Te pūhui hauwaioraitiriHe mea nui te matū cellulose i ahu mai i te cellulose. Nā te nui o ngā rauemi mata, he mea whakahou, he mea pirau, he kore-paitini, he pai te hototahi ki te koiora, me te nui o te hua, kua nui te aro ki tana rangahau me tana whakamahinga. . Ko te uara matotoru he tohu mahi tino nui o te hydroxyethyl cellulose. I roto i tēnei pepa, i whakaritea te hydroxyethyl cellulose me te uara matotoru neke atu i te 5 × 104 mPa·s me te uara pungarehu iti iho i te 0.3% mā te tikanga hanga-wāhanga wai mā te tukanga alkaliization me te etherification e rua-taahiraa.
Ko te tukanga whakapūkara te tukanga whakarite i te cellulose kawakore. I roto i tēnei pepa, e rua ngā tikanga whakapūkara e whakamahia ana. Ko te tikanga tuatahi ko te whakamahi i te acetone hei wairewa. Ka whakapūkara tika te rauemi mata cellulose ki roto i tētahi kukū o te wairewa konutai hauwai. I muri i te mahi i te tauhohenga whakapūkara, ka tāpirihia he kaihoko whakapūkara hei whakahaere tika i te tauhohenga whakapūkara. Ko te tikanga tuarua ko te whakapūkara i te rauemi mata cellulose ki roto i tētahi wairewa o te konutai hauwai me te urea, ā, me pēhi te cellulose kawakore i whakaritea mā tēnei tikanga hei tango i te lye taikaha i mua i te tauhohenga whakapūkara. Ko te cellulose kawakore i whakaritea mā ngā tikanga rerekē i tātarihia mā te mātakitaki infrared me te diffraction X-ray. E ai ki ngā āhuatanga o ngā hua i whakaritea mā te tauhohenga whakapūkara, ka whakatauhia te tikanga whiriwhiri.
Hei whakatau i te tukanga hanga etherification pai rawa atu, i tātarihia tuatahitia te tikanga tauhohenga o te antioxidant, te lye me te waikawa acetic glacial i roto i te tauhohenga etherification. Kātahi ka hangaia te kaupapa whakamātautau o te tauhohenga tauwehe kotahi, ka whakatauhia ngā āhuatanga he nui ake te pānga ki te mahi a te hydroxyethyl cellulose kua whakaritea, ā, ka whakamahia te matotoru o te otinga wai 2% o te hua hei taupū tohutoro. E whakaatu ana ngā hua whakamātautau he nui te awe o ngā āhuatanga pēnei i te nui o te waiwhakarewa kua tohua, te nui o te ethylene oxide i tāpirihia, te wā alkaliization, te pāmahana me te wā o te tauhohenga tuatahi, te pāmahana me te wā o te tauhohenga tuarua ki te mahi a te hua. I tuhia he kaupapa whakamātautau orthogonal me ngā āhuatanga e whitu me ngā taumata e toru, ā, ka taea e te pihi pānga i tangohia mai i ngā hua whakamātautau te tātari ā-kanohi i ngā āhuatanga tuatahi me ngā āhuatanga tuarua me te ia o te awe o ia āhuatanga. Hei whakarite i ngā hua me ngā uara matotoru teitei ake, i hangaia he kaupapa whakamātautau kua arotauhia, ā, i whakatauhia te kaupapa tino pai mō te whakarite hydroxyethyl cellulose mā roto i ngā hua whakamātautau.
Ngā āhuatanga o te matotoru-teitei kua whakariteate hauwaitoiretiri pūtauI tātarihia, i whakamatautauria hoki, tae atu ki te whakatau i te matotoru, te ihirangi pungarehu, te whakawhiti mārama, te ihirangi makuku, me ētahi atu, mā te tirotiro pūwero whero, te aukume karihi, te chromatography hau, te diffraction hihi-X, te tātari wera Thermogravimetric-differential me ētahi atu tikanga tautuhi hei tātari me te tautuhi i te hanganga o te hua, te ōritetanga o te whakakapinga, te tohu whakakapinga molar, te tioata, te pumau wera, me ētahi atu. E pā ana ngā tikanga whakamātautau ki ngā paerewa ASTM.
Kua arohia te Hydroxyethyl cellulose, he mea nui i ahu mai i te cellulose, nā te nui o ngā rauemi mata, he mea whakahou, he mea pirau, he kore paitini, he hototahi ki te koiora, me te nui o te hua. Ko te matotoru o te hydroxyethyl cellulose he tohu tino nui mō tōna mahi. Kei runga ake i te 5×104mPa·s te matotoru o te hydroxyethyl cellulose kua oti te whakarite, ā, he iti iho i te 0.3% te nui o te pungarehu.
I roto i tēnei pepa, i whakaritea te hydroxyethyl cellulose matotoru-teitei mā te tikanga hanga-wāhanga wai mā te alkaliization me te etherification. Ko te tukanga alkaliization ko te whakarite i te cellulose alkali. Kōwhiria mai i ngā tikanga alkaliization e rua. Ko tētahi ko te whaka-alkali tika i te rauemi cellulose ki te acetone hei waiwhakarewa i roto i te otinga konutai hauwaiwai wai, kātahi ka pāngia e te tauhohenga etherification me te kaihoko etherifying. Ko tētahi ko te whaka-alkali i te rauemi cellulose ki roto i te otinga konutai hauwaiwai wai me te urea. Me tango te alkali taikaha i roto i te cellulose alkali i mua i te tauhohenga. I roto i tēnei pepa, ka akohia ngā momo cellulose alkali mā te spectroscopy infrared me te diffraction X-ray. Hei whakamutunga, ka whakamahia te tikanga tuarua i runga i ngā āhuatanga o ngā hua etherification.
Hei whakatau i ngā mahi whakarite mō te etherification, i rangahauhia te tikanga tauhohenga o te antioxidant, te alkali me te waikawa acetic glacial i roto i te tukanga kai. I whakatauhia ngā āhuatanga e pā ana ki te whakarite o te hydroxyethyl cellulose mā te whakamātautau tauwehe kotahi. I runga i te uara matotoru o te hua i roto i te otinga wai 2%. E whakaatu ana ngā hua whakamātautau he nui te awe o te rōrahi o te waiwhakarewa, te nui o te ethylene oxide, te wā alkaliization, te pāmahana me te wā o te rehydration tuatahi me te tuarua ki te mahi a te hua. I whakamahia te tikanga o ngā tauwehe e whitu me ngā taumata e toru hei whakatau i te tikanga whakarite pai rawa atu.
Ka tātarihia e mātou ngā āhuatanga o te mea kua whakariteate hauwaitoiretiri pūtau, tae atu ki te matotoru, te pungarehu, te whakawhiti mārama, te makuku, me ētahi atu. I matapakihia te āhuatanga hanganga, te ōritetanga o te whakakapinga, te molarity whakakapinga, te tioata me te pumau wera mā te whakamahi i te infrared, te aukume karihi, te chromatography hau, te diffraction hihi-X, te DSC me te DAT, ā, i whakamahia e ngā tikanga whakamātautau ngā paerewa ASTM.
Wā tuku: Paenga-whāwhā-25-2024