Hpmc don shafi fim

Hpmc donFim mai zane shine dabarar samar da fim ɗin bakin ciki na polymer a kan ingantaccen shiri. Misali, abu mai tsayayyen kayan polymer kayan da aka fesa a farfajiya ta hanyar fesa hanyar da yawa Microns Sween, don cimma sakamako da ake so. Samuwar wannan fim a wajen kwamfutar hannu ita ce wannan kwamfutar hannu guda ɗaya tana bin abu guda bayan wucewa ta feshin abu bayan bushewa. Bayan maimaita m da bushewa, an gama rufin har zuwa dukkanin kayan shirye-shiryen an rufe shi gaba daya. Tsarin fim ne ci gaba da fim, kauri mafi yawa tsakanin 8 zuwa 100 microns, wani yanki na elasticity da sassauci, tam a bi farfajiya na zuciyar.

A shekara ta 1954, Abbott ya samar da wani tsari na farko na zanen fim, tun daga lokacin, tare da ci gaba da haɓaka kayan aiki da fasaha, abubuwan samar da fim ɗin an saki kayan aikin polymer. Ba wai kawai iri-iri ba, adadi da ingancin masu launi na launi sun karu da sauri, amma kuma nau'ikan kayan aikin da ke da alaƙa da kayan aikin ƙwayoyin TCM sun ci gaba sosai. Sabili da haka, aikace-aikacen Fasaha na Fim ɗin Tsarin ya zama mai buƙata da haɓaka kasuwancin magunguna don inganta ingancin samfurin.

Amfani da wuri a cikin fim ɗin da ake amfani da kayan aikin fim, har yanzu akwai yawan samfurori da yawa ta amfani da HPMCmethypyl methylcelosekamar yadda membrane kayan. Shine tsarkakewaHpmCSelelulose daga layi na auduga ko katako na itace, da sodium hydroxide bayani don nuna kumburi daga sel na alkiryl don samun sel methylHpmC, samfurin don cire ƙazanta bayan bushewa, murƙushewa, marufi. Gabaɗaya, an yi amfani da hpmc mai ƙarancin ciwon kai azamanfilimAna amfani da shafi kayan, da 2% ~ 10% ana amfani dashi azaman bayani. Rashin kyau shine cewa danko ya yi girma sosai kuma fadada ya yi ƙarfi sosai.

Ƙarni na biyu na fim samar da abu shine polyvinyl barasa (PVA). An kafa polyvinyl ta hanyar safarar polyvinyl acetate. Ba za a iya amfani da rakai na Vinyl maimaitawa a matsayin mai martaba ba saboda ba sa haɗuwa da adadi da tsarkakakke don polymerization. A cikin methanol, ethanol ko ethanol da methyl a methyl aceced bayani tare da alkali karfe ko inorganic acid, hydrolysis yana da sauri.

An yi amfani da PVA sosai a cikin fim ɗin. Domin abin da ke ciki ne a cikin ruwa a zazzabi a ɗakin, ana rufe shi da kusan 20% watsawa. A ruwa tururin da oxygen iko na PVI yana ƙasa da hpmc da EC, don haka ikon hana tururi mai ruwa da oxygen yana da ƙarfi, wanda zai iya kare guntu coore.

Fasterimiaster yana nufin kayan da zai iya ƙara filayen kayan aikin kayan samar da kayan aikin. Wasu fim suna haifar da kayan aikin su bayan an rage yawan zafin jiki, kuma motsi na macromelecteles ya zama karami, don haka rasa sassauya. An kara da filastik na ƙasa don rage zafin jiki na gilashi (tg) da ƙara yawan tsarin sassauci. M amfani amfani da filastik na amorphous tare da manyan nauyin kwayoyin da kuma tabbatacce dangantakar tare da kayan samar da fim. Mai banƙyama mai banƙyama yana taimakawa rage girman ƙarfin, don haka yana ƙara kwanciyar hankali na shirye-shiryen.

An yi imani da gaske cewa tsarin filastik shine cewa kwayoyin keyiryon wuta ana saka su a cikin sarkar polymer, wanda ke toshe ma'amala tsakanin kwayoyin Polymer zuwa babban adadin. Hulɗa da sauƙi lokacin da hulɗa da polymer filastik ya fi ƙarfin polymer-filastik. Don haka, damar ga sassan polymer don motsawa suna ƙaruwa.

Taron na uku na kayan fim shine kayan aikin filastik shine filastik na sinadarai grafted a cikin fim ɗin samar da kayan polymer polymer

Misali, kirkirarren fim ɗin da ke haifar da kayan Kollicoat® Irs shine cewa Cheg ne coad da ke tattare da layin filastik bayan da aka yi