The ndim usoro nkehydroxyethyl cellulosebụ ime ka viscosity dịkwuo elu site na nguzobe nke njikọ intermolecular na intramolecular hydrogen, yana hydration na njikọ nke agbụ molecular. Ya mere, a pụrụ ikewa usoro ịgbatị hydroxyethyl cellulose ụzọ abụọ: otu bụ ọrụ nke njikọ intermolecular na intramolecular hydrogen. Igwe mmiri hydrophobic na-ejikọta ya na ụmụ irighiri mmiri gbara ya gburugburu site na njikọ hydrogen, nke na-eme ka mmiri dị na polymer n'onwe ya dịkwuo mma. Olu nke ihe ndị ahụ na-ebelata ohere maka mmegharị n'efu nke ihe ndị ahụ, si otú a na-amụba viscosity nke usoro ahụ; nke abuo, site na nchikota na nchikota nke agbụ molecular, agbụ cellulose dị na nhazi netwọk nke akụkụ atọ na usoro dum, si otú a na-eme ka viscosity dịkwuo mma.
Ka anyị leba anya n'otú cellulose si arụ ọrụ na nkwụsi ike nke usoro ahụ: nke mbụ, ọrụ nke njikọ hydrogen na-egbochi mmiri nke mmiri n'efu, na-ekere òkè na njide mmiri, ma na-enye aka igbochi nkewa mmiri; nke abụọ, mmekọrịta nke cellulose chains The n'apata entanglement na-etolite a cross-njikọ netwọk ma ọ bụ dị iche iche ebe n'etiti pigments, fillers na emulsion ahụ, nke na-egbochi edozi.
Ọ bụ nchikota nke abụọ ụdịdị omume nke na-enyere akahydroxyethyl celluloseinwe ezigbo ikike iji melite nkwụsi ike nchekwa. Na mmepụta nke agba latex, HEC agbakwunyere n'oge a na-eti ma na-agbasasị na-abawanye site na mmụba nke ike dị n'èzí, ụda ike na-agba ọsọ na-abawanye, a na-ahazi ụmụ irighiri ihe n'usoro dị n'usoro n'usoro nke na-asọba, na usoro ntụgharị ụkwụ n'etiti eriri molecular na-ebibi, nke dị mfe ijikọta ibe ha, viscosity usoro na-ebelata. Ebe ọ bụ na usoro ahụ nwere nnukwu ihe ndị ọzọ (pigments, fillers, emulsions), nhazi a n'usoro enweghị ike iweghachi ọnọdụ njikọ nke njikọ njikọ na nchikota ọbụna ma ọ bụrụ na etinye ya ogologo oge mgbe agbachara agba. N'okwu a, HEC na-adabere naanị na njikọ hydrogen. Mmetụta nke mmiri na-ejigide na ndim na-ebelata mmepụta nke ọmaHEC, na ntinye nke steeti mgbasa ozi a na nkwụsi ike nchekwa nke usoro ahụ na-ebelatakwa ya. Otú ọ dị, a gbasasịrị HEC gbasasịa n'otu n'otu na usoro ahụ na ọsọ ọsọ na-akpali akpali n'oge nkwụsịtụ, na usoro netwọk nke e guzobere site na njikọ njikọ nke eriri HEC adịghị emebi emebi. N'ihi ya, na-egosi elu ndim arụmọrụ na nchekwa kwụsie ike. N'ụzọ doro anya, omume n'otu oge nke ụzọ abụọ a na-agbakọ ọnụ bụ ntọala nke ịgbatị cellulose nke ọma na ịhụ nkwụsi ike nke nchekwa. N'ikwu ya n'ụzọ ọzọ, ọnọdụ cellulose gbazere na gbasasịa n'ime mmiri ga-emetụta mmetụta ya siri ike na ntinye aka na nkwụsi ike nchekwa.
Oge nzipu: Eprel-25-2024