Hydroxyethylcellulose (HEC) i polymer inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana, kusanganisira zvekuzora, mishonga, uye chikafu. Iyo yakagadziridzwa cellulose derivative iyo inonyanya kutorwa kubva kune yakasikwa cellulose, polysaccharide inowanikwa mumasero madziro emiti. Mushonga uyu unoshanda zvakasiyana-siyana unogadzirwa kuburikidza nekugadzirisa makemikari maitiro anosanganisira kuita cellulose ne ethylene oxide kuunza mapoka ehydroxyethyl kumusana we cellulose. Iyo inokonzeresa hydroxyethylcellulose ine yakasarudzika rheological zvivakwa, zvichiita kuti ive yakakosha mumhando dzakasiyana dzekushandisa.
Cellulose, iyo yekutanga sosi zvinhu zve hydroxyethylcellulose, yakawanda muzvisikwa uye inogona kuwanikwa kubva kwakasiyana siyana zvidyarwa. Zvinowanzowanikwa zve cellulose zvinosanganisira huni pulp, donje, hemp, uye zvimwe zvirimwa zvine fibrous. Kubviswa kwe cellulose kunowanzo sanganisira kuputsa zvinhu zvechirimwa kuburikidza nemakanika kana kemikari maitirwo ekuparadzanisa cellulose fiber. Kana yangove yega, cellulose inoenderera mberi nekugadziriswa kubvisa tsvina uye kuigadzirira kugadzirisa kemikari.
Iyo synthesis yehydroxyethylcellulose inosanganisira kuita kweselulosi ne ethylene oxide pasi pemamiriro akadzorwa. Ethylene oxide is an organic compound ine kemikari formula C2H4O, inowanzoshandiswa mukugadzirwa kwemakemikari akasiyana-siyana emaindasitiri. Kana ikaitwa ne cellulose, ethylene oxide inowedzera hydroxyethyl (-OHCH2CH2) mapoka kumusana we cellulose, zvichiita kuti pave nekugadzirwa kwehydroxyethylcellulose. Iyo dhigirii yekutsiva, iyo inoreva huwandu hwemapoka e-hydroxyethyl akawedzerwa paglucose unit mucheni ye cellulose, inogona kudzorwa panguva ye synthesis process kugadzirisa zvimiro zvechigadzirwa chekupedzisira.
Kugadziriswa kwekemikari ye cellulose kuti ibudise hydroxyethylcellulose inopa zvinhu zvakati wandei kune iyo polymer. Zvinhu izvi zvinosanganisira kuwedzera kunyungudika kwemvura, kuwedzera kukora uye kugona kwegelling, kusimba kwakawedzera pamusoro pehupamhi hwepH uye tembiricha mamiriro, uye kuenderana nezvimwe zvakasiyana-siyana zvinowanzoshandiswa mukugadzira. Aya maitiro anoita kuti hydroxyethylcellulose ive yekuwedzera yakawanda ine akawanda maapplication mumaindasitiri akasiyana.
Muindasitiri yezvizorwa, hydroxyethylcellulose inoshandiswa zvakanyanya seyakakora mumiriri, stabilizer, uye emulsifier mune zvakasiyana siyana zvekuchengetedza zvigadzirwa senge shampoos, conditioners, lotions, makirimu, uye gels. Kugona kwayo kugadzirisa viscosity uye magadzirirwo emagadzirirwo anobvumira kugadzirwa kwezvigadzirwa zvine hunhu hunodiwa hwekunzwa uye maitiro ekuita. Pamusoro pezvo, hydroxyethylcellulose inogona kuita semugadziri wemufirimu, ichipa chipingamupinyi chekudzivirira paganda kana bvudzi pamusoro.
Mukugadzirwa kwemishonga, hydroxyethylcellulose inoshandiswa sebhainda mukugadzira mapiritsi, uko inobatsira kubata zvinhu zvinoshanda pamwe chete nekuvandudza simba remagetsi remapiritsi. Inoshandiswawo sechinhu chinomisa mumiriri mukugadzirwa kwemvura kudzivirira kugadzika kwezvimedu zvakasimba uye kuve nechokwadi chekugovera kwakafanana kwezvinhu zvinoshanda. Uyezve, hydroxyethylcellulose inoshanda senge viscosity modifier mune ophthalmic mhinduro uye topical gels, inosimudzira yavo yekuzora zvivakwa uye kurebesa nguva yavo yekugara panzvimbo yemeso kana ganda.
Muindasitiri yechikafu, hydroxyethylcellulose inowana zvikumbiro seyakakora, inodzikamisa, uye gelling mumiriri mune dzakasiyana siyana zvigadzirwa zvekudya, zvinosanganisira sosi, madhirezi, madhiri, uye zvinwiwa. Inogona kuvandudza magadzirirwo, muromo, uye kugadzikana kwesherufu yekugadzira chikafu pasina kukanganisa kuravira kwavo kana kunhuwa. Hydroxyethylcellulose inowanzo zivikanwa seyakachengeteka (GRAS) kuti ishandiswe muchikafu nevakuru vane masimba vakaita seUS Food and Drug Administration (FDA) neEuropean Food Safety Authority (EFSA).
hydroxyethylcellulose yakakosha cellulose derivative inotorwa kubva kune yakasikwa cellulose masosi kuburikidza nekemikari shanduko ne ethylene oxide. Yayo yakasarudzika rheological zvimiro inoita kuti ive yekuwedzera inosiyana-siyana muzvizoro, mishonga, uye zvigadzirwa zvekudya, uko inoshanda seyakakora, stabilizer, binder, emulsifier, uye gelling agent. Iine huwandu hwayo hwakasiyana hwekushandisa uye yakanaka kuchengetedza mbiri, hydroxyethylcellulose inoramba iri chinhu chakakosha mumhando dzakasiyana dzevatengi uye maindasitiri.
Nguva yekutumira: Kubvumbi-12-2024