CMC inowanzova anionic polima komboni inogadzirwa nekuita serusisiro yechisikigo ine caustic alkali uye monochloroacetic acid, ine huremu hwe6400 (± 1 000).Iyo mikuru yezvigadzirwa ndeye sodium chloride uye sodium glycolate.CMC ndeye yakasikwa cellulose shanduko.Yakanzi zviri pamutemo "modified cellulose" neFood and Agriculture Organisation yeUnited Nations (FAO) uye World Health Organisation (WHO).
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Iwo makuru maratidziro ekuyera kunaka kweCMC ndiwo dhigirii rekutsiva (DS) uye kuchena.Kazhinji, zvinhu zveCMC zvakasiyana kana DS yakasiyana;iyo yakakwirira dhigirii yekutsiva, zviri nani kunyungudika, uye zviri nani kuve pachena uye kugadzikana kwemhinduro.Sekureva kwemishumo, kujeka kweCMC kuri nani kana dhigirii rekutsiva iri 0.7-1.2, uye viscosity yemushonga wayo wemvura ndiyo yakakura kana iyo pH kukosha iri 6-9.Kuti ive nechokwadi chehunhu hwayo, mukuwedzera kune kusarudzwa kweiyo etherifying mumiriri, zvimwe zvinhu zvinokanganisa dhigirii rekutsiva uye kuchena zvinofanirwa kutariswa, senge dosage hukama pakati pealkali uye etherifying agent, etherification nguva, system mvura yemukati, tembiricha. , pH kukosha, kugadzirisa kugadzirisa uye munyu.
Ongororo yezvakanakira uye zvakaipira sodium carboxymethyl cellulose
Kubudirira kwe sodium carboxymethyl cellulose zvechokwadi hakuna kumboitika.Kunyanya mumakore achangopfuura, kuwedzera kweminda yekushandisa uye kudzikiswa kwemitengo yekugadzira kwaita kuti kugadzirwa kwecarboxymethyl cellulose kuwedzere kufarirwa.Zvigadzirwa zvinotengeswa zvakasanganiswa.
Zvino, maitiro ekuona mhando ye sodium carboxymethyl cellulose, isu tinoongorora kubva kune mamwe emuviri nemakemikari maonero:
Chekutanga pane zvese, inogona kusiyaniswa kubva kune yayo carbonization tembiricha.Iyo yakawanda carbonization tembiricha ye sodium carboxymethyl cellulose ndeye 280-300 ° C. Kana iyo carbonized isati yasvika iyi tembiricha, zvino chigadzirwa ichi chine matambudziko.(Kazhinji carbonization inoshandisa muffle furnace)
Chechipiri, inosiyaniswa nekupisa kwayo kwemavara.Kazhinji, sodium carboxymethyl cellulose inoshandura ruvara kana yasvika kune imwe tembiricha.Iyo tembiricha yemhando ndeye 190-200 ° C.
Chechitatu, inogona kuzivikanwa kubva pakuonekwa kwayo.Kutaridzika kwezvizhinji zvigadzirwa ihupfu chena, uye saizi yaro yepakati kazhinji ndeye 100 mesh, uye mukana wekupfuura i98.5%.
Sodium carboxymethyl cellulose chigadzirwa chinoshandiswa zvakanyanya uye chine huwandu hwakasiyana hwemashandisirwo, saka panogona kunge paine zvekutevedzera pamusika.Saka maitiro ekuziva kana chiri chigadzirwa chinodiwa nevashandisi vanogona kupasa inotevera chitupa bvunzo.
Sarudza 0.5g ye sodium carboxymethyl cellulose, isina chokwadi kana chiri chigadzirwa che sodium carboxymethylcellulose, inyungudise mu 50mL yemvura uye kurunga, wedzera zvishoma nguva imwe neimwe, fambisa pa 60 ~ 70 ℃, uye kupisa kwemaminitsi makumi maviri gadzira yunifomu mhinduro, inotonhorera Mushure mekuonekwa kwemvura, bvunzo dzinotevera dzakaitwa.
1. Wedzera mvura kumushonga wekuedza kuti uwedzere kashanu, wedzera 0.5mL yechromotropic acid test solution kune 1 donhwe rayo, uye upise mumvura yekugezera yemvura kwemaminitsi gumi kuti ionekwe tsvuku-yepepuru.
2. Wedzera 10 mL yeacetone kusvika ku5 mL yemhinduro yekuedza, zunza uye nyatsosanganisa kuti uite white flocculent precipitate.
3. Wedzera 1mL ye ketone sulfate test solution ku 5mL ye test solution, sanganisa uye zunza kuti ubudise chiedza cheblue flocculent precipitate.
4. Iyo yakasara inowanikwa neashing yechigadzirwa ichi inoratidza maitiro anowanzoita sodium munyu, kureva, sodium carboxymethyl cellulose.
Kuburikidza nematanho aya, unogona kuona kana chigadzirwa chakatengwa chiri sodium carboxymethyl cellulose uye kuchena kwayo, iyo inopa iri nyore uye inoshanda nzira yevashandisi kusarudza nemazvo zvigadzirwa.
Nguva yekutumira: Nov-12-2022