba na okpomọkụ, nke pụtara na ka okpomọkụ na-ebelata, viscosity na-abawanye. Nke a bụ n'ihi mmetụta okpomọkụ na njikọ hydrogen na mmekọrịta molekụla nke agbụ cellulose n'ime HPMC.
Oge nzipu: Sep-08-2023