Whakaahuahia：
Ngā hanganga kai e whai ake neingā etera cellulose
Mara hangarau：
E pā ana tēnei mahi auaha ki ngā hanganga kai kei roto ngā cellulose ethers.
Tikanga papamuri：
Kua roa e mōhiotia ana te whakauru i ngā etera cellulose ki roto i ngā hanganga kai, inā koa ko ngā hanganga kai tukatuka, hei whakapai ake i ngā āhuatanga rerekē pēnei i te pumau me te/ranei te kakano o te tio-rewa, hei whakapai ake rānei i te pakari i te wā e hangaia ana, e tukatukahia ana e te mīhini, e parai rānei. E whakaatu ana te tono patent Peretānia GB 2 444 020 i aua hanganga kai kei roto ko te etera cellulose kore-ionic pēnei i te methylcellulose, te hydroxypropyl cellulose, te hydroxypropyl methylcellulose rānei. He "āhuatanga whakapūmau thermos reversible" tō te methylcellulose me te hydroxypropyl methylcellulose. E whakaahuahia ana i te wā e whakamahanahia ana he otinga wai o te methylcellulose, te hydroxypropyl methylcellulose rānei, ka maroke te rōpū methoxy hydrophobic kei roto i te ngota, ā, ka huri hei tiēre wai. I tetahi atu taha, ina whakamataohia te tiēre hua, ka whakamakukuhia anō ngā rōpū methoxy hydrophobic, ā, ka hoki te tiēre ki te otinga wai taketake.
E whakaatu ana te Patent Pākehā EP I 171 471 i te methylcellulose, he mea tino whai hua i roto i ngā hanganga kai totoka pērā i te huawhenua totoka, te mīti, me ngā keke pīni soya nā te mea kua piki ake te kaha o te tiēre. Ka whakaratohia e te methylcellulose te pakari me te piri ki te hanganga kai totoka, ā, ka pai te ahua o te ngau ki ngā kaihoko e kai ana i te hanganga kai tukatuka. Ina rewa ki te wai matao (hei tauira, 5°C, iti iho rānei) i mua atu, i muri rānei i te whakaranu ki ētahi atu kai o te hanganga kai, ka eke te methylcellulose soy ki tōna kaha katoa ki te whakarato i ngā hanganga kai totoka me te pakari me te piri pai.
Heoi, i ētahi wā, he uaua te whakamahi i te wai matao mō te kaihanga o te hanganga kai. Nō reira, he mea pai kia whakaratohia he cellulose ethers e whakarato ana i ngā hanganga kai totoka me te pakeke me te piripono pai ahakoa ka rewa ngā cellulose ethers ki te wai e pā ana ki te pāmahana rūma.
Ko te hydroxyalkyl methylcellulose pērā i te hydroxypropyl methylcellulose (e mōhiotia ana hoki he whai hua i roto i ngā hanganga kai) e mōhiotia ana he iti te modulus rokiroki ki te whakaritea ki te methylcellulose. Ko ngā hydroxyalkyl methylcellulose e whakaatu ana i te modulus rokiroki iti kāore e hanga i ngā tiēre kaha. Me nui ngā kukū e hiahiatia ana mō ngā tiēre ngoikore (Haque, A; Richardson; Morris, ER, Gidley, MJ me Caswell, DC i roto i te Carbohydrate Polymers22 (1993) wh.175; me Haque, A me Morris, ER1nCarbohydrate Polymers22 (1993) wh.161).
Ina whakaurua ngā hydroxyalkyl methylcellulose pērā i te hydroxypropyl methylcellulose (he iti nei te kaha rokiroki) ki roto i ngā hanganga kai totoka, kāore i te tino teitei tō rātou pakeke me te piripono mō ētahi whakamahinga.
Ko te whāinga o tēnei mahi hou he whakarato i te hydroxyalkyl methylcellulose, inā koa te hydroxypropyl methylcellulose, he rite ki ngā hydroxyalkyl methylcellulose e mōhiotia ana, pērā i te hydroxypropyl methylcellulose. He rerekē, ko ngā hanganga kai totoka ka whakaratohia he pakari me/te piripono kua pai ake.
Ko tētahi o ngā whāinga matua o tēnei mahi hou ko te whakarato i te hydroxyalkyl methylcellulose, inā koa ko te hydroxypropyl methylcellulose, e whakarato ana i ngā hanganga kai totoka me te pakeke me te piripono pai ahakoa te hydroxyalkyl methylcellulose. Pērā anō hoki ina rewa ki te wai me te pāmahana rūma.
He mea whakamiharo, kua kiteahydroxyalkyl methylcellulose, inā koa te hydroxypropyl methylcellulose, ka taea te whakamahi hei hanga i ngā kai totoka. Ki te whakatauritea ki ngā hanganga kai totoka e mōhiotia ana, he nui ake te pakeke me/te piripono o ngā hanganga kai totoka e mōhiotia ana.
He mea whakamiharo anō hoki, kua kitea kāore e hiahiatia kia whakarewaina ētahi hydroxyalkyl methylcellulose, inā koa te hydroxypropyl methylcellulose, ki te wai matao hei whakarato i ngā hanganga kai totoka he pakari, he piripono rānei.
Wā tuku: 28 Paenga-whāwhā 2024