HPMC maka owuwu

Hydroxypropyl methyl cellulose (HPMC) bụ ether cellulose na-abụghị ionic nke sitere na cellulose eke. A na-eji ya eme ihe n'ọtụtụ ebe na-ewu ụlọ dị ka onye na-emekọ ihe, ihe nkedo, onye na-ekesa, emulsifier, onye na-emepụta ihe nkiri, colloid na-echebe, na onye nkwụsịtụ.

HPMC bụ ọcha na-acha ọcha, enweghị isi, ntụ ntụ na-adịghị egbu egbu. Ọ bụ soluble na mmiri oyi ma mepụta ngwọta doro anya, viscous. Ọ na-esighi ike na ihe mgbaze organic dị ka ethanol, acetone, na benzene. HPMC bụ polysaccharide anionic nke nwere eriri ahịrị nke nkeji D-glucose jikọtara ya na njikọ β-1,4-glycosidic. A na-emepụta ya site na mmeghachi omume nke methyl chloride na hydroxypropyl chloride na cellulose.

A na-eji HPMC eme ihe n'ọtụtụ ebe n'ihi ihe ndị mara mma. Enwere ike iji ya dị ka ihe na-eme ka ọ dịkwuo mma iji mee ka viscosity nke ngwọta mmiri dị elu ma melite ọrụ ciment na ngwa agha. A pụkwara iji ya mee ihe dị ka ihe nkedo iji mee ka adhesion nke simenti na ngwa agha dịkwuo mma. A pụkwara iji HPMC mee ihe dị ka onye na-ekesa iji belata ọchịchọ mmiri nke ciment na ngwa agha ma melite ọrụ ha. Na mgbakwunye, enwere ike iji HPMC dị ka emulsifier iji kwalite nkwụsi ike nke ciment na ngwakọta ngwa agha.

A pụkwara iji HPMC mee ihe dị ka onye na-emepụta ihe nkiri iji meziwanye nguzogide mmiri nke ciment na ngwa agha. Enwere ike iji ya dị ka colloid nchebe iji belata esemokwu elu nke ciment na ngwa agha ma melite arụmọrụ ha. N'ikpeazụ, enwere ike iji HPMC dị ka onye na-akwụsịtụ iji meziwanye nkwusioru nke simenti na ngwakọta ngwa agha.

HPMC bụ ihe mgbakwunye dị irè na nke dị iche iche maka ngwa owuwu. Ọ nwere ike imeziwanye ọrụ nke ciment na ngwa agha, belata agụụ mmiri ha, meziwanye nrapado ha na ihe ndị na-emepụta ihe, ma melite nkwụsị mmiri ha. Ọzọkwa, enwere ike iji ya dị ka emulsifier, onye na-emepụta ihe nkiri, colloid nchebe, na onye na-akwụsịtụ. HPMC bụ mgbakwunye akụ na ụba yana nchekwa enwere ike iji kwalite arụmọrụ ciment na ngwakọta ngwa agha.