Mkpụrụ osisi eather ether bụ klas nke polymers selulose mepụtara. N'ihi mmiri ha dị mma, mgbanwe mgbanwe viscosity na uche dị na ọnọdụ mpụga dị ka ọnọdụ na pịm, a na-eji ha eme ihe n'ọtụtụ ebe, ọgwụ, nri na ihe ịchọ mma. Ọrụ njikwa viscosite nke cellose eather bụ otu n'ime njiri mara nke ngwa ọrụ ya n'ọtụtụ ọrụ ụlọ ọrụ na ngwa kwa ụbọchị.
1. Ọdịdị na nhazi nke Ether's
A na-akwado Ether Ether kwadebere site na sellulose site na mmeghachi omume. Cellulose bụ polymer na-etolite site na monam glucose nke jikọtara ọnụ β-1,4-glycosidic. Usoro nkwadebe nke cellulose eathal na-agụnye na-agụkarị akụkụ nke celdroxyl (dị ka methoxy dị iche iche (dịka methoxy, hydroxyl, wdg).
Dabere na njimara nke ihe na-egbu egbu, nke na-ahụkarị, mc cellulose (mc), hydroxyythyl methyl, wdg. Nọmba na ọnọdụ nke ndị ejikwa ọ bụghị naanị na-emetụta mmiri sossility of erchers, kamakwa metụtara viscosity ha na-eme ka ikike dị iche iche.
2. Usoro viscosition
Usoro virus na-eduzi mmetụta nke mkpụrụ ndụ cellushose na-esite na dissions na mmiri na ụdọ nke ụdọ akwara. Mgbe etisasịwo usoro ndị na-efe efe na mmiri, ndị otu polar na-etolite agbụ mmiri na-eme ka ụmụ irighiri mmiri, na-abawanye esemokwu mmiri, ma si otú a mụbaa viscosise nke ihe ngwọta.
Ma ịdị ukwuu nke viscosis nwere njikọ chiri anya na molecular ụdị, ogo nke dochie anya (DS) na ogo polymerization (dp) nke eyers cellulose. N'ozuzu, ka ibu bulucular ogo nke eyers na ogologo molecular yinye, elu viscosity nke ihe ngwọta. N'otu oge ahụ, ndị kachasị dị iche iche na-emetụta hydrophility nke molecles elosulose, ma si otú ahụ emetụta ike ha na viscosity ha. Iji maa atụ, HPMC nwere ezigbo mmiri gadusition na nkwụsi ike viscosition n'ihi na ya na ndị nethyl na methyl na methyl. CMC, agbanyeghị, nwere viscosity dị elu n'ihi na ọ na-ewebata otu carksyy boxy boxy ebubo, nke nwere ike ime ka ihe ndị mejupụtara mmiri sie ike na mmiri.
3. Mmetụta nke ihe ndị dị na mpụga na viscosity
Vieocs viocosis na-adabere abụghị naanị ihe owuwu nke mpụga, gụnyere okpomọkụ, ntinye uche, wdg.
3.1 okpomọkụ
Ọnọdụ okpomọkụ bụ ihe dị mkpa na-emetụta viscosity nke sel eat. N'ozuzu, viscosity nke cellulose ever ar ga-esi belata okpomọkụ. Nke a bụ n'ihi na ịbawanye ngwa ikpo ọkụ na-eme ka nsogbu dị n'etiti ụmụ irighiri mmiri, ma na-ebute ogo cunling molecular na mmiri ka ịbawanye, belata ngbanwe mmiri, si otú a na-ebelata viscosis mmiri. Agbanyeghị, ụfọdụ ndị otu mkpụrụ ndụ (dị ka HPMC) na-egosipụta njiri mara ọkụ n'ime otu ọnọdụ okpomọkụ, nke ahụ bụ, dị ka ọnọdụ okpomọkụ na-abawanye ma mechaa na-etolite gel.
3.2 Uru
Uru PH nwekwara mmetụta dị ukwuu na viscosity nke cellulose ether. Maka ndị nnọchi anya Cellugul na-eji (dị ka CMC), uru POMC), uru plọ akụ na-emetụta ebubo ọnọdụ nke ndị nnọchianya ahụ, si otú ahụ na-emetụta mmekọrịta n'etiti ụmụ irighiri ihe na viscosis nke ihe ngwọta. At higher pH values, the carboxyl group is more ionized, resulting in stronger electrostatic repulsion, making the molecular chain easier to unfold and increasing viscosity; Ọ bụ ezie na ndị dị ala POM, ndị otu na-ahụkarị ụgbọ ala anaghị adị mfe Ionized, a na-ebelata ihe mkpuchi electrostatic na-ebelata, a na-ebelata akwara.
3.3 iongration
Mmetụta nke ion itinye uche na viscosity nke cellose o doro anya. Ihe ot celler na-eme ka ihe eji eme ihe na-adabere nke oma. Dị ka ion itinye uche na ngwọta na-abawanye, eyszọ ndị dị na mpụga ga-esi ike iwegharị eletrik n'etiti molules evethes, na-eme ka m belata viscosity nke ihe ngwọta. Karịsịa na gburugburu ebe obibi dị elu, viscese nke cmc ga-agbadata nke ukwuu, nke dị ezigbo mkpa maka imewe ngwa.
4. Njikwa viscosity na ngwa ngwa
A na-ejikarị ya n'ọtụtụ ubi n'ihi arụmọrụ ọdịdị viscosity kachasị mma.
Ihe eji eme ihe
Na-ewu ewu, a na-ejikarị HPMC) a na-ejikarị ya akọrọ, ntụ ntụ, taperty, talesive na ngwaahịa ndị ọzọ iji dozie viscosity nke ngwakọta na ihe ndị na-akụ mmiri n'oge owuwu. N'otu oge ahụ, ọ nwekwara ike igbu egbu oge mmiri ahụ, melite njigide mmiri nke ihe, ma si otú ahụ mee ka ike na ịdịgide nke ngwaahịa ikpeazụ.
4.2 coriings na inks
Ethslọ eghe cellugul na-eme dị ka ndị dị egwu ma kwụsie ike na mkpuchi mkpuchi mmiri na inks. Site na idozi viscosity, ha na-ahụ na ọ dị ọkwa na ngwakọta nke mkpuchi n'oge owuwu. Na mgbakwunye, ọ nwekwara ike ịkwalite mgbochi nke mkpuchi nke mkpuchi, belata ịba ụba, ma mee owuwu ọzọ.
4.3 ọgwụ na nri
N'ime ubi ọgwụ na nri, eyers cell (dị ka HPMC, CMC) na-ejikarị dị ka ndị na-eme ihe, ma ọ bụ ndị emulsifiers ma ọ bụ mmesi ike. Dịka ọmụmaatụ, HPMC, dị ka ihe mkpuchi maka mbadamba, nwere ike nweta nsonaazụ ọgwụ maka ọgwụ ike site na ịchịkwa ọnụego mgbasa. Na nri, a na-eji cmc amụba viscosity, melite ụtọ, ma gbasaa ndụ nri.
4.4 Ntinye
Ngwa nke Ethers na ịchọ mma na-eme nke ọma na ngwaahịa dịka emulsions, gels na ihu ihu. Site na idozigharị ihe viscosity, atters cell cell nwere ike inye ngwaahịa ahụ kwesịrị ka mmiri na udidi, ma na-etolite mmiri na-eme ihe nkiri na anụ ahụ iji mụbaa nkasi obi n'oge ojiji.
Mkpụrụ osisi eater ether ether nwere ike ijikwa viocosity nke ngwọta site na nhazi molecular ha pụrụ iche na ịnọgide na gburugburu ebe obibi. Nke a emeela ka ha nwee ngwa ha n'ọtụtụ ebe owuwu, ọgwụ, nri, na ịchọ mma. Na mmepe na-aga n'ihu nke sayensị na teknụzụ, ọrụ nke ndị eyers cellose ga-abawanye na ị ga-enye ihe ngwọta Viscoseụ maka ọtụtụ.
Oge post: Feb-17-2025