Kugadzira Maitiro uye Hunhu hweSodium Carboxymethyl Cellulose

Sodium carboxymethyl cellulose (Na-CMC) i polymer inonyungudika mumvura inotorwa kubva muselulosi, iyo inoshandiswa zvakanyanya mumhando dzakasiyana dzemaindasitiri senge chikafu, mishonga, zvizorwa, machira, uye kuchera mafuta. Iyo inozivikanwa nekunaka kwayo kukora, kudzikamisa, uye kusunga zvivakwa. Muchikamu chino, tichakurukura maitiro ekugadzira uye maitiro e sodium carboxymethyl cellulose.

Kugadzira Maitiro eSodium Carboxymethyl Cellulose

Kugadzirwa kweNa-CMC kunosanganisira matanho akati wandei, kusanganisira kubviswa kweselulosi kubva muhuni pulp, machira ekotoni, kana mamwe masosi, zvichiteverwa nekugadziriswa kwe cellulose kugadzira mapoka ecarboxymethyl. Iyo nzira yekugadzira yeNa-CMC inogona kupfupikiswa seinotevera:

1. Cellulose Extraction: Cellulose inotorwa kubva muhuni pulp kana mamwe masosi kuburikidza neakatevedzana emakanika uye makemikari ekurapa, kusanganisira pulping, bleaching, uye kunatsa.
2. Alkali Kurapa: Iyo yakabviswa cellulose inobatwa neine alkaline solution yakasimba, kazhinji sodium hydroxide (NaOH), kuzvimba mafiibhi e cellulose uye kufumura reactive hydroxyl mapoka.
3. Etherification: Iyo yakazvimba cellulose fibers inobva yaitwa ne sodium monochloroacetate (SMCA) pamberi pe alkaline catalyst yakadai se sodium carbonate (Na2CO3) kuunza mapoka ecarboxymethyl kumusana we cellulose.
4. Neutralization: Iyo carboxymethylated cellulose inozogadziriswa neasidhi yakadai sehydrochloric acid (HCl) kana sulfuric acid (H2SO4) kuumba Na-CMC.
5. Kucheneswa uye Kuomesa: Iyo Na-CMC inocheneswa nekugeza uye kusefa kubvisa chero tsvina uye yobva yaomeswa kuti iwane mahara-inoyerera poda.

Hunhu hweSodium Carboxymethyl Cellulose

Zvimiro zveNa-CMC zvinogona kusiyana zvichienderana nehuwandu hwekutsiva (DS), izvo zvinoreva huwandu hwemapoka ecarboxymethyl paanhydroglucose unit (AGU) ye cellulose. Mamwe eakakosha maitiro eNa-CMC ndeaya:

1. Solubility: Na-CMC yakanyanya kunyungudika mumvura uye inogona kugadzira yakajeka, viscous mhinduro mumvura.
2. Viscosity: Iyo viscosity yeNa-CMC mhinduro zvinoenderana nekutarisa, DS, uye molecular huremu hwepolymer. Na-CMC inozivikanwa nekunaka kwayo kukora zvivakwa uye inogona kushandiswa kuwedzera viscosity yemhinduro uye kumiswa.
3. pH Kugadzikana: Na-CMC yakagadzikana pamusoro pehuwandu hwakawanda hwepH kukosha, kubva kune acidic kusvika kune alkaline, zvichiita kuti ive yakakodzera kushandiswa mune dzakasiyana siyana.
4. Kushivirira Munyu: Na-CMC inoshivirira zvakanyanya kumunyu uye inogona kuchengetedza viscosity yayo uye kugadzikana pamberi pe electrolytes.
5. Thermal Kugadzikana: Na-CMC yakagadzikana pakupisa kwakanyanya uye inogona kushandiswa mune dzakasiyana siyana maindasitiri maitiro anoda yakakwirira-tembiricha mamiriro.
6. Biodegradability: Na-CMC inoodza uye inogona kuraswa zvakachengeteka munzvimbo.

Mhedziso

Sodium carboxymethyl cellulose ipolymer inoshandiswa zvakasiyana-siyana inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana nekuda kwekukora kwayo, kudzikamisa, uye kusunga zvivakwa. Maitiro ekugadzira eNa-CMC anosanganisira kubviswa kweselulosi kunoteverwa nekugadziriswa kweselulosi kugadzira mapoka ecarboxymethyl. Na-CMC ine akati wandei hunhu senge solubility, viscosity, pH kugadzikana, munyu kushivirira, kugadzikana kwekupisa, uye biodegradability, izvo zvinoita kuti ive yakakodzera kushandiswa mukushandisa kwakasiyana. Izvo zvivakwa zveNa-CMC zvinogona kugadziridzwa nekudzora dhigirii rekutsiva, uremu hwemamorekuru, uye kutarisisa, zvichiita kuti ive chishandiso chakakosha kune akasiyana maindasitiri maitiro.