I-Hydroxyethyl cellulose (HEC)ihlala incibilika kakhulu emanzini ebangeni elibanzi lokushisa, ngisho nasezindaweni ezishisa kakhulu lapho amanye ama-non-ionic chemically modified cellulose ethers afana ne-methyl cellulose (MC) kanye ne-hydroxypropyl methyl cellulose (HpMC) ekhombisa amaphuzu okuguquka. Ukuze kucaciswe imbangela yokuncibilika okuphezulu kwe-HEC, ukuncika kokushisa kokwakheka kwamanzi i-nH ngayinye yeyunithi ye-glucopyran kumasampula e-HEC kuhlolwe emazingeni okushisa alandelayo kusukela ku-10 kuya ku-70 °C kusetshenziswa izilinganiso ze-dielectric spectrum eziphezulu kakhulu ezifika ku-50 GHz.
Kulolu cwaningo, amasampula e-HEC ahlolwe ngenani le-molar lama-hydroxyethyl substitutions (MS) leyunithi ngayinye ye-glucose pyran esukela ku-1.3 kuya ku-3.6. Wonke amasampula e-HEC ancibilikiswa emanzini ngaphakathi kobubanzi bokushisa obuhloliwe futhi awazange abonise amaphuzu okugcwala. Inani le-nH lamasampula e-HEC ane-MS 1.3 lingu-14 ku-20 °C, futhi lehla kancane lapho izinga lokushisa likhuphuka, futhi lehla laya ku-10 ku-70 °C. Inani le-PH lesampula ye-HEC ngokusobala likhulu kunenani elincane le-nH elibalulekile elingaba ngu-5 Cellulose ethers njenge-MC ne-HpMC kumele zincibilikiswe emanzini, ngisho nasebangeni lokushisa eliphezulu.
Nokho, ama-molecule e-HEC ayancibilika emanzini ebangeni elibanzi lokushisa. Ukuxhomekeka kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds ayimodeli e-HEC substituents) kuncane futhi kuyafana. Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu amaqembu awo ashintshiwe. I-3 ingu-14 ku-20 °C, yehla kancane njengoba izinga lokushisa likhuphuka, futhi yehla iye ku-10 ku-70 °C. Inani le-nH lesampula ye-HEC ngokusobala likhulu kunenani eliphansi le-nH elibalulekile elingaba ngu-5 ama-ether e-Cellulose njenge-MC ne-HpMC kumele ancibilike emanzini, ngisho nasebangeni lokushisa eliphezulu. Nokho, ama-molecule e-HEC ayancibilika emanzini ebangeni elibanzi lokushisa. Ukuxhomekeka kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds ayimodeli e-HEC substituents) kuncane futhi kuyafana.
Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu amaqembu awo ashintshiwe. I-3 ingu-14 ku-20 °C, yehla kancane njengoba izinga lokushisa likhuphuka, futhi yehla iye ku-10 ku-70 °C. Inani le-nH lesampula ye-HEC ngokusobala likhulu kunenani eliphansi le-nH elibalulekile elingaba ngu-5 ama-ether e-cellulose njenge-MC ne-HpMC kumele ancibilikiswe emanzini, ngisho nasebangeni lokushisa eliphezulu. Nokho, ama-molecule e-HEC ayancibilika emanzini ebangeni lokushisa elibanzi. Ukuncika kwezinga lokushisa kwe-nH yeI-HECamasampula kanye ne-triglycol (ama-compounds ayimodeli ezinto ezithatha indawo ye-HEC) athambile futhi afana. Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu amaqembu awo athatha indawo yawo.
Inani le-nH lesampula ye-HEC ngokusobala likhulu kunenani eliphansi le-nH elibalulekile elingaba ngu-5. Ama-ether e-cellulose njenge-MC ne-HpMC kumele ancibilikiswe emanzini, ngisho nasebangeni lokushisa eliphezulu. Nokho, ama-molecule e-HEC ancibilikiswe emanzini ebangeni lokushisa elibanzi. Ukuxhomekeka kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds amamodeli e-substituents e-HEC) kuncane futhi kuyafana. Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu ngamaqembu awo ashintshiwe. Inani le-nH lesampula ye-HEC ngokusobala likhulu kunenani eliphansi le-nH elibalulekile elingaba ngu-5 Ama-ether e-cellulose njenge-MC ne-HpMC kumele ancibilikiswe emanzini, ngisho nasebangeni lokushisa eliphezulu. Nokho, ama-molecule e-HEC ancibilikiswe emanzini ebangeni lokushisa elibanzi. Ukuxhomekeka kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds amamodeli e-substituents e-HEC) kuncane futhi kuyafana.
Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu ngamaqembu awo ashintshiwe. Ama-molecule e-HEC ancibilika emanzini ebangeni elibanzi lokushisa. Ukuncika kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds ayimodeli e-HEC substituents) kuncane futhi kuyafana. Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu ngamaqembu awo ashintshiwe.I-HECAma-molecule ayancibilika emanzini ebangeni elibanzi lokushisa. Ukuncika kwezinga lokushisa kwe-nH yamasampula e-HEC kanye ne-triglycol (ama-compounds ayimodeli e-HEC substituents) kuncane futhi kuyafana. Lokhu kuqaphela kusikisela ngokuqinile ukuthi ukuziphatha komswakama/ukuphelelwa amanzi emzimbeni kwamasampula e-HEC kulawulwa kakhulu amaqembu awo afakwe esikhundleni.
Isikhathi sokuthunyelwe: Ephreli-25-2024