{"id":9590,"date":"2022-07-01T00:12:13","date_gmt":"2022-07-01T00:12:13","guid":{"rendered":"https:\/\/oxinshimi.com\/?post_type=product&p=9590"},"modified":"2022-06-27T05:33:12","modified_gmt":"2022-06-27T05:33:12","slug":"hpmc-2","status":"publish","type":"product","link":"https:\/\/oxinshimi.com\/en\/product\/hpmc-2\/","title":{"rendered":"hydroxy propyl methyl cellulose (HPMC)"},"content":{"rendered":"
    \n
  1. What is <\/strong>hydroxypropylmethylcellulose<\/strong>?<\/strong><\/li>\n
  2. Production and synthesis of <\/strong>hydroxypropylmethylcellulose<\/strong><\/li>\n
  3. Application of <\/strong>hydroxypropylmethylcellulose<\/strong><\/li>\n
  4. Dangers of<\/strong> hydroxypropylmethylcellulose<\/strong><\/li>\n
  5. Inquiry about the price and purchase of <\/strong>hydroxypropylmethylcellulose<\/strong><\/li>\n<\/ol>\n

     <\/p>\n

    What is <\/strong>hydroxypropylmethylcellulose<\/strong>?<\/strong><\/h2>\n

    HPMC or hydroxypropylmethylcellulose with experimental formula C8<\/sub>H15<\/sub>O8<\/sub>-(C10<\/sub>H18<\/sub>O6<\/sub>)n<\/sub>-C8<\/sub>H15<\/sub>O8<\/sub> and molecular weight of 240208 g\/mol is a concentrator of the cellulose ether group which is prepared from modified cellulose with alkaline compounds and reacts with methyl chloride and propylene oxide.<\/p>\n

    In this combination, the hydroxyl functional groups have been replaced by one or more of the three hydroxyl groups in the cellulose ring.<\/p>\n

    HPMC has different ratios of hydroxyl group substitution, which affects the degree of organic solubility and thermal gel temperature of aqueous solutions. Hydroxypropylmethylcellulose is a semi-synthetic, load-free and viscoelastic polymer, and in terms of yellow powder, odorless, non-toxic and combustible, water-soluble, biodegradable and biocompatible.<\/p>\n

    In addition, it is soluble in polar organic solvents with high and low temperatures. HPMC has more organo solubility and thermal plasticity than its counterparts such as methylcellulose.<\/p>\n

    It forms the gel by heating to a gelling temperature of 75 to 90 \u00b0C. Hydroxypropylmethylcellulose has a high ability to concentrate and dehydrate the product and is usually added to products to maintain the amount of water in the product and washing purposes.<\/p>\n

     <\/p>\n

    Production and synthesis of <\/strong>hydroxypropylmethylcellulose<\/strong><\/h2>\n

    The process of synthesis of hydroxypropropylmethylcellulose polymer consists of several steps, which are:<\/p>\n

    Alkalinization<\/strong>: The cellulose in wood pulp is modified with a solution of sodium hydroxide in a reactor.<\/p>\n

    Atrification<\/strong>: Methyl chloride compounds followed by propylene oxide are added to the modified cellulose of the previous step to express the methoxy and propylene glycol groups.<\/p>\n

    Neutralization<\/strong>: With the hydrochloric acid solution, the charge of the resulting mixture is neutralized.<\/p>\n

    Purification<\/strong>: The mixture obtained from the previous steps is washed and filtered with hot water in several steps.<\/p>\n

    Drying and size<\/strong>: In this stage, the filtered product is dried from the previous stage and ground to the desired particle size and then packed.<\/p>\n

     <\/p>\n

    Application of <\/strong>hydroxypropylmethylcellulose<\/strong><\/h2>\n

    HPMC has a wide range of applications in pharmaceuticals, paints, cosmetics, adhesives, coatings, agriculture and textiles. Therefore, many industries buy HPMC to produce products. The most important applications of hydroxypropylmethylcellulose are the following:<\/p>\n