Hydroxypropylmethylcellulose ndi Surface treatment HPMC

Hydroxypropylmethylcellulose(HPMC) ndi polima yopangidwa ndi cellulose yomwe imagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala, chakudya, ndi zodzikongoletsera. Ndi ufa woyera kapena wonyezimira womwe umasungunuka m'madzi ndipo umapanga yankho lomveka bwino, lowoneka bwino. HPMC imagwiritsidwa ntchito ngati thickener, emulsifier, ndi stabilizer muzinthu zosiyanasiyana. Amagwiritsidwanso ntchito ngati ❖ kuyanika kwa mapiritsi ndi makapisozi.

Chithandizo chapamwamba cha HPMC chimaphatikizapo kusintha mawonekedwe a polima kuti apititse patsogolo magwiridwe antchito ake. Chithandizo chapamwamba chimatha kuwongolera kumamatira, kunyowetsa, ndi kufalikira kwa HPMC. Ikhozanso kupititsa patsogolo kuyanjana kwa HPMC ndi zosakaniza zina mukupanga.

Njira zina zodziwika bwino zochizira HPMC ndi izi:

1. Etherification: Izi zimaphatikizapo kuchitapo kanthu ndi HPMC ndi alkylating agent kuti adziwe magulu owonjezera a hydrophobic pamwamba pa polima.

2. Kuphatikizana: Izi zimaphatikizapo kuyambitsa maulalo pakati pa mamolekyu a HPMC kuti awonjezere mphamvu ndi kukhazikika kwa polima.

3. Acetylation: Izi zimaphatikizapo kuyambitsa magulu a acetyl pamwamba pa HPMC kuti awonjezere kusungunuka ndi kukhazikika kwake.

4. Sulfonination: Izi zimaphatikizapo kuyambitsa magulu a sulfonic acid pamwamba pa HPMC kuti madzi ake asungunuke komanso kuti asawonongeke.

Ponseponse, chithandizo chapamwamba cha HPMC chimatha kusintha magwiridwe antchito ake ndikupangitsa kuti ikhale yoyenera pakugwiritsa ntchito zosiyanasiyana.