Hydroxyethyl cellulose gel kuumbwa

Hydroxyethyl cellulose (HEC) isiri-ionic mvura-inonyungudika polima iyo inoshandiswa zvakanyanya mumaindasitiri akasiyana nekuda kwekukora, kusunga, uye kudzikamisa zvivakwa.Kunyanya, HEC inowanzoshandiswa mukugadzirwa kwemajeri, ayo ari semi-solid kana zvinhu zvakasimba zvine jelly-like consistency uye zvinokwanisa kubata mvura yakawanda.Muchikamu chino, tichaongorora kugadzirwa kwe hydroxyethyl cellulose gel uye zvinhu zvinogona kukanganisa maitiro ayo.

Kugadzirwa kweiyo hydroxyethyl cellulose gel kunosanganisira akati wandei akakosha zvikamu, zvinosanganisira HEC, solvent, uye zvimwe zvinowedzera sezvinodiwa.Imwe yakajairika solvent inoshandiswa muHEC gel maumbirwo imvura, iyo inowanzo shandiswa kunyungudutsa HEC polymer uye kugadzira iyo gel.Zvisinei, zvimwe zvinonyungudutsa zvakadai seglycerin, propylene glycol, uye ethanol zvinogonawo kushandiswa kugadzirisa zvinhu zvegel.

Pamusoro peiyo solvent, zvakasiyana-siyana zvinowedzera zvinogona kuverengerwa mune hydroxyethyl cellulose gel kuumbwa kugadzirisa hunhu hwayo.Semuenzaniso, zvinodzivirira zvinogona kuwedzerwa kudzivirira kukura kwebhakitiriya uye kuwedzera hupenyu hwesherufu yegel, nepo surfactants inogona kushandiswa kubatsira emulsify gel uye kuvandudza kuenderana kwayo.Zvimwe zvakajairika zvinowedzera zvinosanganisira humectants, iyo inobatsira kuchengetedza mwando mujeri, uye mavara kana mapefiyumu kuti awedzere kutaridzika kwayo nekunhuhwirira.

Chimwe chinhu chakakosha kutariswa mukugadzirwa kwe hydroxyethyl cellulose gel ndiyo inodiwa viscosity kana ukobvu hwechigadzirwa chekupedzisira.Iyo viscosity yegel inotarirwa nehuwandu hweHEC polymer, pamwe nereshiyo yekunyungudutsa kune polymer.Kukwirira kwepamusoro kweHEC uye kuderera kwe solvent-to-polymer ratios kunozoguma nekukora, yakawanda viscous gel.Sarudzo yekunyungudutsa inogonawo kukanganisa viscosity yegel, ine zvimwe zvinonyungudutsa zvinogadzira gels zvine gobvu kana kutetepa kuenderana.

Chimwe chinhu chekufunga nezvacho mukugadzirwa kwe hydroxyethyl cellulose gel kujeka kwegel kana kupenya.HEC gels inogona kubva kune yakajeka uye yakajeka kune opaque uye milky, zvichienderana nekugadzirisa uye kuwedzerwa kwezvimwe zvikamu.Kushandiswa kwezvimwe zvinonyungudutsa kana zvinowedzera zvinogona kukanganisa kujeka kwegel, uye mamwe mamakisi eHEC anogona kunge akanyanya kana kushoma opaque zvichienderana nehuremu hwavo hwemamorekuru uye dhigirii rekutsiva.

Imwe nyaya inogona kuitika mukugadzira hydroxyethyl cellulose gels ndiko kugadzikana kwavo nekufamba kwenguva.Mune zvimwe zviitiko, HEC gels inogona kutarisana ne syneresis, iyo ndiyo kupatsanurwa kwemvura kubva kune gel nekuda kwekuchinja kwekushisa kana zvimwe zvinhu.Kuti ugadzirise nyaya iyi, stabilizers uye thickeners akadai xanthan gum kana carrageenan inogona kuwedzerwa pakuumbwa kwekuvandudza kugadzikana kwejeri uye kudzivirira syneresis.

Mukupedzisa, kuumbwa kweiyo hydroxyethyl cellulose gel kunosanganisira kunyatsoenderana kwezvikamu zvakasiyana-siyana uye zvinhu, kusanganisira kusarudzwa kwekunyungudutsa, kusungirirwa kweHEC polymer, uye kuwedzerwa kwezvimwe zvinowedzera kugadzirisa zvinhu zvegel.Nekunyatsodzora izvi zvakasiyana-siyana, zvinokwanisika kugadzira hydroxyethyl cellulose gel ine viscosity inodiwa, kujeka, uye kugadzikana, iyo inogona kushandiswa mumhando dzakasiyana-siyana dzekushandisa, kubva kune zvigadzirwa zvekuchengeta munhu kusvika kune maindasitiri machira uye adhesives.