Methylcellse (mc)
Inzira ya molekile ya methylcellse (MC) ni:
[C6H7O2 (OH) 3-H (Och3) n \] x
Inzira yumusaruro nugukora selile nkurikije urukurikirane rwibisubizo nyuma yipamba ryatunganijwe ifatwa na alkali, na methyl chloride ikoreshwa nkumukozi wabuze. Mubisanzwe, urwego rwo gusimburwa ni 1.6 ~ 2.0, kandi kwikebana nabyo bitandukanye nuburyo butandukanye bwo gusimburwa. Ni iya Not-ionic selile.
Methycellsellse irashonje mumazi akonje, kandi bizagorana gusesa mumazi ashyushye. Igisubizo cyacyo gihamye cyane murwego rwa PH = 3 ~ 12.
Ifite neza hamwe nigitako, Guar gum, nibindi nibindi byinshi. Iyo ubushyuhe bugera ku bushyuhe bwa gelale, pelation ibaho.
Kugumana amazi ya methylcellsellse biterwa namafaranga yiyongera, viscosiya, ubushyari nubucamu.
Mubisanzwe, niba amafaranga yongeyeho ari manini, igorofa ni nto, kandi viscometity nini, igipimo cyo kugumana amazi ni kinini. Muri bo, ingano yo kongenge ifite ingaruka zikomeye ku gipimo cyo kugumana amazi, kandi urwego rwa vicosity ntabwo ruringaniye mu rwego rwo kugabana amazi. Igipimo cyo gusebanya cyane cyane giterwa nurwego rwo guhindura hejuru yubuso bwa selire hamwe nibyiza.
Muri erebire yavuzwe haruguru, Methyl selile na hydroxypropyl methyl Methyl ifite ibiciro byamazi menshi.
Carboxymethylcellsellse (CMC)
Carboxymethyl selile, izwi kandi ku izina rya sodium carboxymethyl selile, CMC, rizwi cyane kuri selile ya selile, kandi kose umunyu wa selile Ibikoresho fatizo.
Irakoreshwa cyane mu nganda zo gufatanya, inganda zibiriza hamwe namazi yo gucukura amavuta, kandi amafaranga akoreshwa muguko kwisiga gusa angana na 1%.
Ihangane na selile ether ikozwe muri fibre karemano (ipamba, nibindi) nyuma yo kuvura alkali, ukoresheje sodium monochlorotate nkabakozi bahorerana, kandi burimo kuvura reaction.
Urwego rwo gusimbuza ni 0.4 ~ 1.4, kandi imikorere yacyo igira ingaruka kurwego rwo gusimburwa.
CMC ifite ubushobozi buhebuje bwo guhuza, kandi igisubizo cyacyo gifite ubushobozi bwiza bwo guhagarika, ariko nta gaciro nyabyo bya plastiki.
Iyo CMC ishonga, depolymerization mubyukuri ibaho. Ibyatsi bitangira kuzamuka mugihe cyo gusesa, kunyura hejuru, hanyuma bigabanuka mu kibaya. Vistoire yavuyemo ifitanye isano na depolymerisation.
Urwego rwa depolymerisation rufitanye isano rya bugufi nubunini bwamadorari mabi (amazi) muri formulate. Muri sisitemu mbi ya sisitemu yo guhitamo, nko gusa amenyo irimo glycerin namazi, CMC ntabwo izagera kuri depolymerize kandi izagera kuri equilibrium.
Kubijyanye n'amazi yatanzwe, hasigaye hydrophilic yasimbuwe cyane na CMC yoroshye depolymerize kuruta CMC yo hasi.
Hydroxyyerlcellylcellse (Hec)
HEC ikorwa no kuvura ipamba yatunganijwe hamwe na Alkali, hanyuma ikareba hamwe na Ethylene okiside ya Ethyne nkumukozi wa hantu habaho imbere ya Acetone. Urwego rwo gusimbuza ni 1.5 ~ 2.0. Ifite hydrofilire ikomeye kandi biroroshye gukuramo ubushuhe.
Hydroxyyeryl selile irashonje mumazi akonje, ariko biragoye gusesa mumazi ashyushye. Igisubizo cyacyo kirahamye ku bushyuhe burebure nta na umwelle.
Birahamye acide rusange. Alkalis irashobora kwihutisha iseswa ryayo kandi ryongerera ubuyobe. Gutagira nabi mumazi birababaje gato kurenza ibya Methyl Celllease na HydroxyPropyl Methyl Cellulose.
HydroxyPropyl Methyl Cellulose (HPMC)
Formula ya molecle ya HPMC ni:
\ [C6H7O2 (OH) 3-MN (Och3) M, Och2ch (OH) ch3 \] n \] x
HydroxyPropyl Methylcellse nubu bwoko bwa selile birasohoka no kurya biriyongera vuba.
Nibintu bitari uonic bivanze ether bikozwe mu ipamba inoze nyuma ya alkaliation, ukoresheje ibyatsi bya proplene na methyl chloride nkabakozi bashya, binyuze mu ruhererekane. Urwego rwo gusimbuza ni 1.2 ~ 2.0.
Imitungo yayo iratandukanye kubipimo bitandukanye bya uburyo na hydroxyproppopyl.
HydroxyPropyl methylcellse irashonga byoroshye mumazi akonje, ariko bizahura nikibazo cyo gushonga mumazi ashyushye. Ariko ubushyuhe bwa pelale mumazi ashyushye burenze ivya methyl selile. Kudakemura mumazi akonje nabyo birateye imbere cyane ugereranije na methyl selile.
Uruzinduko rwa hydroxyPropyl methylcellse ifitanye isano n'uburemere bwayo, n'uburemere bunini bwa molekile, hejuru ya vino. Ubushyuhe bugira ingaruka kandi ku rubyiruko, uko ubushyuhe bwiyongera, vicosity igabanuka. Ariko, viscosity yayo yo hejuru ifite ingaruka zo hepfo kurenza methyl selile. Igisubizo cyacyo kirahagaze mugihe kibitswe mubushyuhe bwicyumba.
Kugumana amazi ya hydroxyPropyl methylcellsellus biterwa namafaranga yiyongera, victhity, nibindi, hamwe nigipimo cyo kugumana amazi kumafaranga yinyongera ari hejuru ya methyl selile.
HydroxyPropyl Methylcellllse irahamye aside na alkali, hamwe nigisubizo cyacyo gihamye cyane murwego rwa PH = 2 ~ 12. Amazi ya Caustic Soda namazi ntabwo afite ingaruka nke kubikorwa byayo, ariko alkali irashobora kwihutisha iseswa ryayo kandi ryongerera ubuyobe.
HydroxyPropyl Methylcellse irahamye muminyuhuri isanzwe, ariko iyo kwibanda ku gisubizo cyumunyu hejuru, viscogity ya hydroxyPropyl methylcellse igisubizo gikunda kwiyongera.
HydroxyPropyl Methylcellllse irashobora kuvangwa n'amasoko yo gukosora amazi kugirango akore igisubizo kimwe kandi cyo hejuru. Nka Polyvinyl Inzoga, ibikatsi bya Ether, gum yimboga, nibindi
HydroxyPropyl methylcellse ifite enzyme nziza kuruta methylcelllllliulose, kandi igisubizo cyacyo ntigishobora kuba cyiza kuruta methylcellse
Igihe cya nyuma: Feb-14-2023