Hydroxypropylmethylcellulose (HPMC) i polymer yakagadzirwa kubva mu cellulose. Seyakakora, emulsifier uye stabilizer, inoshandiswa zvakanyanya mumishonga, chikafu uye cosmetic maindasitiri. HPMC inoshandiswawo mukuvaka zvinhu zvakaita sesimende, dhaka uye gypsum kuvandudza kushanda uye kuchengetedza mvura. Muchikamu chino, tichakurukura kugadzirwa kweHPMC uye kushandiswa kwayo mumaindasitiri akasiyana.
HPMC kugadzirwa
HPMC inogadzirwa nekuita cellulose nepropylene oxide uye methyl chloride pasi pemamiriro ealkaline. Iyo nzira inosanganisira matanho anotevera:
Danho 1: Alkaline kurapwa kwe cellulose
Iyo cellulose inobatwa necaustic solution ye sodium hydroxide kuti ichinje kuita alkaline cellulose. Kurapa uku kunoita kuti mapoka e-hydroxyl e-cellulose awedzere kushanda, achifambisa maitiro anotevera.
Danho 2: Kuita nePropylene Oxide
Munhanho inotevera, propylene oxide inowedzerwa kune alkaline cellulose pasi pekudzora tembiricha uye kumanikidza mamiriro. Mhedzisiro yacho inoitwa pamberi peiyo catalyst yakadai seyepamusoro amine kana alkali simbi hydroxide. Propylene oxide inopindirana nemapoka ehydroxyl e cellulose kuumba hydroxypropyl cellulose.
Nhanho 3: Quaternization neMethyl Chloride
Hydroxypropylcellulose yakabva yaitwa quaternized nemethyl chloride kugadzira HPMC. Kuita kunoitwa pasi pemamiriro ealkaline, uye chiyero che quaternization chinogona kudzorwa nekugadzirisa huwandu hwemethyl chloride.
Iyo yakaguma HPMC yakagezwa, kusefa uye kuomeswa kuti iwane chena, isina-inoyerera poda. Zvimiro zveHPMC, senge viscosity, solubility, uye gel zvivakwa, zvinogona kugadziridzwa nekuchinja dhigirii rekutsiva (DS) yehydroxypropyl uye methyl mapoka.
Kushandiswa kweHPMC
HPMC ine huwandu hwakawanda hwekushandisa mumaindasitiri akasiyana siyana. Mamwe maapplication anozivikanwa anokurukurwa pazasi:
Pharmaceutical industry
HPMC inoshandiswa zvakanyanya muindasitiri yemishonga seyakakora, binder uye firimu rekare. Inoshandiswa mukugadzirwa kwehwendefa kudzora kusunungurwa kwemishonga. HPMC inoita sebhainda nekudzvanya musanganiswa wehupfu kuita fomu yakasimba yedosi. Inovandudzawo kunyungudika uye bioavailability yemishonga isina kunyungudika nekugadzira yakagadzikana uye yakafanana dispersions.
food industry
HPMC inoshandiswa muindasitiri yechikafu semulsifier, thickener uye stabilizer. Inowanzoshandiswa muzvigadzirwa zvekubika, ice cream uye zvigadzirwa zvemukaka. HPMC inovandudza kuumbwa uye kuenderana kwechikafu nekudzivirira kupatsanurwa kwezvinhu uye kuderedza syneresis. Inowedzerawo kuravira uye hupenyu hwesherufu hwezvikafu.
Cosmetics industry
HPMC inoshandiswa muindasitiri yezvizorwa seyakakora uye emulsifier. Inoshandiswa mukugadzirwa kweganda uye bvudzi kuchengetedza senge lotions, makirimu, shampoos uye maconditioner. HPMC inovandudza magadzirirwo uye kuenderana kwezvigadzirwa izvi uye inopa hunyoro uye kugadzirisa mabhenefiti.
indasitiri yekuvaka
HPMC inoshandiswa muindasitiri yekuvaka sekuwedzera kune simende, dhaka uye gypsum. Inovandudza kushanda uye kuchengetwa kwemvura kwezvinhu izvi, nekudaro kuwedzera simba razvo nekugara kwenguva refu. HPMC zvakare inoderedza njodzi yekutsemuka uye shrinkage panguva yekuomesa.
mukupedzisa
Mukupedzisa, HPMC inogoneka uye inoshanda zvakasiyana-siyana polymer ine maapplication mumaindasitiri akasiyana. Iyo inogadzirwa nealkali kurapwa kweselulosi, kuita nepropylene oxide, uye quaternization nemethyl chloride. Izvo zvimiro zveHPMC zvinogona kugadziridzwa nekuchinja dhigirii rekutsiva. HPMC inoita basa rakakosha mumaindasitiri emishonga, chikafu, cosmetic uye kuvaka nekuvandudza magadzirirwo, kuwirirana uye kuita kwezvakasiyana zvigadzirwa. Iyo isiri-chepfu uye biocompatibility inoita kuti ive yakachengeteka uye yakakosha chinhu mumaindasitiri aya.
Nguva yekutumira: Aug-03-2023