1. Ana wuce cellulose ta hanyar D-glucopyranose β- Wani polymer mai layi wanda aka samar ta hanyar haɗin glycoside bonds 1,4. membrane ɗin cellulose da kansa yana da lu'ulu'u sosai kuma ba za a iya haɗa shi da ruwa ko a samar da shi zuwa membrane ba, don haka dole ne a gyara shi ta hanyar sinadarai. Hydroxil kyauta a matsayin C-2, C-3 da C-6 yana ba shi aikin sinadarai kuma ana iya haɗa shi da oxidized reaction, etherification, esterification da graft copolymerization. Ana iya inganta narkewar cellulose da aka gyara kuma yana da kyakkyawan aikin samar da fim.
2. A shekarar 1908, masanin kimiyyar sinadarai na ƙasar Switzerland Jacques Brandenberg ya shirya fim ɗin cellulose na farko, wanda ya fara haɓaka kayan marufi masu laushi na zamani. Tun daga shekarun 1980, mutane sun fara nazarin cellulose da aka gyara a matsayin fim da shafi mai ci. Membrane na cellulose da aka gyara wani abu ne da aka yi daga abubuwan da aka samo bayan gyaran sinadarai na cellulose. Wannan nau'in membrane yana da ƙarfin tauri, sassauci, bayyanawa, juriyar mai, rashin ƙamshi da ɗanɗano, matsakaicin ruwa da juriyar iskar oxygen.
3. Ana amfani da CMC a cikin abincin soyayye, kamar soyayyen dankalin turawa, don rage shan mai. Idan aka yi amfani da shi tare da sinadarin calcium chloride, tasirinsa ya fi kyau. Ana amfani da HPMC da MC sosai a cikin abincin da aka yi wa zafi, musamman a cikin abincin soyayye, saboda gels ne na zafi. A Afirka, ana amfani da MC, HPMC, furotin masara da amylose don toshe mai da ake ci a cikin abincin da aka soya da wake mai ja, kamar fesawa da tsoma waɗannan maganin a kan ƙwallon wake ja don shirya fina-finan da za a ci. Kayan membrane na MC da aka tsoma shine mafi inganci a cikin shingen mai, wanda zai iya rage shan mai da kashi 49%. Gabaɗaya, samfuran da aka tsoma suna nuna ƙarancin shan mai fiye da waɗanda aka fesa.
4. MCAna kuma amfani da HPMC a cikin samfuran sitaci kamar ƙwallon dankali, batter, dankalin turawa da kullu don inganta aikin shinge, yawanci ta hanyar fesawa. Binciken ya nuna cewa MC yana da mafi kyawun aikin toshe danshi da mai. Ikon riƙe ruwa ya fi yawa saboda ƙarancin hydrophilicity. Ta hanyar na'urar hangen nesa, ana iya ganin cewa fim ɗin MC yana da kyakkyawan mannewa ga abincin soyayye. Nazarin ya nuna cewa murfin HPMC da aka fesa akan ƙwallon kaza yana da kyakkyawan riƙe ruwa kuma yana iya rage yawan mai sosai yayin soya. Ana iya ƙara yawan ruwan samfurin ƙarshe da kashi 16.4%, za a iya rage yawan mai da kashi 17.9%, kuma za a iya rage yawan mai da ke ciki da kashi 33.7%. Aikin man shingen yana da alaƙa da aikin gel na zafi naHPMCA matakin farko na gel ɗin, ɗanko yana ƙaruwa da sauri, ɗaurewar intermolecular yana faruwa da sauri, kuma gels ɗin maganin yana faruwa a zafin 50-90 ℃. Layer ɗin gel ɗin zai iya hana ƙaura ruwa da mai yayin soya. Ƙara hydrogel a cikin layin waje na yankakken kaza da aka soya a cikin ɓawon burodi na iya rage matsalar tsarin shiryawa, kuma yana iya rage shan mai na ƙirjin kaji sosai da kuma kiyaye halayen jin daɗin samfurin.
5. Duk da cewa HPMC kayan fim ne mai kyau wanda ake iya ci, wanda ke da kyawawan halaye na injiniya da juriya ga tururin ruwa, amma ba shi da kasuwa sosai. Akwai abubuwa biyu da ke takaita amfani da shi: na farko, gel ne mai zafi, wato, gel mai kama da viscoelastic wanda aka samar a babban zafin jiki, amma yana wanzuwa a cikin maganin da ke da ƙarancin danko a zafin jiki na ɗaki. Sakamakon haka, dole ne a sanya matrix a cikin wuta a busar da shi a babban zafin jiki yayin shirye-shiryen. In ba haka ba, a cikin tsarin shafa, fesawa ko tsomawa, maganin yana da sauƙin gudana, yana samar da kayan fim marasa daidaito, yana shafar aikin fina-finan da ake ci. Bugu da ƙari, wannan aikin ya kamata ya tabbatar da cewa an kiyaye dukkan wurin samar da kayan a sama da digiri 70, yana ɓatar da zafi mai yawa. Saboda haka, ya zama dole a rage zafin gel ɗinsa ko ƙara danko a ƙananan zafin jiki. Na biyu, yana da tsada sosai, kimanin yuan 100000/ton.
Lokacin Saƙo: Afrilu-26-2024