Ebee ka hydroxypropyl methylcellulose si abịa?

Hydroxypropyl methylcellulose (HPMC) bụ polymer sịntetik nke sitere na cellulose, nke bụ polymer organic na-emekarị nke na-etolite mgbidi cell nke osisi. A na-eme HPMC site n'ịgbanwe cellulose nke ọma site na usoro a na-akpọ etherification.

Na etherification, a na-emeso cellulose na ngwakọta nke propylene oxide na methyl chloride n'okpuru ọnọdụ a na-achịkwa iji mepụta hydroxypropyl cellulose (HPC). A na-emeziwanye HPC site n'ịgwọ ya na methanol na hydrochloric acid iji mepụta HPMC.

Ngwaahịa HPMC na-esi na ya pụta bụ mmiri na-edozi mmiri, polymer na-abụghị ionic nke nwere ọtụtụ ihe bara uru, dị ka njide mmiri dị elu, ike ịmepụta ihe nkiri dị mma, na ihe ndị dị mma na-eme ka ọ dịkwuo mma. Ngwongwo ndị a na-eme HPMC ka ọ bụrụ mgbakwunye bara uru n'ọtụtụ ngwa dị iche iche, dị ka ihe owuwu ụlọ, ọgwụ na ngwaahịa nri.

Ọ bụ ezie na HPMC sitere na cellulose, ọ bụ polymer synthetic nke a na-emepụta site na usoro kemịkal dị mgbagwoju anya.