Hydroxypropyl Methylcellulose (HPMC)bụ ihe polymer soluble mmiri nke a na-ejikarị arụ ọrụ, ọgwụ, nri na ihe ịchọ mma. Na ebe iru mmiri, arụ ọrụ nke HPMC na-emetụta ọtụtụ ihe, na njirimara ya na-ekpebi ngbanwe ya na nkwụsi ike na ngwa dị iche iche.
1. Hygroscopicity
HPMC bụ ihe hydrophilic nwere hygroscopicity siri ike. Na gburugburu iru mmiri, HPMC nwere ike ịmịkọrọ mmiri sitere na ikuku, bụ nke a na-ekwu na ọ bụ nnukwu hydroxyl na methoxy dị n'ụdị ya. Nke a hygroscopicity na-eme ka oyi akwa nke ihe nkiri mmiri na-etolite n'elu HPMC, na-eme ka ọ na-egosi mmanu mmanu na adhesion. Ihe onwunwe a dị mkpa karịsịa n'ihe eji arụ ụlọ. Dịka ọmụmaatụ, na nrapado tile na putty powder, HPMC nwere ike imeziwanye arụmọrụ ihe owuwu na njigide mmiri nke ngwaahịa ahụ.
Agbanyeghị, oke hygroscopicity nwere ike ibute nsogbu na ngwa ụfọdụ. Dịka ọmụmaatụ, mgbe a na-eji HPMC mee ihe dị ka matriks ntọhapụ a na-achịkwa na mbadamba ọgwụ, ịṅụbiga mmiri ókè nwere ike gbanwee ọnụego ntọhapụ ọgwụ ma na-emetụta nkwụsi ike nke ịdị irè ọgwụ. Ya mere, na iru mmiri na gburugburu ebe obibi, usoro nhazi nke HPMC kwesịrị ịṅa ntị pụrụ iche na omume hygroscopic ya.
2. Nkwụsi ike
HPMC n'ozuzu na-egosipụta ezigbo nkwụsi ike kemịkalụ na gburugburu iru mmiri. N'ihi mgbanwe pụrụ iche nke yinye molekụla ya, HPMC kwụsiri ike na gburugburu acid na alkaline yana ọ naghị enweta mmebi dị ukwuu ma ọ bụ mmeghachi omume kemịkalụ n'okpuru oke iru mmiri. Agbanyeghị, oke iru mmiri nwere ike inwe mmetụta ụfọdụ na akụrụngwa anụ ahụ ya. Dịka ọmụmaatụ, enwere ike ịbawanye ọnụego mgbasa nke HPMC, yana njirimara viscosity ya nwere ike gbanwee n'ihi mmịnye mmiri.
Maka ngwa ihe owuwu, gburugburu iru mmiri dị elu nwere ike ime ka ọnụọgụ mmiri na-agbanwe na ngwa ngwa ma ọ bụ mkpuchi HPMC gbanwere, si otú a na-agbatị oge ihicha ihe ahụ. N'ọnọdụ ụfọdụ, nke a nwere ike ịba uru n'ihi na ọ na-enye ogologo oge ọrụ. Otú ọ dị, oke iru mmiri nwere ike ime ka ike belata mgbe akpọnwụchara ma ọ bụ mgbawa n'elu.
3. Njide mmiri
HPMC nwere ezigbo njide mmiri na gburugburu iru mmiri. Ihe onwunwe a na-eme ka ọ bụrụ ihe mgbakwunye dị mkpa na ụlọ ọrụ ihe owuwu. Dịka ọmụmaatụ, n'oge usoro plasta mgbidi, HPMC nwere ike igbochi ngwa ngwa nke mmiri, si otú ahụ hụ na ngwa agha ahụ nwere oge zuru ezu iji mezue mmeghachi omume hydration ma melite ogo ụlọ. N'ebe dị mmiri mmiri, enwere ike ịkwalite ikike njide mmiri a n'ihi na iru mmiri dị na gburugburu ebe obibi na-enyekwu mmiri mmiri maka ihe.
4. Ikike imepụta ihe nkiri
Ikike imepụta ihe nkiri nke HPMC pụtara ìhè karịsịa na gburugburu iru mmiri. Mgbe ihe ngwọta HPMC na-ekpuchi ikuku na oke iru mmiri, ọnụ ọgụgụ mmiri na-ekpo ọkụ na-ebelata, na-akwalite nhazi nhazi nke ihe nkiri ahụ. Ihe nkiri a nwere mgbanwe dị mma na nkwụsị nkwụsị, ma nwee ike inye ezigbo nkwụsị mgbape na ihe mgbochi mmiri maka mkpuchi ụlọ. N'ebe nri na ọgwụ, a pụkwara iji ihe nkiri HPMC mee ihe maka mkpuchi na ichekwa ihe ndị nwere mmetụta dị nro site na mmetụta nke gburugburu iru mmiri.
5. njikarịcha njikarịcha na ngwa
Iji bulie arụmọrụ HPMC na gburugburu iru mmiri, anabatala ụzọ mgbanwe dị iche iche na mpaghara ngwa dị iche iche. Dịka ọmụmaatụ, site n'ịgbanwe ogo nke nnọchi nke HPMC, enwere ike ịgbanwe àgwà hygroscopicity ya na viscosity; N'ime ihe owuwu ụlọ, enwere ike imeziwanye nkwụsi ike ya na gburugburu iru mmiri site na iji mgbakwunye ndị ọzọ (dị ka ntụ ntụ latex ma ọ bụ thickener).
Arụmọrụ nkeHPMCna gburugburu iru mmiri na-emetụta ọtụtụ ihe. Hygroscopicity ya, njigide mmiri na ike imepụta ihe nkiri na-eme ka ọ gosipụta uru ngwa dị mma n'ọhịa nke ihe owuwu, ọgwụ na nri. Agbanyeghị, oke iru mmiri nwere ike iweta ụfọdụ ihe ịma aka, bụ nke a ga-emerịrị site na nhazi usoro sayensị na usoro mgbanwe. Site miri emi na-amụ omume nke HPMC na a iru mmiri gburugburu ebe obibi, àgwà ya nwere ike mma agbalịsi ike izute mkpa nke dị iche iche ubi.
Oge nzipu: Dec-24-2024