Hydroxyethylcellulose (HEC) isimba rakasiyana-siyana uye rinoshanda iro rinoshandiswa zvakanyanya mumaindasitiri akasiyana.Iyi komisheni inotorwa kubva ku cellulose, yakasikwa polymer inowanikwa muhuwandu hwakawanda muchirimwa sero madziro.HEC's yakasarudzika zvivakwa inoita kuti ive yakanakira kukora zvakasiyana zvigadzirwa, kubva kune zvega zvega zvigadzirwa kusvika kune maindasitiri maumbirwo.
Cellulose Overview
Cellulose i-carbohydrate yakaoma inoumbwa nemaketani akaenzana emamorekuru eglucose akabatanidzwa ne β-1,4-glycosidic bond.Ndiyo chikamu chikuru chemaitiro emiti yesero madziro, ichipa kuomarara uye kusimba kwekudyara maseru.Zvisinei, chimiro chayo chekuzvarwa hachina kunyungudika uye chine mashandiro mashoma kune mamwe maapplication.
cellulose derivatives
Kuti uwedzere kushanda kwe cellulose, zvakasiyana-siyana zvinobva zvagadzirwa nekushandura chimiro chayo.Imwe yakadaro inotorwa ndeye hydroxyethyl cellulose (HEC), umo hydroxyethyl mapoka anounzwa mu cellulose musana.Uku kugadziridzwa kunopa HEC yakasarudzika zvivakwa, ichiita kuti inyungudika mumvura uye inoshanda zvakanyanya seyakakora.
Zvimiro zveHEC
Solubility
Imwe yemhando huru yeHEC ndeyekunyungudika kwemvura.Kusiyana necellulose yechisikigo, HEC inonyungudika nyore mumvura, ichigadzira mhinduro yakajeka.Kunyungudika uku kunoita kuti zvive nyore kusanganisa mumhando dzakasiyana siyana.
Rheological properties
HEC inoratidzira pseudoplastic kana shear-thinning maitiro, zvichireva kuti viscosity yayo inoderera pasi pekunetseka kweshear uye inowedzera zvakare mushure mokunge kushushikana kwapera.Iyi rheology yakakosha kune zvikumbiro zvinoda kureruka kwekuparadzira kana kudurura, senge kugadzirwa kwependi, zvinonamira uye zvigadzirwa zvekuchengeta munhu.
pH kugadzikana
HEC yakagadzikana pamusoro pehupamhi hwepH, ichiita kuti ive yakakodzera kushandiswa mune acidic, neutral uye alkaline formulations.Izvi zvakasiyana-siyana zvakakonzera kutorwa kwayo kwakapararira mumaindasitiri akasiyana siyana anosanganisira cosmetics, pharmaceuticals uye chikafu.
Zvikumbiro zveHEC
zvigadzirwa zvekuchengeta munhu
Shampoos uye Conditioners: HEC inowanzo shandiswa kukora zvigadzirwa zvekuchengetedza bvudzi, ichipa yakanakira viscosity uye kuvandudza kuumbwa kwese.
Makirimu uye Lotions: Mukugadzirwa kweganda rekuchengetedza, HEC inobatsira kuzadzisa inodiwa uye inosimudzira kupararira kwemafuta uye lotions.
Mushonga wemazino: Maitiro ayo epseudoplastic anogonesa magadzirirwo emazino anobvumira kugovera nyore uye kupararira panguva yekukwesha.
Paints uye Coatings
Latex pendi: HEC inobatsira kuwedzera viscosity uye kugadzikana kwependi yelatex, kuve nechokwadi kunyangwe kushandiswa kwepamusoro.
Adhesives: Mukugadzira anonamira, HEC inobatsira kudzora viscosity uye kunatsiridza bonding zvivakwa.
mushonga
Oral Suspensions: HEC inoshandiswa kukobvuta kumiswa kwemuromo kuti ipe fomu yakagadzikana uye inonaka yemusanganiswa wemishonga.
Topical gels: The solubility yeHEC mumvura inoita kuti ive yakakodzera kugadzira topical gels, kuve nechokwadi chekushandisa uye kunyura.
food industry
Sauces uye mapfekero: HEC inoshandiswa kukora sosi uye mapfekero, kuvandudza magadzirirwo avo uye muromo.
Zvigadzirwa Zvakabikwa: Mune mamwe mabikirwo ekubikira, HEC inobatsira kukora mabheti uye mukanyiwa.
Kugadzirwa uye kutonga kwehutano
synthesis
HEC inowanzogadzirwa ne etherification ye cellulose ine ethylene oxide pasi pemamiriro ekudzora.Dhigirii rekutsinhanisa (DS) yeboka re hydroxyethyl rinogona kugadziriswa panguva yekugadzira, nokudaro inokanganisa kushanda kwekupedzisira kweHEC.
QC
Matanho ekutonga kwehutano anokosha kuti ave nechokwadi chekushanda kweHEC mune zvakasiyana-siyana zvekushandisa.Maparamendi akadai semamorekuru huremu, dhigirii rekutsiva uye kuchena anotariswa zvakanyatsonaka panguva yekugadzira.
kufunga nezvezvakatipoteredza
Sezvinoita chero musanganiswa wemakemikari, zvakatipoteredza zvakakosha.HEC inotorwa kubva ku cellulose uye inogadzika zvakanyanya biodegradable pane mamwe ekugadzira thickeners.Nekudaro, zvakakosha kuti titarise iyo yakazara nharaunda kukanganisa kwekugadzirwa kwayo uye kushandiswa mumashandisirwo akasiyana.
mukupedzisa
Muchidimbu, hydroxyethylcellulose (HEC) inomira pachena seyakagwinya uye inoshanda zvakasiyana-siyana ine maapplication mumaindasitiri mazhinji.Hunhu hwayo hwakasiyana, hunosanganisira kunyungudika kwemvura, rheological maitiro uye pH kugadzikana, inoita kuti ive chinhu chakakosha mumhando dzakasiyana dzekugadzira zvigadzirwa.Sezvo maindasitiri arikuramba achitsvaga dzimwe nzira dzine hushamwari kwezvakatipoteredza, HEC's biodegradable zvivakwa zvakatorwa kubva kune chirimwa cellulose inoita kuti ive sarudzo inogoneka kune akasiyana maapplication.Kuenderera mberi nekutsvagisa uye hunyanzvi mune cellulose zvinobva seHEC zvinogona kutungamira kune imwe nhanho, ichipa kushanda kwepamusoro uye kuderedzwa kwezvakatipoteredza.
Nguva yekutumira: Zvita-02-2023