Otu esi eme ka njigide mmiri nke hydroxypropyl methylcellulose dịkwuo mma

Hydroxypropyl methylcellulose bụ ihe mgbakwunye a na-ejikarị na ngwa ngwa ntụ ntụ. Cellulose ether na-arụ ọrụ dị mkpa na ntụ ntụ ntụ. Mgbe ether cellulose dị na ngwa agha gbazere, ọrụ dị n'elu na-eme ka a hụ na ihe ciment bụ ihe a na-ekesa usoro nke ọma, na cellulose ether, dị ka colloid na-echebe, "na-ekekọta" ihe ndị siri ike ma na-emepụta ihe nkiri na-egbuke egbuke na mpụta ya. elu, na-eme ka ngwa ngwa usoro kwụsie ike ma na-eme ka eruba nke ngwa agha n'oge agwakọta usoro Njirimara na ire ụtọ nke ewu.

Hydroxypropyl methylcellulose HPMC nwere ezigbo njide mmiri, nke nwere ike igbochi mmiri dị na ngwa ngwa mmiri ka ọ ghara ịpụ n'oge akaghi aka ma ọ bụ na-etinye ya na oyi akwa isi, na-ahụ na ciment na-ejupụta mmiri zuru oke, si otú ahụ na-emesị hụ na ihe eji arụ ọrụ nke ngwa agha ahụ, bụ nke bara uru karịsịa. ka mkpa n'ígwé Mortar na absorbent isi ma ọ bụ ngwa agha etinyere n'okpuru elu okpomọkụ na akọrọ ọnọdụ. Mmetụta njide mmiri nke hydroxypropyl methylcellulose ether nwere ike ịgbanwe usoro ihe owuwu omenala ma melite ọganihu ihe owuwu ahụ. Dịka ọmụmaatụ, enwere ike ịrụ ọrụ plasta na ihe ndị na-eme ka mmiri na-amịpụta mmiri n'ebughị ụzọ wepụta ya.

The viscosity, onunu ogwu, ambient okpomọkụ na molekụla Ọdịdị nke hydroxypropyl methylcellulose HPMC nwere nnukwu mmetụta na ya mmiri na-arụ ọrụ. N'okpuru otu ọnọdụ ahụ, ka viscosity nke cellulose ether dị ukwuu, ka mma na-ejigide mmiri; dị elu nke usoro onunu ogwu, ka mma na-ejigide mmiri. Ọtụtụ mgbe, obere cellulose ether nwere ike ime ka njigide mmiri nke ngwa agha dịkwuo mma. Mgbe usoro onunu ogwu ruru ụfọdụ Mgbe ogo dị elu, njigide mmiri na-abawanye nwayọọ nwayọọ; mgbe ọnọdụ okpomọkụ na-ebili, njide mmiri nke cellulose ether na-ebelatakarị, ma ụfọdụ cellulose ethers gbanwekwara na-enwekwa njigide mmiri ka mma n'okpuru ọnọdụ okpomọkụ dị elu; cellulose nwere ogo dị ala nke nnọchi Ether na-ejigide mmiri nke ọma.

Otu hydroxyl dị na molecule HPMC na ikuku oxygen na ether bond ga-ejikọta ya na mmiri mmiri ahụ iji mepụta njikọ hydrogen, na-atụgharị mmiri n'efu ka ọ bụrụ mmiri ejiri, si otú ahụ na-arụ ọrụ dị mma na njide mmiri; mmiri ụmụ irighiri mmiri na cellulose The interdiffusion n'etiti ether molekul agbụ na-enyere mmiri molekul ịbanye n'ime ime nke nnukwu agbụ nke cellulose ether na n'okpuru ike njide ike, si otú a na-akpụ mmiri free na mgbagwoju anya mmiri, nke na-eme ka mmiri na-ejigide apịtị; cellulose ether mma na mmiri njigide nke freshly agwakọta The rheological Njirimara, porous netwọk Ọdịdị na osmotic mgbali nke ciment mado ma ọ bụ ihe nkiri-akpụ Njirimara nke cellulose ether egbochi mgbasa nke mmiri. Otú ọ dị, n'ihi nkwụsị mmiri na-adịghị mma nke cellulose ether dị ugbu a, ngwa agha ahụ nwere adịghị mma na-arụkọ ọrụ ọnụ na arụ ọrụ na-adịghị mma na-arụ ọrụ, na ngwa agha na-adịkarị mfe ịgbawa, oghere na ịdaba mgbe e wuchara ya.