CMC inowanzo kuve anionic polymer compound yakagadzirwa nekuita natural cellulose ne caustic alkali ne monochloroacetic acid, ine molecular huremu hwe6400 (±1 000). Zvigadzirwa zvikuru i sodium chloride ne sodium glycolate. CMC ndeye natural cellulose modification. Yakatumidzwa zviri pamutemo kuti "modified cellulose" neFood and Agriculture Organization yeUnited Nations (FAO) neWorld Health Organization (WHO).
mhando
Zviratidzo zvikuru zvekuyera hunhu hweCMC idanho rekutsiva (DS) uye kuchena. Kazhinji, hunhu hweCMC hunosiyana kana DS yakasiyana; kana danho rekutsiva rakakwirira, kunyunguduka kuri nani, uye kujeka uye kugadzikana kwemushonga kunowedzera. Sekureva kwemishumo, kujeka kweCMC kuri nani kana danho rekutsiva riri 0.7-1.2, uye viscosity yemvura yayo ndiyo yakakura kana pH iri 6-9. Kuti ive nechokwadi chekuti ine hunhu, pamusoro pesarudzo yemushonga unodziya, zvimwe zvinhu zvinokanganisa danho rekutsiva uye kuchena zvinofanirawo kufungwa nezvazvo, zvakaita sehukama hwemuyero uripo pakati pealkali nemushonga unodziya, nguva yekusimbisa, huwandu hwemvura yesystem, tembiricha, pH kukosha, huwandu hwemushonga uye munyu.
Kuongororwa kwezvakanaka nezvakaipa zve sodium carboxymethyl cellulose
Kugadzirwa kwe sodium carboxymethyl cellulose hakuna kumboitika. Kunyanya mumakore achangopfuura, kuwedzera kweminda yekushandisa uye kudzikiswa kwemitengo yekugadzira kwakaita kuti kugadzirwa kwe carboxymethyl cellulose kuve kwakakurumbira. Zvigadzirwa zviri kutengeswa zvakasanganiswa.
Zvadaro, kuti tingaziva sei mhando ye sodium carboxymethyl cellulose, tinoongorora kubva pane mamwe maonero emuviri nemakemikari:
Chekutanga, inogona kusiyaniswa nekupisa kwayo kwecarbonization. Kupisa kwakajairika kwecarbonization yesodium carboxymethyl cellulose i280-300 ° C. Kana ikapiswa isati yasvika tembiricha iyi, chigadzirwa ichi chinosangana nematambudziko. (Kazhinji carbonization inoshandisa muffle furnace)
Chechipiri, inosiyaniswa nekupisa kwayo kunobva pakuchinja kweruvara. Kazhinji, sodium carboxymethyl cellulose inochinja ruvara kana yasvika pakupisa kwakati. Kupisa kwacho kuri pakati pe190-200 °C.
Chechitatu, inogona kuonekwa kubva pakuonekwa kwayo. Chitarisiko chezvigadzirwa zvakawanda ihupfu huchena, uye saizi yezvidimbu zvayo inowanzova 100 mesh, uye mukana wekuti ipfuure nepakati i98.5%.
Sodium carboxymethyl cellulose chigadzirwa che cellulose chinoshandiswa zvakanyanya uye chine mashandisirwo akasiyana-siyana, saka panogona kunge paine zvimwe zvinotevedzera zviri pamusika. Saka nzira yekuziva kana chiri chigadzirwa chinodiwa nevashandisi inogona kupasa bvunzo inotevera yekuzivikanwa.
Sarudza 0.5g ye sodium carboxymethyl cellulose, iyo isina chokwadi kana iri chigadzirwa che sodium carboxymethylcellulose, inyungudise mu 50mL yemvura wokurunga, wedzera zvishoma nguva imwe neimwe, kurunga pa 60 ~ 70 ℃, wobva wapisa kwemaminitsi makumi maviri kuti ugadzire mhinduro yakafanana, inotonhorera. Mushure mekuonekwa kwemvura, bvunzo dzinotevera dzakaitwa.
1. Wedzera mvura mumushonga wekuyedza kuti uderedze kashanu, wedzera 0.5mL yemushonga wekuyedza wechromotropic acid mudonhwe rimwe chete rayo, woipisa mumvura kwemaminitsi gumi kuti iite setsvuku-pepuru.
2. Wedzera 10 mL yeacetone ku5 mL yemushonga wekuyedza, zunza wosanganisa zvakanaka kuti pave nechando chena.
3. Wedzera 1mL ye ketone sulfate test solution ku5mL ye test solution, sanganisa wozunza kuti iite flocculent precipitate yebhuruu rakareruka.
4. Zvasara zvinowanikwa nekutsvaira chigadzirwa ichi zvinoratidza maitiro emusanganiswa wemunyu wesodium, kureva sodium carboxymethyl cellulose.
Kuburikidza nematanho aya, unogona kuona kana chigadzirwa chakatengwa chiri sodium carboxymethyl cellulose uye kuchena kwacho, izvo zvinopa nzira iri nyore uye inoshanda yekuti vashandisi vasarudze zvigadzirwa nemazvo.
Nguva yekutumira: Mbudzi-12-2022