Hydroxypropyl methylcellulose ke eng?

1. Selelekela

Hydroxypropyl methylcellulose (HPMC) ke polima e qhibilihang ka metsing e sebelisoang haholo ho tsoa ho selulose. Ke phofo e se nang ionic, e sa nkheng, e sa latsoeheng, e tšoeu ho isa ho e tšoeu e sebelisoang haholo indastering ea lijo, ea meriana le ea litlolo. HPMC na le mefuta e fapaneng ya ditshebediso, ho akarelletsa le thickening, emulsifying, suspending, stabilizing, le filimi-forming. E boetse e sebelisoa e le sekontiri, setlolo, le sehlaseli ha ho etsoa matlapa le li-capsules.

2. Lisebelisoa tse tala

Lisebelisoa tse tala tse sebelisoang ho hlahisa HPMC ke cellulose, e leng polysaccharide e entsoeng ka likarolo tsa tsoekere. Cellulose e ka fumanoa mehloling e fapaneng, ho kenyelletsa le makhasi a lehong, k'hothone le likhoele tse ling tsa semela. Joale cellulose e phekoloa ka mokhoa oa lik'hemik'hale ho hlahisa hydroxypropyl methylcellulose.

3. Mokhoa oa Tlhahiso

Ts'ebetso ea tlhahiso ea HPMC e kenyelletsa mehato e mengata. Ntlha ea pele, selulose e phekoloa ka alkali, e kang sodium hydroxide, ho etsa selulose ea alkali. Selulose sena sa alkali se sebetsa ka methyl chloride le propylene oxide ho etsa hydroxypropyl methylcellulose. Joale hydroxypropyl methylcellulose e hloekisoa ebe e omisoa ho etsa phofo e tšoeu.

4. Taolo ea Boleng

Taolo ea boleng ke karolo ea bohlokoa ea ts'ebetso ea tlhahiso ea HPMC. Boleng ba sehlahisoa bo khethoa ke ho hloeka ha selulose, tekanyo ea ho fetola sehlopha sa hydroxypropyl, le tekanyo ea ho kenya sebaka sa sehlopha sa methyl. Ho hloeka ha selulose ho khethoa ka ho hlahloba viscosity ea tharollo, ha tekanyo ea ho fetola e khethoa ka ho hlahloba tekanyo ea hydrolysis ea hydroxypropyl methylcellulose.

5. Sephutheloana

HPMC hangata e kenngoa ka mekotleng kapa meqomong. Hangata mekotla e entsoe ka polyethylene kapa polypropylene, athe meropa hangata e entsoe ka tšepe kapa polasetiki. Lisebelisoa tsa ho paka li lokela ho khethoa ho netefatsa hore sehlahisoa se sirelelitsoe mongobo le lintho tse ling tsa tikoloho.

6. Polokelo

HPMC e lokela ho bolokoa sebakeng se phodileng, se omileng, hole le khanya ea letsatsi le mehloli e meng ea mocheso. Sehlahisoa se boetse se lokela ho sireletsoa ho tloha mongobo le linthong tse ling tsa tikoloho.

7. Qetello

HPMC ke polima e qhibilihang ka metsing e sebelisoang haholo ho tsoa ho selulose. E sebelisoa liindastering tse fapaneng, ho kenyelletsa le indasteri ea lijo, ea meriana le ea litlolo. Ts'ebetso ea tlhahiso ea HPMC e kenyelletsa mehato e 'maloa, ho kenyelletsa kalafo ea selulose ka alkali, karabelo ea selulose ea alkali ka methyl chloride le propylene oxide, le tlhoekiso le ho omisoa ha hydroxypropyl methylcellulose. Taolo ea boleng ke karolo ea bohlokoa ea ts'ebetso ea tlhahiso, 'me sehlahisoa se lokela ho bolokoa sebakeng se phodileng, se omileng, hole le khanya ea letsatsi le mehloli e meng ea mocheso.