Ọkwa kemịkalụ kwa ụbọchị hydroxypropyl methylcellulose bụ polymer sịntetik nke sitere na cellulose eke sitere na mgbanwe kemịkalụ. Cellulose ether bụ ihe sitere na cellulose eke. Ihe mmepụta nke cellulose ether dị iche na polymers sịntetik. Ihe kachasị mkpa ya bụ cellulose, ngwakọta polymer eke.
N'ihi ihe dị iche iche nke usoro cellulose eke, cellulose n'onwe ya enweghị ike imeghachi omume na ndị ọrụ etherification. Otú ọ dị, mgbe ọgwụgwọ nke onye na-amụba ihe, a na-ebibi njikọ siri ike hydrogen n'etiti ụdọ molecular na agbụ, na ntọhapụ na-arụ ọrụ nke hydroxyl otu na-aghọ cellulose alkali na-emeghachi omume. Mgbe mmeghachi omume nke onye na-ahụ maka etherifying, a na-atụgharị otu -OH ka ọ bụrụ otu ma ọ bụ otu Nweta cellulose ether. 200,000-viscosity hydroxypropyl methylcellulose maka "Max" kwa ụbọchị kemịkalụ bụ ntụ ntụ na-acha ọcha ma ọ bụ dịtụ odo odo, nke na-enweghị isi, enweghị ụtọ na nke na-adịghị egbu egbu. Enwere ike igbari ya na mmiri oyi na ihe mgbaze agwakọta nke ihe ndị dị ndụ iji mepụta ngwọta viscous na-enweghị atụ.
Mmiri mmiri na-eji mmiri eme ihe nwere ọrụ elu, nghọta dị elu, nkwụsi ike siri ike, ma ọ dịghị emetụta pH mgbe agbazere na mmiri. Ọ na-enwe mmetụta na-ekpo ọkụ na antifreeze na shampoos na gels ịsa ahụ, ma nwee njide mmiri na ihe dị mma na-emepụta ihe nkiri maka ntutu na akpụkpọ ahụ. Site na mmụba dị nkọ nke akụrụngwa akụrụngwa, iji cellulose (antifreeze thickener) na ncha ntutu na gel ịsa ahụ nwere ike belata ọnụ ahịa ya nke ukwuu wee nweta nsonaazụ achọrọ.
Oge nzipu: Eprel-21-2023