Villanueva Gallegos, Valentín
(Universidad Michoacana de San Nicolás de Hidalgo, 2019-11)
Hydroxypropylmethylcellulose (HPMC) is a non-ionic polymer, semisynthetic derivative of cellulose, which is obtained by reaction of cellulose alkali with a mixture of methylene chloride and propylene oxide [1], methylcellulose ...