Cellulose ethers bụ klas dị mkpa nke ogige polymer nke a na-ejikarị arụ ọrụ, ihe mkpuchi, ọgwụ na mpaghara ndị ọzọ. Ọdịdị kemịkal ya pụrụ iche na akụrụngwa anụ ahụ na-enye ya uru dị ukwuu n'ịkwalite adhesion na imepụta ihe nkiri.
1. Ihe ndị bụ isi nke cellulose ethers
Cellulose ether bụ ụdị polymer soluble mmiri nwetara site na mgbanwe kemịkalụ nke cellulose eke. Nhazi ya bụ agbụ macromolecular mejupụtara nkeji β-D-glucose jikọtara ya na njikọ β-1,4-glycosidic. Cellulose ethers nkịtị na-agụnye hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), carboxymethylcellulose (CMC), wdg Cellulose ethers nwere ezigbo ndim, mmiri njide, stabilization, film-akpụ na ndị ọzọ Njirimara, nke na-eme ka ha na-arụ ọrụ dị mkpa na dị iche iche ngwa. .
2. Mechanism iji meziwanye adhesion
Mụbaa mgbakwunye ihu: Cellulose ether nwere ike ịmepụta ngwọta colloidal kwụsiri ike na ngwọta. Enwere ike kesaa ihe ngwọta colloidal a n'otu n'otu n'elu nke mkpụrụ osisi ahụ, jupụta micropores elu, ma melite ntinye ihu. Dịka ọmụmaatụ, ịgbakwụnye HPMC na ihe owuwu ụlọ nwere ike imeziwanye njikọ dị n'etiti ngwa ngwa na ihe ndị dị n'okpuru, na-eme ka ngwa ngwa na-arapara n'ahụ mgbidi ahụ.
Mee ka mmiri dị n'elu ala dị mma: Cellulose ether nwere hydrophilicity dị mma ma nwee ike melite mmetụta wetting nke ngwọta n'elu mkpụrụ osisi, si otú ahụ na-eme ka adhesion dịkwuo elu. Wettability bụ otu n'ime isi ihe na-emetụta adhesion. Site na imeziwanye wettability, cellulose ethers nwere ike ịkwalite ihe mkpuchi ahụ ka ọ dịkwuo mma ma kpuchie elu ala.
Meziwanye ihe ntinye igwe: Ihe nkiri a na-emepụta site na cellulose ether n'oge usoro ihicha nwere ụfọdụ mgbanwe na ike, nke na-enye ohere ka cellulose ether mepụta usoro ntinye n'elu nke mkpụrụ iji welie adhesion. Nke a n'ibu interlocking mmetụta dị mkpa karịsịa na mkpuchi na adhesives, nke nwere ike n'ụzọ dị irè melite adhesion Njirimara nke ihe.
3. Mechanism iji meziwanye ihe ndị na-emepụta ihe nkiri
Ngwongwo na-emepụta ihe nkiri mara mma: Cellulose ether nwere ike ịmepụta ihe ngwọta dị elu dị elu mgbe agbazere ya na mmiri, ma nwee ike ịmepụta ihe nkiri na-aga n'ihu mgbe ọ nwụsịrị. Ihe nkiri a nwere ike ịrụ ọrụ dị mma na mgbanwe, nwere ike kpuchie elu nke mkpụrụ ahụ nke ọma ma melite ihe ndị na-emepụta ihe nkiri. Na mkpuchi na mkpuchi ọgwụ, ihe na-emepụta ihe nkiri nke cellulose ethers dị mkpa karịsịa.
Ezigbo njide mmiri: Cellulose ether nwere nnukwu mmiri na-ejide mmiri, nke nwere ike ịnọgide na-enwe mmiri kwesịrị ekwesị n'oge usoro mmepụta ihe nkiri ma gbochie mmebi mmepụta ihe nkiri nke ihicha oke. Njide mmiri na-enyere aka ịmepụta otu akwa na akwa ihe nkiri, na-egbochi mgbawa na ịpụpụ ihe nkiri ahụ. N'ime ngwa agha na-ewu ụlọ na mkpuchi, ihe ndị na-ejide mmiri nke cellulose ethers nwere ike imeziwanye arụmọrụ ihe owuwu nke ihe na njedebe ikpeazụ nke mmepụta ihe nkiri.
Na-achịkwa ọsọ ihicha: Cellulose ether nwere ike imezigharị ikuku mmiri n'oge usoro mmepụta ihe nkiri, na-eme ka usoro mmepụta ihe nkiri na-achịkwa. Site n'ịchịkwa ọsọ ihicha, cellulose ether nwere ike igbochi ịta ahụhụ site na ihicha ngwa ngwa nke oyi akwa ihe nkiri, si otú a na-eme ka mma na nkwụsi ike nke ihe nkiri ahụ dịkwuo mma. N'ime ụlọ ọrụ ọgwụ, a na-ejikarị cellulose ethers eme ihe maka mkpuchi ọgwụ, nke nwere ike ịchịkwa ngwa ngwa ihicha nke oyi akwa mkpuchi ma hụ na ịdị n'otu na iguzosi ike n'ezi ihe nke mkpuchi mkpuchi.
4. Ihe atụ ngwa
Ngwa ngwa ihe owuwu: Ịtinye HPMC na ngwa agha ihe owuwu nwere ike imeziwanye nrapagide na ịrụ ọrụ nke ngwa agha ahụ. Site ya ndim na mmiri-ejigide mmetụta, HPMC mma interface adhesion n'etiti ngwa agha na isi ihe, na mma film-akpụ Njirimara nke ngwa agha, na-eme ka ngwa agha smoother n'oge ewu usoro na ike mgbe film e guzobere.
Agba: Ịgbakwunye cellulose ether na agba nke mmiri nwere ike imeziwanye ọkwa na mmepụta ihe nkiri nke agba, na-eme ka mkpuchi ahụ dị nro ma dị nro. Site na ihe ndị na-emepụta ihe nkiri magburu onwe ya na njide mmiri, cellulose ether na-eme ka mkpuchi ahụ na-emepụta ihe nkiri ihe nkiri dị egwu na nke edobere n'oge usoro ihicha, na-eme ka adhesion na ịdịte aka nke mkpuchi.
Mkpuchi ọgwụ: Na usoro mkpuchi ọgwụ, a na-ejikarị cellulose ethers dị ka HPMC na-emepụta oyi akwa mkpuchi. Ihe dị mma na-emepụta ihe nkiri nke cellulose ether na ikike ịchịkwa ọsọ ihicha nwere ike hụ na ịdị n'otu na iguzosi ike n'ezi ihe nke mkpuchi mkpuchi ma melite nkwụsi ike na ntọhapụ nke ọgwụ ahụ.
Cellulose ether nwere mmetụta dị ukwuu n'ịkwalite adhesion na ihe ndị na-emepụta ihe nkiri site na njupụta ya, na-ejigide mmiri, na imepụta ihe nkiri. Ngwa ya sara mbara na-ewu, mkpuchi, ọgwụ na mpaghara ndị ọzọ n'ụzọ zuru ezu na-egosi ọrụ dị mkpa ya n'ịkwalite adhesion na imepụta ihe nkiri. N'ọdịnihu, na-aga n'ihu na nkwalite nke cellulose ether mmepụta technology na mmepe nke ọhụrụ cellulose ether ngwaahịa, cellulose ether ga-egosi sara mbara ngwa atụmanya na ọtụtụ ubi.
Oge nzipu: Jul-13-2024