Ko ngā tikanga whakarewa o te HPMC ko: te tikanga otinga inamata wai matao me te tikanga otinga wera, te tikanga whakaranu paura me te tikanga whakamakuku whakarewa waro.
Ka rongoatia te wai matao o te HPMC ki te glyoxal, ka tere te marara ki roto i te wai matao. I tēnei wā, ehara i te otinga tūturu. He otinga ina piki te matotoru. Kāore te wai wera e rongoatia ki te glyoxal. Ina nui te rōrahi o te glyoxal, ka tere te marara, engari ka āta piki te matotoru.
Nā te mea kāore e wairewa te HPMC i roto i te wai wera, ka taea te marara ōrite te HPMC ki roto i te wai wera i te tīmatanga, kātahi ka tere te wairewa ina whakamatao.
E rua ngā tikanga noa e whakamāramahia ana i raro nei:
1) Tāpirihia te nui o te wai wera e hiahiatia ana ki roto i te ipu, ka whakamahana kia tata ki te 70 ℃. I tāpirihia mārire te Hydroxypropyl methylcellulose me te whakaoho puhoi, ka tīmata te HPMC ki te mānu i runga i te wai, kātahi ka hanga mārire te paraoa pokepoke, ka whakamataohia i te whakaoho.
2) Tāpirihia te 1/3, te 2/3 rānei o te wai e hiahiatia ana ki roto i te ipu, whakamahanahia ki te 70 ℃, whakamararatia te HPMC kia rite ki te tikanga o 1) hei whakarite i te paru wai wera; Kātahi ka tāpirihia te toenga o te wai matao ki te paru wai wera, whakaohokia, ka whakamatao i te ranunga.
Ka taea te whakarewa i te HPMC wai matao inamata mā te tāpiri tika i te wai, engari ko te wā matotoru tuatahi ko te 1 ki te 15 meneti. Kaua te wā mahi e neke ake i te wā tīmatanga.
Tikanga whakaranu paura: Ka marara katoa te paura HPMC mā te whakaranu maroke ki ngā wāhanga paura ōrite, neke atu rānei, kātahi ka whakarewaina ki te wai. I tēnei wā, ka taea te whakarewa i te HPMC me te kore e piri.
Tikanga whakamakuku whakarewa waro:
Ka taea te whakarewa i te hydroxypropyl methylcellulose mā te whakamarara ki roto i te whakarewa waro, mā te whakamakuku rānei ki te whakarewa waro, kātahi ka tāpirihia ki te wai matao, ki te wai matao rānei. Ka taea te whakamahi i te etanoru, te etilena glycol, me ētahi atu hei whakarewa waro.
Wā tuku: Hanuere-20-2022