I-HPMC, eyaziwa nangokuthi yi-hydroxypropyllylyly, is a polymer ancibilike amanzi esetshenziswa kabanzi kwizimboni zezimonyo, ezenzakaqeka kanye nokudla. I-polymer isuselwa ku-cellulose, into yemvelo etholakala ezitshalweni. I-HPMC iyisikhulu esihle kakhulu esisetshenziselwa ukukhulisa i-viscosity yezixazululo ezahlukahlukene. Amandla awo okukhiqiza ama-gels we-Thixotropic futhi enza kube ukukhetha okuthandwayo kuzicelo eziningi.
Izakhiwo ezijikelezayo ze-HPMC
Izakhiwo ezikhulisa ze-HPMC zaziwa kahle embonini. I-HPMC ingakhuphula i-viscosity yesisombululo ngokwakha inethiwekhi yejeli edonsa ama-molecule wamanzi. Izinhlayiya ze-HPMC zakha inethiwekhi ye-gel lapho i-hydrate emanzini futhi ihehe ngomunye ngama-hydrogen bond. Inethiwekhi yakha i-matrix enezici ezintathu ekhulisa ukubonakala kwesixazululo.
Enye yezinzuzo eziphambili zokusebenzisa i-HPMC njengomuntu omkhulu ukuthi ingakhula isixazululo ngaphandle kokuthinta ukucaca noma umbala wayo. I-HPMC iyi-polymer engeyona eye-ionic, okusho ukuthi ayidlulisi noma yiliphi icala kwikhambi. Lokhu kwenza kube nento elungele ukusetshenziswa ekwakhiweni okucacile noma okusobala.
Enye inzuzo ye-HPMC ukuthi ingakhula izixazululo ngokugxila okuphansi. Lokhu kusho ukuthi kuphela inani elincane le-HPMC elidingekayo ukuze kufezekiswe i-viscosity oyifunayo. Lokhu kungagcina izindleko zabakhiqizi futhi kunikeze amakhasimende ngemikhiqizo eminingi yezomnotho.
Thixotropy we-HPMC
I-Thixotropy yimpahla yezinto ezibonakalayo ukwehla ekuboneni kwe-viscosity lapho uvinjelwe ukucindezelwa kanye nokubuyela ekubonakaleni kwayo kwasekuqaleni lapho izingcindezi zisuswa. I-HPMC iyinto ebonakalayo ye-thixotropic, okusho ukuthi isakazeka noma ithulule kalula ngaphansi kwengcindezi ye-shear. Kodwa-ke, uma ukucindezelwa sekususiwe, ibuyela ekunamathekeni futhi iphinde ibe khona.
Izakhiwo zeThixotropic ze-HPMC zenza ilungele izinhlelo eziningi. Isibonelo, isetshenziswa kakhulu ngopende, njengejazi eliwugqinsi ebusweni. Izakhiwo ze-Thixotropic ze-HPMC ziqinisekisa ukuthi ukuhlanganiswa kuhlala kukhona ngaphandle kokugijima noma ukugijima. I-HPMC nayo isetshenziswa embonini yokudla njengomuntu omkhulu wesoso kanye nokugqoka. Izakhiwo ze-Thixotropic ze-HPMC ziqinisekisa ukuthi amasoso noma ukugqoka akuhlambi kusuka ezinambuzane noma amapuleti, kodwa esikhundleni salokho kuhlale kukhulu futhi kungaguquki.
I-HPMC iyi-polymer eguquguqukayo enezicelo eziningi ezimbonini ezahlukahlukene. Izakhiwo zayo zokuqina kanye nezakhiwo ze-thixotropic zenza zilungele ukwakhiwa kwezimonyo, ezenza imithi kanye nokudla. I-HPMC iyisikhulu esihle kakhulu, yandisa i-viscosity yesisombululo ngaphandle kokuthinta ukucaca kwayo noma umbala wayo. Izakhiwo zayo ze-Thixotropic ziqinisekisa ukuthi isixazululo asimi kakhulu noma sibe mncane kakhulu, kuya ngohlelo lokusebenza. I-HPMC isithako esibalulekile emikhiqizweni eminingi, futhi izinzuzo zawo eziningi zikwenza kube ukukhetha okuthandwa ngabakhiqizi namakhasimende.
Isikhathi sePosi: Aug-25-2023