Hydroxypropylmethylcellulose (HPMC) yog ntau yam polymer siv nyob rau hauv ntau yam kev lag luam, nrog rau kev siv tshuaj, kev tsim kho, khoom noj khoom haus, thiab tshuaj pleev ib ce. Ib qho ntawm nws cov kev siv ntau yog nyob rau hauv kev tsim cov khoom gel. Gels yog cov tshuab semisolid nrog cov khoom tshwj xeeb rheological, thiab lawv ...
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