Umehluko phakathi kwe-hydroxypropylyl starch ether ne-cellulose ether

Manje abantu abaningi asazi okuningi nge-hydroxypropylylylyl ether. Bacabanga ukuthi kunomehluko omncane phakathi kwe-hydroxyproppropyl starch ether kanye nesitashi esijwayelekile, kepha akunjalo. Inani le-hydroxypropyllopyllopylyl ether elisetshenziswa emikhiqizweni yodaka lincane kakhulu, futhi inani lokungezwa le-polar lingafinyelela imiphumela yekhwalithi enhle.

I-Hydroxypropylyly starch ether (HPS) iyimpuphu emhlophe etholwa ngokulungisa izitshalo zemvelo, ingenele kakhulu, bese ifaka i-fafaza, ngaphandle kwezosiko. Ihluke ngokuphelele kwisitashi esijwayelekile noma isitashi esiguquliwe.

Kanye ne-hydroxypropylm methyl cellulose, eyaziwa nangokuthi i-hypromellose, i-hydroxypropyl methyl red vithamini ether, ukusebenzisa kakhulu ukotini njenge-35- 40 ° C. Ubudala kahle ku-35 ° C, ukuze isilinganiso esiphakathi se-polymerization ye-Alkali fiber etholakele ngaphakathi kwebanga elidingekayo. Beka i-alkali fiber ku-kettle yokuthethelwa, engeza i-propelene oxide kanye ne-methyl chloride ngokulandelana, futhi ungene ku-50-80 ° C amahora angama-5, futhi ingcindezi ephezulu imayelana ne-1.8MPA. Ngemuva kwalokho engeza inani elifanele le-hydrochloric acid kanye ne-acid elishisayo emanzini ashisayo ku-90 ° C ukugeza impahla ukwandisa ivolumu, bese uyicwilisa nge-centrifuge, bese ekugcineni uyihlanze kaninginingi ekungathathi hlangothi. Kusetshenziswa kabanzi ekwakheni, embonini yamakhemikhali, upende, umuthi, embonini yezempi kanye nezinye izinkambu, ngokulandelana njenge-ejenti eyakha ifilimu, i-binder, i-stabilizer, termilizer, njll.

I-Hydroxypropylyl ether starch ether ingasetshenziswa njengomphikisi wemikhiqizo esekwe kore, imikhiqizo esekwe e-gypsum kanye nemikhiqizo ye-lime calcium. Inokuhambisana okuhle namanye ama-admixtures wokwakha. Isetshenziswe kanye ne-hydroxypropyll methylcellose ether hpmc, kunganciphisa umthamo we-hydroxypropyllylylylylylylylylylyll methylcellulose (ngokuvamile u-0.05% we-HPS kunganciphisa umthamo we-HPMC cishe nge-20% -30%)), futhi ungadlala umphumela wokuqina Isakhiwo, ngokumelana kangcono nokuqhekeka okungcono nokusebenza okuthuthukile.