Nyocha nke ihe kpatara mmetụta nke ụzọ dị iche iche nke mgbakwunye hydroxyethyl cellulose na sistemụ agba latex

Usoro ime ka ọkpụrụkpụ nkehydroxyethyl cellulosebụ ime ka viscosity dịkwuo elu site na ịmepụta njikọ hydrogen dị n'etiti molekul na intramolecular, yana mmiri na njikọta nke yinye nke yinye nke molekul. Ya mere, enwere ike kewaa ụzọ hydroxyethyl cellulose n'ime akụkụ abụọ: otu bụ ọrụ nke njikọ hydrogen dị n'etiti molekul na intramolecular. Isi yinye hydrophobic na-ejikọta ya na molekul mmiri gbara ya gburugburu site na njikọ hydrogen, nke na-eme ka mmiri nke polymer n'onwe ya dịkwuo mma. Olu nke ihe ndị ahụ na-ebelata oghere maka mmegharị efu nke ihe ndị ahụ, si otú a na-eme ka viscosity nke sistemụ dịkwuo elu; nke abụọ, site na njikọta na njikọta nke agbụ molekul, agbụ cellulose dị na nhazi netwọk atọ dị n'ime sistemụ ahụ dum, si otú a na-eme ka viscosity dịkwuo mma.

Ka anyị leba anya n'otú cellulose si arụ ọrụ na nkwụsi ike nchekwa nke sistemụ ahụ: nke mbụ, ọrụ nke njikọ hydrogen na-egbochi mmiri efu, na-arụ ọrụ na idobe mmiri, ma na-enye aka igbochi nkewa mmiri; nke abụọ, mmekọrịta nke agbụ cellulose Njikọta azụ na-emepụta netwọk njikọ ma ọ bụ mpaghara dị iche n'etiti agba, ihe na-ejupụta na ihe na-eme ka e nwee mmiri, nke na-egbochi ịda.

Ọ bụ njikọta nke ụzọ abụọ a dị n'elu nke na-eme ka o kwe omumehydroxyethyl celluloseiji nwee ezigbo ikike imeziwanye nchekwa. N'imepụta agba latex, HEC agbakwunyere n'oge ịkụ na ịgbasa na-abawanye ka ike mpụga na-abawanye, gradient shear speed na-abawanye, a na-ahazi molekul n'usoro n'akụkụ ntụziaka mmiri, a na-ebibikwa sistemụ lap winding n'etiti agbụ molekul, nke dị mfe ịmịkọrọ ibe ha, viscosity sistemụ ahụ na-ebelata. Ebe ọ bụ na sistemụ ahụ nwere ọtụtụ ihe ndị ọzọ (pigments, fillers, emulsions), nhazi a n'usoro enweghị ike iweghachi ọnọdụ njikọ na njikọta nke njikọ na-ejikọta ọnụ ọbụlagodi ma ọ bụrụ na etinye ya ogologo oge mgbe agbachara agba ahụ. N'okwu a, HEC na-adabere naanị na njikọ hydrogen. Mmetụta nke njigide mmiri na ọkpụrụkpụ na-ebelata arụmọrụ nke ịdị arọ nkeHEC, na ntinye aka nke ọnọdụ mgbasa a na nkwụsi ike nchekwa nke sistemụ ahụ na-ebelatakwa dịka o kwesịrị. Agbanyeghị, a gbasasịrị HEC ahụ n'otu aka ahụ na sistemụ ahụ na obere ọsọ mkpali n'oge mbelata, nhazi netwọk nke njikọ HEC nke e guzobere emeghị ka ọ ghara imebi. N'ihi ya, ọ na-egosi arụmọrụ dị elu na nkwụsi ike nchekwa. N'ụzọ doro anya, ihe omume nke ụzọ abụọ ahụ na-eme n'otu oge bụ ebumnuche nke ime ka cellulose sie ike nke ọma ma hụ na nchekwa kwụsiri ike. N'ikwu ya n'ụzọ ọzọ, ọnọdụ cellulose gbazere agbaze na nke gbasaara na mmiri ga-emetụta mmetụta ya na ntinye aka ya na nkwụsi ike nchekwa.