Polyanionic cellulose (PAC) wani sinadari ne wanda aka gyara daga cellulose, wanda shine polysaccharide da ke faruwa a zahiri da ake samu a bangon tantanin halitta. Ana amfani da PAC a masana'antu daban-daban, ciki har da hako mai, sarrafa abinci, magunguna, da kayan kwalliya, saboda abubuwan sinadarai na musamman. Abubuwan sinadaransa, tsarinsa, da kaddarorinsa sun sanya shi zama mahimmin ƙari a aikace-aikace da yawa.
Tsarin Cellulose:
Cellulose shine polysaccharide madaidaiciya wanda ya ƙunshi maimaita raka'a na ƙwayoyin β-D-glucose waɗanda ke haɗe da β(1→4) glycosidic bonds. Kowace rukunin glucose ya ƙunshi ƙungiyoyin hydroxyl (-OH), waɗanda ke da mahimmanci don gyare-gyaren sinadarai.
Gyaran Sinadari:
Polyanionic cellulose yana samuwa ta hanyar gyaran sinadarai na cellulose. Tsarin gyare-gyaren ya ƙunshi gabatarwar ƙungiyoyin anionic akan kashin baya na cellulose, yana ba da shi tare da takamaiman kaddarorin. Hanyoyin gama gari don gyaggyarawa cellulose sun haɗa da etherification da halayen esterification.
Ƙungiyoyin Anionic:
Ƙungiyoyin anionic da aka ƙara zuwa cellulose yayin gyare-gyare suna ba da kaddarorin polyanionic zuwa sakamakon polymer. Waɗannan ƙungiyoyin na iya haɗawa da ƙungiyoyin carboxylate (-COO⁻), sulfate (-OSO₃⁻), ko phosphate (-OPO₃⁻). Zaɓin ƙungiyar anionic ya dogara da abubuwan da ake so da aikace-aikacen da aka yi niyya na cellulose na polyanionic.
Haɗin Kemikal na PAC:
Abubuwan sinadaran polyanionic cellulose sun bambanta dangane da takamaiman hanyar haɗawa da aikace-aikacen da aka yi niyya. Koyaya, gabaɗaya, PAC ya ƙunshi da farko na kashin bayan cellulose tare da ƙungiyoyin anionic da ke haɗe da shi. Matsayin maye gurbin (DS), wanda ke nufin matsakaicin adadin ƙungiyoyin anionic a kowace naúrar glucose, na iya bambanta kuma yana tasiri sosai ga kaddarorin PAC.
Misali Tsarin Sinadari:
Misali na tsarin sinadaran polyanionic cellulose tare da kungiyoyin carboxylate shine kamar haka:
Tsarin Cellulose na Polyanionic
A cikin wannan tsari, shuɗin da'irar suna wakiltar raka'o'in glucose na kashin bayan cellulose, kuma jajayen da'irar suna wakiltar ƙungiyoyin carboxylate anionic (-COO⁻) waɗanda ke haɗe zuwa wasu sassan glucose.
Kaddarori:
Polyanionic cellulose yana nuna kyawawan kaddarorin, gami da:
Gyaran Rheology: Yana iya sarrafa danko da asarar ruwa a aikace-aikace daban-daban, kamar hakowa a cikin masana'antar mai.
Riƙewar ruwa: PAC na iya ɗauka da riƙe ruwa, yana mai da shi amfani a cikin samfuran da ke buƙatar sarrafa danshi, kamar samfuran abinci ko ƙirar magunguna.
Kwanciyar hankali: Yana haɓaka kwanciyar hankali da aiki a cikin ƙira daban-daban ta hana rabuwar lokaci ko tarawa.
Biocompatibility: A cikin aikace-aikace da yawa, PAC ya dace kuma ba mai guba ba, yana mai da shi dacewa don amfani a cikin magunguna da samfuran abinci.
Aikace-aikace:
Polyanionic cellulose yana samun aikace-aikace a cikin masana'antu daban-daban:
Ruwan hako mai: PAC shine maɓalli mai mahimmanci a hako laka don sarrafa danko, asarar ruwa, da hana shale.
sarrafa abinci: Ana amfani da shi azaman mai kauri, mai daidaitawa, ko wakili mai riƙe ruwa a cikin kayan abinci kamar miya, riguna, da abubuwan sha.
Pharmaceuticals: PAC tana aiki azaman mai ɗaure, rarrabuwa, ko ɗanƙoƙi mai gyarawa a cikin ƙirar kwamfutar hannu, dakatarwa, da man shafawa.
Kayan shafawa: Ana amfani da shi a cikin samfuran kulawa na sirri kamar su creams, lotions, da shampoos don samar da sarrafa danko da kwanciyar hankali.
Kerawa:
Tsarin masana'anta na cellulose polyanionic ya ƙunshi matakai da yawa:
Samuwar Cellulose: Ana samun Cellulose daga ɓangaren litattafan almara ko auduga.
Gyaran sinadarai: Cellulose yana fuskantar etherification ko esterification halayen don gabatar da ƙungiyoyin anionic akan raka'a glucose.
Tsarkakewa: An tsarkake cellulose da aka gyara don cire ƙazanta da samfurori.
bushewa da marufi: Tsaftataccen cellulose na polyanionic an bushe kuma an tattara shi don rarrabawa ga masana'antu daban-daban.
polyanionic cellulose wani sinadari ne wanda aka gyaggyarawa na cellulose tare da ƙungiyoyin anionic da ke haɗe da kashin bayan cellulose. Abubuwan sinadaransa, gami da nau'in da yawa na ƙungiyoyin anionic, yana ƙayyade kaddarorinsa da dacewa don aikace-aikace daban-daban a masana'antu kamar hakar mai, sarrafa abinci, magunguna, da kayan kwalliya. Ta hanyar madaidaicin sarrafa kira da ƙira, polyanionic cellulose ya ci gaba da zama ƙari mai mahimmanci a cikin samfura da matakai da yawa a duk duniya.
Lokacin aikawa: Afrilu-11-2024