Tushen abu na hana ruwa da kumakwali mai hana mai Ana amfani da kwantena na kayan abinci da ake ɗauka da bleached na sinadari ta hanyar tsari na musamman, sannan a bushe bayan girman saman. Ko da yake saman Layer yana da girma, an rage rashin ƙarfi, amma zaruruwa a saman takarda har yanzu suna nunawa ga yawancin nau'in hydroxyl na polar polar tare da hydrophilicity mai karfi, babban karfin iska na takarda da kuma abin mamaki na capillary. da zaruruwa, sakamakon ruwa da man fetur infiltration har yanzu yana da kyau.
Kwali sau da yawa yana ɗaukar hanyar ƙarawa a cikin ɓangaren litattafan almara ko gyare-gyaren saman don ba takarda kaddarorin musamman kamar su ruwa mai hana ruwa, mai hana ruwa da ƙwayoyin cuta. Ana iya yin gyaran fuska ta hanyar shafa. Bayan bushewa, an kafa fim ɗin da ke da manyan kaddarorin katanga don haɓaka abubuwan hana ruwa da man fetur na takarda; rage yawan makamashi na sararin samaniya zai iya inganta kayan anti-wetting na substrate; shiryatakarda mai rufitare da wani abin shamaki, Ta hanyar haɓaka ƙaƙƙarfan yanayin sa, ana iya samun tasirin superhydrophobic da superoleophobic.
Wasu ƙungiyoyin aiki na chitosan ana maye gurbinsu da ƙungiyoyin carboxymethyl don samar da carboxymethyl chitosan (CMCS), kuma sarkar kwayoyin tana da adadi mai yawa na ƙungiyoyin ayyuka na hydroxyl, amino da carboxymethyl, waɗanda ke ƙara haɓaka solubility na ruwa da abubuwan ƙirƙirar fim na CMCS. Ƙungiyar hydroxyl a kan CMCS tana da polarity mai ƙarfi kuma tana da ƙayyadaddun ƙwayar mai, yayin da ƙungiyar amino tana da cajin gaske, wanda zai shayar da kwayoyin mai kuma ya hana kwayoyin mai daga shiga da kuma jika takarda.
Polylactic acid (PLA) yana daya daga cikin wuraren da ake gudanar da bincike kan abubuwan da ba a iya lalacewa a duniya, wanda ke magance matsalar da sharar gida ke da wuyar lalacewa bayan amfani da sinadarai na tushen man fetur. Kwayoyin PLA suna haɗuwa tare ta hanyar esterification, kuma ƙungiyar masu aiki suna da ɗanɗano lipophilic, amma ƙungiyar ester tana da kyakkyawan hydrophobicity, don haka ana iya amfani da PLA azaman kayan hydrophobic.
CMCS yana da ingantaccen mai mai amma mai ƙarfi mai ƙarfi, yayin da PLA ba shi da narkewa a cikin ruwa, kuma bakin bakin ciki da aka kafa bayan murfin yana da tasirin hydrophobic, amma ƙungiyoyin aiki akan sarkar kwayoyin suna da takamaiman lipophilicity. Rabo tsakanin su biyu yana da mahimmanci musamman don haɓaka juriya na ruwa da maitakeaway kayan abinci.
Lokacin aikawa: Nov-14-2022