Chimiro che cellulose etana

Chaizvoizvo zvivakwa zviviricellulose etanavanopihwa muhuwandu 1.1 uye 1.2. Yega yega β-d-yakadzvanywa mazambiringa emubatanidzwa molecule

Iyo Sugar Chikamu

boka re ether. Nekuda kwekuvapo kwemapoka e hydroxyl, cellulose macromolecular ane intramolecular uye intermolecular uye intermolecular hydrogen zvisungo, zvakaoma kunyungudika mumvura.

Uye zvakaoma kunyungudika mune anenge ese organic sol. Nekudaro, mushure mekutenderwa kwemheremellose, mapoka ether anounzwa mumatehwe emanyorerwo,

Nenzira iyi, zvisungo zveHydrogen mukati uye pakati pemabholumbu emasero zvinoparadzwa, uye hydrophilikeity yakagadziriswawo, zvekuti solubility inogona kuvandudzwa.

zvakavandudzwa kwazvo. Pakati pavo, nhamba 1.1 ndiyo general chimiro chegumi chivhu chhydroglucose zvikamu zve cellulose ether molecular cheni, r1-r6 = h

kana organic stick. 1.2 chidimbu cheCarboxymethyl hydroxytl cellenchelose) cellen car

Dhigirii rekutsiva yehydroxytHyl ndeye 2.0, uye iyo molar kutsiviwa degree 3.0.

Kune imwe neimwe inoshatisa yemheremello cellulose, huwandu hwakazara hwekuwedzera hunogona kuratidzwa seyero yekutsiva (DS). yakagadzirwa nemitezo

Inogona kuoneka kubva kuumbwa kwemanyorerwo embozha kuti iyo degree rekutsiva kubva ku0-3. Ndiko kuti, imwe neimwe anyddroglucose unit mhete yemheremellose

. Nekuda kweiyo hydroxylkyl boka re cellulose, kutsiva

Iyo itstitifiyation inofanira kutangwazve kubva kune itsva yemahara hydroxyl boka. Naizvozvo, iyo degree rekutsiva rudzi urwu rwe cellulose ether inogona kuratidzwa mu moles.

degree rekutsiva (ms). Iyo inonzi mol al degree yekutsiva inoratidza huwandu hwekuchinja-kuwedzerwa mumiririri akawedzerwa kune yega yega Anhydroglucose unit yeCellulose

Avhareji huwandu hwevanoita.

1 General Stature yeGlucose unit

2 zvidimbu zve cellulose ether moleky maketani

1.2.2 Kuongororwa kwe cellulose ana

Kunyangwe ma cellulose ana ana vana vasina kuroora kana kusanganisa, zvivakwa zvavo zvakange zvakasiyana. Cellulose macromolecules

Kana iyo hydroxyl boka reiyo unit inotsiva neHydrophilic Boka, chigadzirwa chinogona kuve nedanho rakaderera rekutsiva pasi pemamiriro ezvinhu akadzika ekutsiva.

Iyo ine imwe yekuziva mvura; Kana ikatsanangurwa neboka re hydrophobic, chigadzirwa chine huwandu hwenhamba hwekutsiva chete kana iyo degree rekutsiva riri mwero.

Mvura-yakachena, isingasviki yekutsiva Cellulose zvigadzirwa zvigadzirwa zvinogona kungozvimba mumvura, kana kunyungudutswa mune isinganyaradzi yakadzika alkali mhinduro

pakati.

Sekureva kwemhando dzevasina kutsiva, cellulose ethero dzinokamurwa kuita zvikamu zvitatu: Alkyl mapoka, akadai methyl cellulose, ethyl cellalose;

Hydroyieloyills, yakadai se hydroxytHyl cellulose, hydroxypruppropyl cellulose; vamwe, senge carboxymethyl cellose, etc. kana iyo ionization

Kugadziriswa, cellaulose etana kunogona kukamurwa mu: ionic, senge carboxymethyl cellevose; zvisiri-ionic, senge hydroxyethyl cellulose; yakasanganiswa

Nyora, senge hydroxythetl carboxymeymell cellulose. Maererano nekugadziriswa kwekusarudzika, cellulose inogona kukamurwa mu: mhou-svutugadzike, senge carboxymethyl cellose,

HydroxytHyl cellulose; Mvura-inzwa, senge methyl cellulose, nezvimwe.

1.2.3 Zvivakwa uye Zvishandiso zveCellulose ana

Cellulose ether rudzi rwechigadzirwa mushure memaCellulose eriraification shanduko, uye cellulose ether ine zvakawanda zvakakosha zvivakwa. kunge

Iyo ine yakanaka firimu-inoumba zvivakwa; Sezvinoshambadzira, ine yakanaka mvura solubility, inokonzeresa zvivakwa, kuchengetwa kwemvura uye kugadzikana;

5

Plain ether isinganetsi, isina-chepfu, uye ine yakanaka biocomputer. Pakati pavo, carboxymethyl cellerose (cmc) ine "indasitiri monosdium glutamate"

Nickname.

1.2.3.1 Film Formation

Dhigirii rekuziya kwe cellulose ether ine pesvedzero huru pane yayo firimu-yekugadzira mafirimu ekuumba senge kugona kwemafirimu uye kusanganisa simba. Cellulose ether

Nekuda kwesimba rayo rakanaka rekusimba uye kuwirirana kwakanaka nema resins dzakasiyana-siyana, inogona kushandiswa mumapurasitiki mafirimu, anomamatira uye zvimwe zvinhu.

Kugadzirira kwezvinhu.

1.2.3.2 Solubility

Nekuda kwekuvapo kwemazhinji mapoka ehydroxyl pamhete yeiyo okisijeni-ine glucose unit, cellulose ethes ine zviri nani mvura. uye

Zvichienderana neCellulose Ether Substituent uye degree rekutsiva, kune zvakare kusarudzika kwakasiyana kune organic sol sol.

1.2.3.3 Kukakavara

Cellulose ether yakanyungudutswa mumamiriro ekunze muchimiro che colloid, nepo degree rePolymerization ye consulose ether the cellulose

Viscosity ye ether mhinduro. Kusiyana neNewtonia Fluids, viscosity ye cellulose ether solutions inoshanduka neshekeri, uye

Nekuda kwechimiro ichi cheMacRossecules, iyo visikopo yeMhinduro ichawedzera nekukurumidza nekuwedzera kweiyo yakasimba zvemukati yemasero, zvisinei iyo yekugadzirisa zvisizvo

Viscosity zvakare inoderera nekukurumidza nekuwedzera tembiricha [33].

1.2.3.4 Degradability

Iyo cellulose ether mhinduro yakanyungudika mumvura kwenguva yakati rebonde ichakura mabhakitiriya, nekudaro achigadzira enzyme bacteria uye kuparadza iyo cellulose ether chikamu.

Iyo yepedyo isina kugadziriswa glucose unit bonds, nekudaro ichidzikisa huwandu hwemanyorerwe emaromo. Naizvozvo, cellulose etana

Kuchengetedzwa kwemhinduro dzemvura kunoda kuwedzera kweimwe huwandu hwezvivakwa.

Uye zvakare, cellulose ana manyama ane zvimwe zvakawanda zvakasarudzika zvivakwa zvakaita sebasa, ionic chiitiko, foam kugadzikana uye kuwedzera

gel chiito. Nekuda kweizvi zvivakwa, cellaulose etana anoshandiswa mune zvemavara, mapepa ekuroora, zvigadziriso zvekuumba, zvizoro, chikafu, mushonga,

Inoshandiswa zvakanyanya muminda yakawanda.

1.3 Nhanganyaya yekudyara zvigadzirwa

Kubva kuOrview of 1.2 Cellulose ether, inogona kuonekwa kuti zvinyorwa zvechigadzirwa zvekugadzirira cellulose ether inonyanya kukotoni cellulose, uye chimwe chezvinyorwa zvemusoro wenyaya iyi

Iyo ndeye kushandisa cellulose inobviswa kubva padhirowa zvishandiso zvekutsiva machira cellulose kugadzirira cellulose ether. Izvi zvinotevera chiratidzo chepfupi kune chirimwa

zvinhu.

Sezvakajairika zviwanikwa senge mafuta, marasha uye gasi rechisikigo ari kuderera, kusimudzira kwezvigadzirwa zvakasiyana-siyana zvichibva kwavari, zvakaita kunge maficha echigadzirwa uye mafirimu emisizi, zvichawedzera kurambidzwa. Nekukura kwekuramba kweturu nenyika dzese nyika (kunyanya

Iyo inyika yakashamisika) uyo anobhadhara zvakanyanya kutarisisa dambudziko rekusvibiswa kwezvakatipoteredza. Cellalose cellulose ine biodegradability uye kutipoteredza kubatana.

Zvichava zvishoma nezvishoma zvinobva kune sosi huru yezvinhu zvigadzirwa zve fiber.