Methylcellose (mc)
Molecular nke methylcellose (mc) bụ:
[C6h7o2 (oh) 3-h (och3) n \] x
Usoro mmepụta bụ ime ka mkpụrụ obi na-aga site na usoro mmeghachi omume mgbe a na-emeso Alkali, na methych chloride dị ka onye ọrụ Ithery. N'ozuzu, ogo nke nnọchi bụ 1.6 ~ 2.0, na solubity dịkwa iche na ogo dị iche iche nke dochie. Ọ bụ nke na-abụghị ionic ether.
Methylcellose na-soluble na mmiri oyi, ọ ga-esikwa ike ịgbari na mmiri ọkụ. Ngwọta ya dị oke mma na mpaghara PH = 3 ~ 12.
Ọ nwere ezigbo ndakọrịta na stachi, Guar chịm, wdg na ọtụtụ fromsactants. Mgbe ọnọdụ okpomọkụ na-erute okpomọkụ ahụ, gelation emee.
Ndozi mmiri nke methylcellose na-adabere na mgbakwunye ya, viscosity, nsị na ọnụego ya.
N'ozuzu, ọ bụrụ na mgbakwunye ego buru ibu, ọ dị obere, na viscosis buru ibu, ọnụ ọgụgụ njigide mmiri dị elu. N'etiti ha, ego nke mgbakwunye nwere mmetụta kachasị ukwuu na ụzọ mbelata mmiri, yana ọkwa viscosity abụghị nke dabara na ọkwa nke mmiri iji. Ọnụego mgbasa efe si na-adabere na ogo mgbanwe nke mkpụrụ osisi cellulose na urughuru.
N'etiti ndị dị n'elu Cellers dị n'elu, methyl cellulose na hydroxyl methyl methyl cellulose nwere ọnụego mmiri dị elu.
Carboxymethylclose (cmc)
A na-akpọ poloxylyMylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylyyl, a na-akpọkarị polymer celyylate, bụ nnu nnu nke cellowkwù, ma na-emegharị ya na enweghị ngwụcha. Kemịkalụ akụrụngwa.
A na-ejikarị ya na ụlọ ọrụ na-egbochi ihe, ụlọ ọrụ nri na mmiri ubi mpaghara, na ego ole ejikwa ihe ịchọ mma ihe dị ka 1%.
A na-eme enic sel sel na eriri anụ (owu, wdg) mgbe Alkali ọgwụgwọ, na-eji sodium modochlorotetetate dị ka onye ọrụ Ither, ma nwee usoro mmeghachi omume.
Ogo nke dochie anya ya bụ 0.4 ~ 1.4, na arụmọrụ ya emetụtala oke.
CMC nwere ikike dị mma, na ngwọta ya nwere ezigbo ịgbachitere ike, mana enweghị ezigbo nrụrụ nrụrụ bara ụba.
Mgbe CMC scrosives, depolilization n'ezie na-eme. Viccssity na-amalite ibili n'oge mgbasa, gafere karịa, wee daa ruo ala. Ihe na-esite na viscosity metụtara depolization.
Ogo nke Depolymerization nwere njikọ chiri anya na ego nke adịghị mma (mmiri) na usoro. Na sistemu na-adịghị mma, dị ka nhicha nhicha nwere glycerin na mmiri, cmc agaghị ebido kpamkpam ma ga-erutụ ihe ọ bụla.
N'ihe banyere ịta mmiri na-adọrọ adọrọ, a na-eji hydrophilic nke ukwuu cmc dị mfe ịdọrọ karịa cmc.
Hydroxyethylcellose (HEC)
A na-eme hec site na ọgwụgwọ anụ ahụ nke nwere alkali na-ajụrụ anụ ahụ, wee rewere oxide oxide dị ka onye na-ahụ maka acetone. Ogo nke dochie anya ya bụ 1.5 ~ 2.0. O nwere hydrophilicy siri ike ma dịkwa mfe ịnabata mmiri.
Hydroxyethyth Cellulose na-soluble na mmiri oyi, mana o siri ike igbari na mmiri ọkụ. Ngwọta ya kwụsiri ike na oke okpomọkụ na-enweghị gellling.
Ọ ga-akwụsi ike na acid na ntọala. Alkalis nwere ike mee ngwa ngwa mgbasa ma na-abawanye viscosity. Mgbasa ya na mmiri dị oke njọ karịa nke methy cellulose na hydroxypyl methyl cellulose.
Hydroxypylthylthth cellulose (hpmc)
Usoro molecular nke HPMC bu:
\ [C6h7o2 (oh) 3-mn (och3) m, och2ch (oh) Ch3 \] n \] x
Hydroxypylthylthylcelllose bụ ụdị mkpụrụ osisi cellulose nke mmepụta ya na oriri na-abawanye ngwa ngwa.
Ọ bụ nke na-abụghị nke ionic cellulose mere site na owu nụchara anụcha, na-eji propylene oxide na methyl chloride dị ka onye na-eme ihe nkiri, site na usoro mmeghachi omume. Ogo nke dochie anya ya bụ 1.2 ~ 2.0.
Njirimara ya dị iche n'ihi ogo dị iche iche nke methoxy na ọdịnaya mmiri hydroxypypyl.
Hydroxypylththththyththyth methylcellose na-agbanye na mmiri oyi, mana ọ ga-ezute ike na mmiri ọkụ. Ma ọnọdụ okpomoku ya na mmiri ọkụ dị elu karịa nke methy cellulose. A na-akwalitekwa ngụgụ na mmiri oyi na-akwalite ya na methy cellulose.
Ọrịa vidlexypyl Methylcelllose metụtara ịdị arọ ya, na ibu oke molecular, onye dị elu na viscosity. Ọnọdụ okpomọkụ na-emetụtakwa viscosity ya, dị ka ọnọdụ okpomọkụ na-abawanye, viscese belata. Agbanyeghị, viscosity ya dị elu nwere obere okpomọkụ karịa methy cellulose. Ngwọta ya kwụsiri ike mgbe echekwara na ụlọ okpomọkụ.
Njikọ mmiri nke hydropyythylthyth na-adabere na mgbakwunye ya, viscosity, na njide ya na mgbakwunye na nha nke methy cellulose.
Hydroxypyl Methylcellose bụ ọkaibe na alkali, na ihe o mere nke ọma kwụsiri ike na nso nke ph = 2 ~ 12. Saustic Sọsda na Wayo Waime enweghị obere mmetụta na arụmọrụ ya, mana alkali nwere ike ime ka ọpụpụ ya ma mee ka ọ dịkwuo ọhụrụ.
Hydroxypyl Methylcellose bụ nkwụsi ike na nnu, ma mgbe ịta nke nnu dị elu, viscosity hydroxypyl methylcellopy na-abawanye.
Enwere ike ịgwakọta ya na mmiri polymer na-agbanye mmiri iji mepụta ụdị viscrty na-eto eto. Dị ka mmanya polyvinyl, stachi ether, ihe oriri na akwukwo nri, wdg.
Hydroxypylthylthylthylcelllose nwere ike iguzogide elu karịa methylcellose, na ihe ngwọta ya agaghị enwe ike ịbụ ihe na-emebi emebi karịa methylcellose
Oge post: Feb-14-2023