Mkpụrụ osisi nke polmer mmiri na-eme nke ọma na-enwetara site na ebe a na-agbanwe kemịkal. A na-eji mkpụrụ ndụ cellulose (Mc), hydroxyethyl methyl methy, nri, ọgwụ, ihe ịchọ mma na ubi ndị ọzọ. Isi ihe dị ka Troner gụnyere akụrụngwa anụ ahụ na kemịkal nke mmekọrịta dị n'etiti usoro molecular.
1
A na-egosipụta Ewer sel dị iche iche site na iwebata ihe dị iche iche (dịka Methyl, ethyl, hydroxyl, wdg) na selulose selulose. Usoro a na-ejigide usoro nke cellulose ma gbanwee mgbanwe ya na omume idozi ya. Mmeghe nke ndị eji emebe ihe na-eme ka eyers Cellulose nwere ezigbo solubality na mmiri ma nwee ike ịmalite usoro collodal na ngwọta, nke dị mkpa maka arụmọrụ ya.
2. Omume molecular na ngwọta
Mmetụta nke cellulose eather na mmiri na-esite na ntọala netwọkụ dị elu nke usoro nyocha ya na-arụpụta na ngwọta. Usoro a kapịrị ọnụ gụnyere:
2.1 Ọzịza na ịgbatị nke eriri molec
Mgbe other celluved na mmiri, a ga-azarịrị eriri macromolialar ya ga-aza n'ihi hydration. Akwa awara awara awara awara awara awara awara awara awara awara aboụ ma na-amụbakwa viscosity nke ihe ngwọta nke ihe ngwọta. Nke a na-agbatị na ọzịza na-adabere n'ụdị na ogo nke nbanye nke ihe eji eme ya, yana ọnọdụ okpomọkụ na uru ọnọdụ nke ihe ngwọta.
2.2 Intermololular Hydrogen Hydrogen na Mmekọ Hydrophobic
Akwa ethilu ether molet nwere ọnụ ọgụgụ dị ukwuu nke otu hydroxy na otu ndị ọzọ na-eme ihe na-eme siri ike na ụmụ irighiri mmiri site na ijikọ hydrogen. Ke adianade, ndi ji hydrophose na-enwekarị otu hydrophobicity, na otu Hydrophobic a nwere ike ịpụta nchịkọta hydrophobic na mmiri, si otú ahụ mee ka viocositio nke ngwọta ya. Mmetụta jikọtara ọnụ nke hydrogen na mmekọrịta hydrophobic na-enye ohere nke cellulose a na-eme ka ọ dị elu iji mepụta steeti dị elu.
2.3 Interbonment na Crosslinking n'etiti agwọ
Mkpụrụ ndụ eather ga-etolite anụ ahụ na ngwọta ahụ n'ihi ọgba aghara ọkụ na ndị agha a na-emegharị ya, ndị a na-arụkọ ọrụ na-abawanye viscosity nke ihe ngwọta. Ke adianade do, na elu akwara, cellulose ether nwere ike ibupụta ihe yiri nke ahụ, nke na-akwalite viscosity nke ihe ngwọta.
3. Ime usoro dị iche iche na ngwa
Ihe eji eme ihe
N'ime ụlọ ihe eji eme ihe, a na-ejikarị ndị na-eme ihe ubi akpọrọ ihe dị ka ndị na-eme agha na codiings. Ha nwere ike ịbawanye arụmọrụ owu na ngwa agha nke ngwa agha, si otú a na-eme ka ọdịmma nke iwu rụọ na ogo nke ụlọ. Mmetụta ndị dị omimi na athers na ngwa ndị a bụ tumadi site na guzobere ngwọta viscositions, na-abawanye adhesion na akụrụngwa nke ihe.
Ihe oriri 3.2
N'ime ụlọ ọrụ nri, eyers celluse dịka hydropyylthylthylthylthylthylthyl na hydroxyethyl cellulose (hEC) dị ka ndị dị omimi, na-ekwu okwu na emops. Ihe ngwọta dị elu ha na-etolite na nri nwere ike ime ka uto na ederede nri, mgbe ọ na-eme ka usoro a gbasasịrị na nri iji gbochie esemokwu na ọdịda.
3.3 Ọgwụ na Ihe ịchọ mma
N'ime ubi ọgwụ na ịchọ mma, a na-eji usoro ndị na - eme ihe dị ka ndị na - eme ihe dị ka gelling maka nkwadebe ọgwụ dị ka gels na ude. Usoro ya na-emekarị na-adabere na omume ya na mmiri na usoro netwọ dị elu na-etolite, na-enye viscosity na nkwụsi ike nke ngwaahịa a chọrọ.
4. Mmetụta nke ihe ndị metụtara gburugburu ebe obibi
Ihe dị iche iche nke cellulose nke gburugburu ebe obibi na-emetụta oke gburugburu ebe obibi, gụnyere okpomọkụ, uru okpomọkụ na ike Ionic ike nke ihe ngwọta. Ihe ndị a nwere ike ịgbanwe akara ọzịza na mmekọrịta nke mkpụrụ osisi cellulose eth, si otú ahụ na-emetụta viscosity nke ihe ngwọta. Dịka ọmụmaatụ, okpomọkụ dị elu na-ebelata viscosity nke sel nke sel nke ọma, ebe mgbanwe na uru phy nwere ike ịgbanwe ọnọdụ ionization nwere ike ịgbanwe ọnọdụ nke molielar ígwè, si otú ahụ na-emetụta viscosity.
Ngwa ngwa nke cellulose e lere anya dị ka nke na-agbaze bụ n'ihi ihe owuwu ya pụrụ iche na ihe owuwu netwọdi dị elu na-etolite na mmiri. Site na nghọta ya na ngwa ndị dị na ngwa dị iche iche, ọrụ ya na mpaghara ọrụ dị iche iche nwere ike kachasị mma. N'ọdịnihu, ọmụmụ ihe dị omimi banyere mmekọrịta dị na Cellulose Other na arụmọrụ, a na-atụ anya na ngwaahịa ndị dị mma ga-ewelite mkpa nke mpaghara dị iche iche.
Oge post: Feb-17-2025