Yakaderera-inotsiva hydroxypropyl cellulose (L-HPC) inotorwa kubva kune cellulose, yakasikwa polymer inowanikwa muchirimwa sero madziro.L-HPC yakagadziridzwa kuti iwedzere kunyungudika kwayo uye zvimwe zvivakwa, ichiita kuti ive chinhu chinogoneka chine akawanda maapplication mumaindasitiri emishonga, chikafu, uye cosmetic.
Low-substituted hydroxypropylcellulose (L-HPC) ishoma-inotsiva cellulose derivative yakagadziridzwa zvakanyanya kuti ivandudze kunyungudika kwayo mumvura uye zvimwe zvinonyungudutsa.Cellulose iine mutsara polysaccharide inoumbwa neglucose mayunitsi iyo yakawanda muzvisikwa uye inhengo yezvimiro zvechirimwa masero madziro.L-HPC inogadzirwa nekemikari inogadzirisa cellulose, ichiunza hydroxypropyl mapoka kuti iwedzere kunyungudika kwayo ichichengeta zvimwe zvezvinhu zvinodikanwa zveselulosi.
Kemikari chimiro chepasi-inotsiva hydroxypropyl cellulose
Chimiro chemakemikari cheL-HPC chinosanganisira cellulose musana uye hydroxypropyl boka rinosungirirwa kune hydroxyl (OH) boka reglucose unit.Iyo dhigirii yekutsiva (DS) inoreva huwandu hweavhareji yemapoka ehydroxypropyl pachikamu cheglucose mucheni ye cellulose.MuL-HPC, iyo DS inochengetwa yakaderera nemaune kuti ienzanise yakagadziridzwa kunyungudika nekuchengetedza iyo mukati meiyo cellulose.
Synthesis yepasi-inotsiva hydroxypropyl cellulose
Iyo synthesis yeL-HPC inosanganisira kuita kwe cellulose nepropylene oxide pamberi peiyo alkaline catalyst.Kuita uku kunoguma nekupinzwa kwemapoka ehydroxypropyl mumaketani ecellulose.Kunyatsodzora kwemamiriro ekuita, kusanganisira tembiricha, nguva yekuita, uye catalyst concentration, yakakosha kuti uwane dhigirii yaunoda yekutsiva.
Zvinhu zvinokanganisa solubility
1. Dhigirii rekutsinhanisa (DS):
Iyo solubility yeL-HPC inobatwa neiyo DS yayo.Sezvo DS inowedzera, iyo hydrophilicity yeboka re hydroxypropyl inova yakanyatsojeka, nekudaro inovandudza kunyungudika mumvura uye polar solvents.
2. Huremu hweMolecular:
Iyo molecular huremu hweL-HPC chimwe chinhu chakakosha.Yakakwira molecular uremu L-HPC inogona kuratidza yakaderedzwa solubility nekuda kwekuwedzera intermolecular kupindirana uye ketani entanglements.
3. Tembiricha:
Solubility inowanzo wedzera tembiricha nekuti tembiricha yepamusoro inopa simba rakawanda rekupwanya masimba epakati uye kukurudzira kupindirana kwepolymer-solvent.
4. pH kukosha kwemhinduro:
Iyo pH yemhinduro inokanganisa ionization yemapoka ehydroxypropyl.Mune zvimwe zviitiko, kugadzirisa pH kunogona kuwedzera kunyungudika kweL-HPC.
5. Solvent type:
L-HPC inoratidzira yakanaka solubility mumvura uye akasiyana polar solvents.Sarudzo yekunyungudutsa inotsamira pane chaiyo application uye inodiwa zvinhu zvechigadzirwa chekupedzisira.
Kushandiswa kweyakaderera inotsiva hydroxypropyl cellulose
1. Zvinodhaka:
L-HPC inoshandiswa zvakanyanya muindasitiri yemishonga sebhainda, disintegrant uye inodzorwa kuburitsa mumiriri mukuumbwa kwehwendefa.Kunyungudika kwayo mumvura yemudumbu inoita kuti ive yakakodzera kushandiswa kwekushandisa zvinodhaka.
2. Indasitiri yezvekudya:
Muindasitiri yezvekudya, L-HPC inoshandiswa seyakakora uye inodzikamisa muzvigadzirwa zvakasiyana.Kukwanisa kwayo kuumba gel rakajeka pasina kukanganisa kuravira kana ruvara rwezvigadzirwa zvekudya zvinoita kuti zvive zvakakosha mukugadzirwa kwezvokudya.
3. Zvekuzora:
L-HPC inoshandiswa mukugadzirwa kwezvizoro zvekugadzira firimu uye kukora zvivakwa.Inobatsira kuvandudza kugadzikana uye kuumbwa kwezvizoro zvakadai semafuta, lotions uye gels.
4. Coating application:
L-HPC inogona kushandiswa senge firimu rekupfekedza zvinhu mumaindasitiri emishonga uye ezvekudya kuti ipe dhizaini yekudzivirira yemapiritsi kana confectionery zvigadzirwa.
Yakaderera-inotsiva hydroxypropyl cellulose i polymer inoshanda yakawanda ine yakawedzeredzwa solubility inotorwa kubva kune yakasikwa cellulose inowanikwa muzvirimwa.Hunhu hwayo hwakasiyana hunoita kuti ive yakakosha mumaindasitiri akasiyana siyana anosanganisira emishonga, chikafu uye zvekuzora.Kunzwisisa zvinhu zvinopesvedzera kunyungudika kwayo kwakakosha pakugadzirisa kushandiswa kwayo mumashandisirwo akasiyana.Sezvo tsvakiridzo yesainzi yepolymer uye budiriro ichienderera mberi, L-HPC uye zvakafanana zvinobva kune cellulose zvinogona kuwana zvitsva uye zvitsva zvekushandisa mundima dzakasiyana.
Nguva yekutumira: Zvita-26-2023