Itandukaniro riri hagati ya hydroxypropyl starch ether na selulose ether

Ubu abantu benshi ntibazi byinshi kuri hydroxypropyl starch ether. Batekereza ko hari itandukaniro rito hagati ya hydroxypropyl krahisi ether na krahisi isanzwe, ariko sibyo. Ingano ya hydroxypropyl starch ether ikoreshwa mubicuruzwa bya minisiteri ni nto cyane, kandi umubare wongeyeho polar urashobora kugera ku ngaruka nziza.

Hydroxypropyl krahisi ether (HPS) ni ifu yera yera iboneka muguhindura ibimera karemano, etherifike cyane, hanyuma igatera-yumye, idafite plastike. Iratandukanye rwose na krahisi isanzwe cyangwa yahinduwe.

Na hydroxypropyl methyl selulose, izwi kandi nka hypromellose, hydroxypropyl methyl vitamine ether itukura, ni ugukoresha selile nziza cyane ya selile nkibikoresho fatizo, hanyuma ukayivura na lye kuri 35-40 ° C mugihe cyigice cyisaha, Kunyunyuza, kumenagura selile, na imyaka neza kuri 35 ° C, kuburyo impuzandengo ya polymerisation ya fibre ya alkali yabonetse iri murwego rusabwa. Shira fibre ya alkali mumasafuriya ya etherification, ongeramo okiside ya propylene na methyl chloride ikurikiranye, hanyuma uyitere kuri 50-80 ° C mumasaha 5, kandi umuvuduko ntarengwa ni 1.8MPa. Noneho shyiramo urugero rwa acide hydrochloric na aside ya oxyde mumazi ashyushye kuri 90 ° C kugirango ukarabe ibikoresho kugirango wongere amajwi, hanyuma ubishiremo umwuma hamwe na centrifuge, hanyuma ubyoze inshuro nyinshi kugirango utabogamye. Byakoreshejwe cyane mubwubatsi, inganda zimiti, amarangi, ubuvuzi, inganda za gisirikare nizindi nzego, nkibikorwa byo gukora firime, guhuza, gutatanya, stabilisateur, kubyimba, nibindi.

Hydroxypropyl krahisi ether irashobora gukoreshwa nkimvange yibicuruzwa bishingiye kuri sima, ibicuruzwa bishingiye kuri gypsumu nibicuruzwa bya calcium. Ifite guhuza neza nizindi nyubako zubaka. Ikoreshejwe hamwe na hydroxypropyl methylcellulose ether HPMC, irashobora kugabanya urugero rwa hydroxypropyl methylcellulose (muri rusange wongeyeho 0,05% ya HPS irashobora kugabanya urugero rwa HPMC hafi 20% -30%)), kandi irashobora kugira ingaruka yibyibushye, kugirango iteze imbere imbere imiterere, hamwe no guhangana neza no kunoza imikorere.