Carboxymethyl selulose (CMC) iboneka nyuma ya carboxymethylation ya selile. Igisubizo cyacyo cyamazi gifite imirimo yo kubyimba, gukora firime, guhuza, gufata amazi, kurinda colloid, emulisation no guhagarikwa, kandi ikoreshwa cyane muri peteroli, ibiryo, ubuvuzi, nibindi, inganda zimyenda nimpapuro, nimwe mubyingenzi selile ethers.Selulose isanzwe niyo ikwirakwizwa cyane kandi polysaccharide nyinshi muri kamere, kandi inkomoko yayo irakize cyane. Ubuhanga bwo guhindura imikorere ya selile yibanda cyane cyane kuri etherification na esterification. Carboxymethylation ni ubwoko bwa tekinoroji ya etherification.
imiterere yumubiri
Sodium carboxymethyl selulose (CMC) ni ether ya anionic selulose ether, ifite ifu yera cyangwa yumuhondo nkeya ya fibre fibre cyangwa ifu yera yera, impumuro nziza, uburyohe, ntabwo ari uburozi; byoroshye gushonga mumazi akonje cyangwa mumazi ashyushye, bikora igisubizo runaka cyijimye. Igisubizo kidafite aho kibogamiye cyangwa alkaline nkeya, ntigishobora gushonga muri Ethanol, ether, isopropanol, acetone nindi miti ikomoka ku buhinzi, gushonga muri 60% irimo amazi arimo Ethanol cyangwa acetone. Ni hygroscopique, ihamye kumucyo nubushyuhe, ubukonje bugabanuka hamwe no kwiyongera kwubushyuhe, igisubizo gihamye kuri pH 2-10, pH iri munsi ya 2, hariho imvura igwa, kandi ubukonje bugabanuka mugihe pH irenze 10 Ubushyuhe bwo guhindura ibara ni 227 ℃, ubushyuhe bwa karubone ni 252 and, naho ubushyuhe bwo hejuru bwa 2% yumuti wamazi ni 71mn / n.
imiterere yimiti
Itegurwa ikomoka kuri selile ikomoka kuri carboxymethyl, ivura selile hamwe na hydroxide ya sodium kugirango ikore selile alkali, hanyuma ikore na acide monochloroacetic. Igice cya glucose kigize selile gifite amatsinda 3 ya hydroxyl ashobora gusimburwa, bityo ibicuruzwa bifite impamyabumenyi zitandukanye zo gusimburwa birashobora kuboneka. Ugereranije, mmol 1 ya carboxymethyl yatangijwe kuri 1 g yuburemere bwumye, idashobora gushonga mumazi na acide acide, ariko irashobora kubyimba no gukoreshwa muburyo bwa chromatografiya. Carboxymethyl pKa ni 4 mumazi meza na 3.5 muri 0.5mol / L NaCl. Nibihinduranya acide acide kandi mubisanzwe bikoreshwa mugutandukanya poroteyine zidafite aho zibogamiye kandi shingiro kuri pH> 4. Kurenga 40% byamatsinda ya hydroxyl asimburwa nitsinda rya carboxymethyl, rishobora gushonga mumazi kugirango habeho igisubizo gihamye-cyinshi cya colloidal.
Intego nyamukuru
Carboxymethyl selulose (CMC) ni ifu yera idafite ubumara kandi idafite impumuro nziza kandi ikora neza kandi irashobora gushonga mumazi. Igisubizo cyacyo cyamazi nikidafite aho kibogamiye cyangwa alkaline kibonerana cyamazi ya viscous, gishonga mubindi bikoresho bifata amazi hamwe na resin, kandi ntibishobora gushonga. mumashanyarazi kama nka Ethanol. CMC irashobora gukoreshwa nkibifatika, kubyimba, guhagarika ibikorwa, emulifiseri, gutatanya, stabilisateur, agent ingana, nibindi.
Sodium carboxymethyl selulose (CMC) nigicuruzwa gifite umusaruro mwinshi, gikoreshwa cyane kandi cyoroshye gukoreshwa muri ethers ya selile, bakunze kwita “monosodium glutamate”.
1. Ikoreshwa mu gucukura peteroli na gaze gasanzwe, gucukura neza nindi mishinga
① Icyondo kirimo CMC kirashobora gutuma urukuta rw'iriba rugira umutsima unanutse kandi ushikamye ufite akayunguruzo gake, bigabanya gutakaza amazi.
② Nyuma yo kongeramo CMC mucyondo, uruganda rucukura rushobora kubona imbaraga nkeya zogosha, kugirango icyondo gishobore kurekura byoroshye gaze yizingiye, kandi mugihe kimwe, imyanda ijugunywa vuba mumwobo wibyondo.
IllingGucukura ibyondo, kimwe nibindi bitandukanya guhagarikwa, bifite igihe runaka cyo kubaho, kandi kongeramo CMC birashobora gutuma bihagarara neza kandi bikongerera igihe cyo kubaho.
④ Icyondo kirimo CMC ntigikunze kwibasirwa nububiko, ntabwo rero ari ngombwa kugumana agaciro gakomeye ka pH no gukoresha imiti igabanya ubukana.
⑤ Harimo CMC nkumuti wo gutobora ibyondo byoza amazi, bishobora kurwanya umwanda wumunyu utandukanye.
Icyondo kirimo CMC gifite ituze ryiza kandi kirashobora kugabanya gutakaza amazi nubwo ubushyuhe buri hejuru ya 150 ℃.
CMC ifite ubukonje bwinshi kandi murwego rwo hejuru rwo gusimbuza ikwiranye nicyondo gifite ubucucike buke, na CMC ifite ubukonje buke hamwe nubunini bwo gusimbuza ikwiranye nicyondo gifite ubucucike bwinshi. Guhitamo CMC bigomba kugenwa ukurikije ibihe bitandukanye nkubwoko bwibyondo, akarere nuburebure bwimbitse.
2. Ikoreshwa mu nganda, gucapa no gusiga amarangi. Inganda zikoresha imyenda zikoresha CMC nkibikoresho bingana ubunini bworoshye bwipamba, ubwoya bwa silike, fibre chimique, ivanze nibindi bikoresho bikomeye;
3. Ikoreshwa mu nganda zimpapuro CMC irashobora gukoreshwa nkimpapuro zorohereza impapuro nogukora ingero zinganda. Ongeraho 0.1% kugeza 0.3% CMC kuri pulp irashobora kongera imbaraga zingutu zimpapuro 40% kugeza kuri 50%, byongera gucikamo ibice 50%, kandi bikongerera inshuro 4 kugeza 5.
4. CMC irashobora gukoreshwa nka adsorbent yumwanda iyo yongewe kumashanyarazi; imiti ya buri munsi nkinganda zinyoza amenyo CMC glycerine yumuti wamazi ikoreshwa nkibishishwa byinyo yinyo; uruganda rwa farumasi rukoreshwa nkibibyimbye na emulisiferi; Umuti w'amazi wa CMC urabyimbye kandi ukoreshwa mugutunganya amabuye y'agaciro, nibindi.
5. Mu nganda zububumbyi, zirashobora gukoreshwa nkibikoresho bifata, bifata plastike, ibikoresho byo guhagarika glaze, ibikoresho byo gutunganya amabara, nibindi.
6. Yakoreshejwe mubwubatsi kugirango atezimbere amazi n'imbaraga
7. Ikoreshwa mu nganda zibiribwa. Inganda zikora ibiribwa zikoresha CMC ifite impamyabumenyi zisimbuye cyane nkibyimbye bya ice cream, ibiryo byabitswe, isafuriya itetse vuba, hamwe na stabilisateur ifuro ya byeri, nibindi.
8. Uruganda rwa farumasi ruhitamo CMC hamwe nubukonje bukwiye nkibikoresho bya tablet, bidahwitse, kandi bihagarika umukozi kugirango ahagarare.
Igihe cyo kohereza: Ugushyingo-03-2022