Nhanganyaya yeHydroxyethylcellulose (HEC):
Hydroxyethylcellulose inotorwa kubva kune cellulose, inongoitika polysaccharide inowanikwa mumasero madziro emiti. Cellulose inoumbwa nekudzokorora mayuniti eglucose akabatanidzwa pamwechete ne β-1,4 glycosidic bonds. Hydroxyethylcellulose inowanikwa nekugadzirisa cellulose kuburikidza nekuisa hydroxyethyl mapoka (-CH2CH2OH) pamusana wayo.
Kugadzira Maitiro:
Etherification yeCellulose: Kugadzirwa kweHEC kunosanganisira etherification ye cellulose. Izvi zvinowanzotanga ne cellulose inotorwa kubva pahuni pulp kana machira ekotoni.
Kuita neEthylene Oxide: Cellulose inobva yaitwa ne ethylene oxide pasi pemamiriro ealkaline. Kuita uku kunotungamira mukutsiviwa kwemapoka ehydroxyl pamusana we cellulose nemapoka ehydroxyethyl, zvichikonzera hydroxyethylcellulose.
Kucheneswa: Chigadzirwa chacho chinobva chacheneswa kubvisa chero mareagents asina kubatwa uye zvigadzirwa zveparutivi.
Zvimiro zveHydroxyethylcellulose:
Solubility: HEC inonyungudika mumvura inotonhora uye inopisa, ichigadzira zvakajeka kune zvishoma turbid mhinduro zvichienderana nekusungwa.
Viscosity: Inoratidza pseudoplastic maitiro, zvichireva kuti viscosity yayo inoderera nekuwedzera shear rate. Iyo viscosity yeHEC mhinduro inogona kugadziridzwa nezvinhu zvakasiyana-siyana sekutarisa uye dhigirii rekutsiva.
Firimu-Kuumba Zvivakwa: HEC inogona kuumba anochinjika uye akabatana mafirimu, ichiita kuti ibatsire mune akasiyana maapplication uko kuumbwa kwemafirimu kunodiwa.
Thickening Agent: Imwe yemashandisirwo ekutanga eHEC seyakakora mumiriri mune akasiyana mafomati, senge zvizorwa, mishonga yemishonga, uye zvigadzirwa zvekuchengeta munhu.
Kushandiswa kweHydroxyethylcellulose:
Cosmetics uye Personal Care Zvigadzirwa: HEC inoshandiswa zvakanyanya muzvizoro uye zvigadzirwa zvekuchengeta munhu seyakakora, stabilizer, uye firimu-inogadzira mumiriri mune zvigadzirwa senge lotions, creams, shampoos, uye mazino.
Pharmaceuticals: Mukugadzirwa kwemishonga, HEC inoshanda semumiriri wekumisa, binder, uye inodzorwa-kuburitsa matrix mumucheka wepiritsi uye oral formulations.
Paints uye Coatings: HEC inoshandiswa mumvura-yakavakirwa pendi uye mapendi seyakakora uye rheology modifier kudzora viscosity uye kunatsiridza application zvivakwa.
Indasitiri yeChikafu: Muindasitiri yechikafu, HEC inoshandiswa seyakakora uye inodzikamisa mumiriri mune zvigadzirwa zvakaita sesosi, madhirezi, uye zvigadzirwa zvemukaka.
Nhaurirano Yakasikwa kana Synthetic Classification:
Kurongeka kwehydroxyethylcellulose seyakasikwa kana kuti yakagadzirwa kunoenderana nekukakavadzana. Hedzinoi nharo kubva mumaonero maviri:
Nharo dzeKuronga seSynthetic:
Kemikari Kugadziriswa: HEC inotorwa kubva kune cellulose kuburikidza nemakemikari ekugadzirisa maitiro anosanganisira maitiro e cellulose ne ethylene oxide. Uku kuchinjwa kwekemikari kunoonekwa sechinhu chekugadzira muchisikigo.
Kugadzirwa Kweindasitiri: HEC inonyanya kugadzirwa kuburikidza nemaindasitiri maitiro anosanganisira anodzorwa maitiro uye nhanho dzekuchenesa, izvo zvinowanzoitika mukugadzirwa kwekomboni.
Shanduko Dhigirii: Iyo dhigirii yekutsiva muHEC inogona kunyatsodzorwa panguva yekubatanidza, ichiratidza mavambo ekugadzira.
Nharo dzeKuronga seZvakasikwa:
Yakatorwa kubva kuCellulose: HEC inozobva ku cellulose, yakasikwa polymer inowanikwa muzvirimwa.
Renewable Source: Cellulose, iyo yekutanga kugadzirwa kweHEC, inowanikwa kubva kune zvinogonekazve zviwanikwa zvakaita sehuni pulp uye donje.
Biodegradability: Kufanana neselulosi, HEC inoodza, ichiputsika kuita zvisingakuvadze byproducts munharaunda nekufamba kwenguva.
Kushanda Kufanana neCellulose: Pasinei nekugadziriswa kwemakemikari, HEC inochengetedza zvinhu zvakawanda zve cellulose, zvakadai sekunyungudika mumvura uye biocompatibility.
hydroxyethylcellulose i polymer inoshanda zvakasiyana-siyana inotorwa kubva muselulosi kuburikidza nemakemikari ekugadzirisa maitiro. Kunyange kugadzirwa kwayo kuchisanganisira maitiro ekugadzira uye maindasitiri maitiro, inozopedzisira yatorwa kubva kune yakasikwa uye inovandudzwa sosi. Nharo pamusoro pekuti HEC inofanirwa kuverengerwa seyakasikwa here kana kuti yakagadzirwa inoratidza kuomarara kwekutsanangura aya mazwi mumamiriro ekugadzirisa mapolymer echisikigo. Zvakangodaro, biodegradability, kudzoreredzwa kutsvagisa, uye kushanda zvakafanana kune cellulose zvinoratidza kuti ine hunhu hweese echisikigo uye ekugadzira makomisheni, ichidzima miganhu pakati pezvikamu zviviri izvi.
Nguva yekutumira: Kubvumbi-01-2024