He matū maha ngā whakamahinga o ngā cellulose ethers i roto i ngā momo ahumahi tae atu ki te hanga, te rongoā me te kai. He tino uaua te tukanga hanga o te cellulose ether, he maha ngā taahiraa, ā, he nui ngā tohungatanga me ngā taputapu motuhake e hiahiatia ana. I roto i tēnei tuhinga, ka matapakihia e mātou te tukanga hanga o ngā cellulose ethers.
Ko te taahiraa tuatahi i roto i te tukanga hanga cellulose ether ko te whakarite i ngā rauemi mata. Ko ngā rauemi mata e whakamahia ana hei hanga cellulose ethers i ahu mai i te penupenu rakau me te miro para. Ka haehaetia te penupenu rakau, ka tirotirohia kia tangohia ngā paru nui, ā, ka tukatukahia te para miro hei penupenu pai. Kātahi ka whakaitihia te rahi o te penupenu mā te huri kia puta he paura pai. Kātahi ka whakaranua te penupenu rakau paura me te miro para ki ngā ōwehenga motuhake i runga i ngā āhuatanga e hiahiatia ana o te hua whakamutunga.
Ko te mahi e whai ake nei ko te tukatuka matū o te rauemi whakauru. Ka tukatukahia te penupenu ki te otinga kawakore (ko te nuinga he hauwai konutai) hei wawahi i te hanganga muka o te cellulose. Kātahi ka tukatukahia te cellulose hua ki te whakarewa pēnei i te waro disulfide hei whakaputa i te cellulose xanthate. Ka mahia tēnei maimoatanga i roto i ngā tāke me te putunga penupenu tonu. Kātahi ka tukuna te otinga cellulose xanthate mā roto i tētahi taputapu whakaputa hei hanga miro.
I muri iho, ka mirohia ngā miro cellulose xanthate ki roto i te kaukau kei roto te waikawa whanariki waimeha. Ko te hua o tēnei ka puta te whakaoranga o ngā mekameka cellulose xanthate, ka hangaia he muka cellulose. Kātahi ka horoia ngā muka cellulose hou ki te wai hei tango i ngā poke i mua i te whakama. Ka whakamahia te hauwai waikura hei whakama i ngā muka cellulose, kātahi ka horoia ki te wai, ka waiho kia maroke.
I muri i te whakamaroketanga o ngā muka cellulose, ka pāngia rātou e te tukanga e kiia nei ko te etherification. Ko te tukanga etherification ko te whakaurunga o ngā rōpū ether, pērā i te methyl, ethyl, hydroxyethyl rānei, ki roto i ngā muka cellulose. Ka mahia te tikanga mā te whakamahi i te tauhohenga o te kaihoko etherification me te whakakorikori waikawa i te aroaro o te whakarewa. Ko te tikanga ka mahia ngā tauhohenga i raro i ngā tikanga pāmahana me te pēhanga e āta whakahaeretia ana kia pai ai te hua me te parakore o te hua.
I taua wā, he paura mā te āhua o te cellulose ether. Kātahi ka whakamātauhia te hua kua oti kia tutuki ai ngā whakaritenga me ngā whakaritenga e hiahiatia ana, pērā i te matotoru, te parakore o te hua me te nui o te makuku. Kātahi ka tākaihia, ka tukuna ki te kaiwhakamahi whakamutunga.
Hei whakarāpopototanga, ko te tukanga hanga o te cellulose ether ko te whakarite rauemi mata, te maimoatanga matū, te miro, te whakama me te etherification, ā, muri iho ko te whakamātautau kounga. Ko te tukanga katoa e hiahia ana ki ngā taputapu motuhake me te mōhiotanga ki ngā tauhohenga matū, ā, ka mahia i raro i ngā tikanga tino whakahaere. He tukanga uaua, he tukanga roa hoki te hanga cellulose ethers, engari he mea nui i roto i te maha o ngā ahumahi.
Wā tuku: Pipiri-21-2023