Ko te HPMC (hydroxypropyl methylcellulose) he mea whakamātotoru me te whakaū e whakamahia whānuitia ana i roto i ngā rauemi hanga, ngā paninga, ngā rongoā me ngā kai. Ko te tikanga o te HPMC 15 cps ko tōna matotoru he 15 centipoise, he iti te matotoru.
1. Whakanuia te kukū o te HPMC
Ko te huarahi tino tika me te whai hua ki te whakanui ake i te matotoru o te HPMC ko te whakanui ake i tōna kukū i roto i te otinga. Ina piki ake te wāhanga papatipu o te HPMC, ka piki ake anō hoki te matotoru o te otinga. Ko te kaupapa matua o tēnei tikanga ko te whakanui ake a te HPMC i te matotoru o te otinga mā te hanga i tētahi hanganga whatunga toru-ahu. I te pikinga ake o te maha o ngā ngota HPMC i roto i te otinga, ka piki ake anō hoki te mātotoru me te kaha o te hanganga whatunga, ā, ka piki ake te matotoru o te otinga. Heoi anō, he rohe kei reira hei whakanui ake i te kukū. Mēnā he nui rawa te kukū o te HPMC, ka heke te rere o te otinga, ā, ka pā pea ki tana mahi i roto i ngā tono motuhake, pērā i te hanganga me te whakahaere.
2. Whakahaerehia te pāmahana o te otinga
He nui te pānga o te pāmahana ki te wairewatanga me te matotoru o te HPMC. I ngā pāmahana iti iho, ka teitei ake te matotoru o te otinga HPMC; i ngā pāmahana teitei ake, ka heke te matotoru o te otinga HPMC. Nō reira, mā te whakaheke tika i te pāmahana o te otinga i te wā e whakamahia ana ka taea te whakanui ake i te matotoru o te HPMC. Me mōhio he rerekē te wairewatanga o te HPMC i roto i te otinga i ngā pāmahana rerekē. He māmā ake te horapa ki te wai matao, engari he roa te wā e pau ana ki te memeha katoa. Ka tere ake te memeha ki te wai mahana, engari he iti ake te matotoru.
3. Hurihia te uara pH o te whakarewa
He pānga anō hoki te matotoru o te HPMC ki te uara pH o te otinga. I raro i ngā āhuatanga kūpapa, tata kūpapa rānei, ko te matotoru o te otinga HPMC te mea teitei rawa. Mena ka rerekē te uara pH o te otinga mai i te kūpapa, ka heke pea te matotoru. Nō reira, ka taea te whakanui ake i te matotoru o te otinga HPMC mā te whakatikatika tika i te uara pH o te otinga (hei tauira, mā te tāpiri i tētahi pūpare, i tētahi kaiwhakahaere waikawa-pūtake rānei). Heoi, i roto i te mahi tūturu, me tino tupato te whakatikatika i te uara pH, nā te mea ka taea e ngā huringa nui te whakararu i te HPMC, te whakararu rānei i te mahi.
4. Kōwhiria he whakarewa e tika ana
He rerekē te wairewatanga me te matotorutanga o te HPMC i roto i ngā pūnaha whakarewa rerekē. Ahakoa e whakamahia ana te HPMC i roto i ngā otinga wai, mā te tāpiri i ētahi whakarewa waro (pēnei i te etanoru, te isopropanol, me ētahi atu) me ētahi atu tote rerekē rānei ka taea te whakarerekē i te āhua o te mekameka o te ngota HPMC, ā, ka pā ki te matotorutanga. Hei tauira, mā te iti o te whakarewa waro ka taea te whakaiti i te pokanoa o ngā ngota wai ki te HPMC, ā, ka piki ake te matotorutanga o te otinga. I roto i ngā mahi motuhake, me whiriwhiri ngā whakarewa waro e tika ana kia rite ki te tono tuturu.
5. Whakamahia ngā āwhina whakamātotoru
I ētahi wā, ka taea te tāpiri atu i ētahi atu āwhina whakamaroke ki te HPMC hei whakatutuki i te hua o te whakanui ake i te matotoru. Ko ngā āwhina whakamaroke e whakamahia whānuitia ana ko te xanthan gum, te guar gum, te carbomer, me ētahi atu. Ka taunekeneke ēnei tāpiringa ki ngā ngota HPMC hei hanga i tētahi hanganga tiēre kaha ake, hei whakanui ake i te matotoru o te otinga. Hei tauira, ko te xanthan gum he polysaccharide tūturu me te pānga whakamaroke kaha. Ina whakamahia me te HPMC, ka taea e ngā mea e rua te hanga i tētahi pānga mahi tahi me te whakanui ake i te matotoru o te pūnaha.
6. Hurihia te taumata o te whakakapinga o te HPMC
E pā ana hoki te matotoru o te HPMC ki te nui o te whakakapinga o ōna rōpū methoxy me te hydroxypropoxy. Ka pā te nui o te whakakapinga ki tōna wairewatanga me te matotoru o te otinga. Mā te whiriwhiri i te HPMC me ngā nekehanga whakakapinga rerekē, ka taea te whakarite i te matotoru o te otinga. Mena e hiahiatia ana he HPMC matotoru teitei ake, ka taea te whiriwhiri i tētahi hua he nui ake te ihirangi methoxy, nā te mea ko te teitei ake o te ihirangi methoxy, ko te kaha ake o te hydrophobicity o te HPMC, ā, he teitei ake te matotoru i muri i te whakarewanga.
7. Whakaroahia te wā whakarewa
Ka pā anō hoki te roa o te rewa o te HPMC ki tōna matotoru. Ki te kore e rewa katoa te HPMC, e kore te matotoru o te wairewa e eke ki te āhua pai. Nō reira, mā te whakaroa tika i te wā rewa o te HPMC ki te wai kia tino makuku ai te HPMC ka taea te whakanui ake i te matotoru o tōna wairewa. Ina koa ka rewa i ngā pāmahana iti, ka puhoi pea te tukanga rewa o te HPMC, ā, he mea nui te whakaroa i te wā.
8. Hurihia ngā āhuatanga kutikuti
E pā ana hoki te matotoru o te HPMC ki te kaha kutikuti e pā ana ki a ia i te wā e whakamahia ana. I raro i ngā āhuatanga kutikuti teitei, ka heke te matotoru o te otinga HPMC mō te wā poto, engari ina mutu te kutikuti, ka hoki mai te matotoru. Mō ngā tukanga e hiahia ana kia nui ake te matotoru, ka taea te whakaiti i te kaha kutikuti e pā ana ki te otinga, ka taea rānei te whakahaere i raro i ngā āhuatanga kutikuti iti hei pupuri i te matotoru teitei ake.
9. Kōwhiria te taumaha ngota tika
Ka pā tika te taumaha ngota o te HPMC ki tōna matotoru. Ko te HPMC he nui ake te taumaha ngota ka hanga i tētahi hanganga whatunga nui ake i roto i te otinga, ka hua ake he matotoru teitei ake. Mena me whakanui ake e koe te matotoru o te HPMC, ka taea e koe te whiriwhiri i ngā hua HPMC he nui ake te taumaha ngota. Ahakoa he hua matotoru iti te HPMC 15 cps, ka taea te whakanui ake i te matotoru mā te whiriwhiri i tētahi momo taumaha ngota teitei o taua hua anō.
10. Whakaarohia ngā āhuatanga taiao
Tērā pea ka pāngia te matotoru o te wairewa HPMC e ngā āhuatanga taiao pēnei i te haumākū me te pēhanga. I roto i te taiao haumākū nui, ka mimiti pea te HPMC i te makuku mai i te hau, ka heke ai tōna matotoru. Hei karo i tēnei, ka taea te whakahaere tika i ngā āhuatanga taiao o te wāhi whakaputa, o te wāhi whakamahi rānei kia noho maroke tonu te taiao, kia tika ai te pēhanga hei pupuri i te matotoru o te wairewa HPMC.
He maha ngā huarahi hei whakanui ake i te matotoru o te otinga HPMC 15 cps, tae atu ki te whakanui ake i te kukū, te whakahaere i te pāmahana, te whakarite i te pH, te whakamahi i ngā āwhina whakamātotoru, te whiriwhiri i te taumata whakakapinga me te taumaha ngota e tika ana, me ētahi atu. Ko te tikanga motuhake hei whiriwhiri ka whakawhirinaki ki te horopaki tono tuturu me ngā whakaritenga tukanga. I roto i te mahi tuturu, he mea tika kia whakaarohia whānuitia ngā āhuatanga maha me te hanga i ngā whakatikatika me ngā arotautanga tika kia pai ai te mahi a te otinga HPMC i roto i ngā tono motuhake.
Wā tuku: Oketopa-16-2024