He takaro HPMC i roto i te hopi horoi makawe?

Te Waikawa Waikawa Metilururo (HPMC)He matū hanga-haurua te HPMC, e whakamahia whānuitia ana i roto i ngā mahi rongoā, kai, hanga me ngā mea whakapaipai. I roto i te hopi horoi makawe, ko te HPMC, hei tāpiringa maha-mahi, ko te mahi matua he whakamātotoru, he hanga kiriata, he whakamakuku, he whakaū i te hopi me te whakapai ake i te wheako kaiwhakamahi.

1. Te whakamātotoru me te whakahaere i te reuma: te whakapai ake i te kakano me te ahua o te hopi horoi

Ka pā tika te matotoru o te hopi horoi ki te wheako o te kaihoko. Mēnā he angiangi rawa te kakano, ka nui rawa te ringihanga, ka kore rānei e taurite te tohatoha; ki te matotoru rawa, he uaua ki te pania kia ōrite. He pūmua wairewa te HPMC. I muri i te totoro o tōna mekameka ngota i roto i te wai, ka hangaia he hanganga whatunga toru-ahu, ka nui ake te matotoru o te pūnaha mā te hononga ā-tinana me te hononga hauwai.

Whakahaere tika i te matotoru

He hononga tata te pānga whakamātotoru o te HPMC ki te nui o te whakakapinga (te ōwehenga o ngā rōpū hydroxypropyl me te methoxy), te taumaha ngota me te kukū o te otinga. Hei tauira, ka taea e te HPMC tino whakakapia (pēnei i te HPMC K100M) te whakarato i te kaha whakamātotoru kaha ake, engari ko ngā tauira iti-matatini (pēnei i te HPMC E5) he pai mō ngā hiahia whakamātotoru iti. Ka taea e ngā kaihanga te whiriwhiri ngāwari i ngā tauira kia rite ki te kakano e hiahiatia ana (he kirikiri, he emulsion, me ētahi atu).

Ngā āhuatanga angiangi kutikuti

Ina pēhia te pounamu e ngā kaihoko, ka heke te matotoru o te hopi whakamatotoru HPMC i raro i te kaha kutikuti, kia māmā ake ai te riringi; i muri i te tūnga, ka whakahokia mai tōna matotoru taketake kia kore ai e wehewehea i te wā e rongoa ana. Mā tēnei "thixotropy" ka pai ake te ngāwari o te whakamahi.

2. Te hanganga kiriata me te tiaki makawe: Te hanga i tētahi ārai tiaki mō te makawe

Ko te āhuatanga hanga kiriata o te HPMC ko tōna painga matua e wehewehe ana i a ia mai i ngā mea whakamātotoru noa. Ka taea e ngā here hydroxyl me te ether i roto i ōna ngota te hanga hononga hauwai me te keratin makawe hei hanga i tētahi kiriata mārama, ngāwari ki te mata o te makawe.

Whakaitihia te kino ā-mīhini

I te wā e horoi ana i te makawe, ka ngāwari te miro o ngā unahi makawe nā te waku. Ka taea e te kiriata HPMC te whakangawari i ngā unahi makawe me te whakaiti i te tauwehenga waku i te wā e heru ana (e whakaatu ana ngā rangahau ka taea e ia te whakaiti i te waku mā te 30%), ā, ka whakaiti i te whati o te makawe me te hiko pateko.

Te whakanui i te kanapa me te maukati tae

Mō te hunga e tae ana i ō rātou makawe, ka taea e te kiriata HPMC te whakaroa i te ngaronga o ngā ngota tae me te whakaroa i te roa o te tae makawe. I taua wā anō, ka taea e te paparanga kiriata ōrite te whakarei ake i te whakaata mārama me te hanga i te makawe kia kanapa tūturu. E whakaatu ana ngā whakamātautau mā te tāpiri i te 1% HPMC ki te hopi horoi makawe ka taea te whakanui ake i te whakaata o te mata o te makawe mā te 15%-20%.

3. Whakamakuku me te whakangawari: Te pupuri i te taurite o te makuku o te makawe

Ko te nui o te wai i roto i te makawe hauora he tata ki te 10%-15%. Ko te tikanga whakamakuku o te HPMC e rua ngā āhuatanga:

Te ātete ki te wai

Ka taea e ngā rōpū hydrophilic (-OH, -OCH3) i roto i te ngota ngota te here ki te makuku o te taiao. I raro i ngā āhuatanga haumākū 60%, ka taea e te mimiti makuku taurite o te HPMC te eke ki te 12%-15%, ā, ka āwhina i te makawe kia mau tonu te makuku taurite.

Te hiri

Ka taea e te kiriata i hangaia te whakaiti i te mimiti wai. Whai muri i te whakamātautau, whai muri i te whakamahi i te hopi horoi makawe kei roto te HPMC, ka heke te tere ngaronga wai o te makawe i roto i te taiao maroke mō te 8 hāora mā te 25%.

4. Te pumau o te tātai: "Kaihanga hanganga" o te pūnaha maha-wāhanga

Ko te nuinga o ngā hopi horoi makawe o ēnei rā he pūnaha matatini kei roto ko te hinu silicone, ngā tangohanga tipu, me ngā matūriki iri (pērā i te rongoā ārai-pango ZPT). Ka whakarei ake te HPMC i te pumau mā roto i ngā tikanga e whai ake nei:

Te mararatanga o te whakatārewatanga

Ka taea e te hanganga whatunga te kawe i ngā matūriki he nui ake te mātotoru (pēnei i te mātotoru ZPT ≈ 1.8 g/cm³) hei ārai i te whakatō. Mā te tāpiri i te 0.5% HPMC ka taea te whakaroa i te pumau o te whakatārewatanga o te ZPT mai i te 3 rā ki te neke atu i te 6 marama.

Āwhina whakaemulsification

Mahi tahi me ngā matū horoi hei whakaiti i te taumahatanga ā-kanohi hinu-wai, me te whakapai ake i te whai huatanga o te whakaemulsification o ngā wāhanga hydrophobic pērā i te hinu silicone. Kua whakaatuhia e ngā rangahau ka taea e te HPMC te whakaiti i te tohatoha rahi matūriki o ngā whakaemulsion mai i te 5-50μm ki te 1-10μm.

5. Ngāwari me te haumaru: he pai mō te kiriuhi kiri tairongo

Ki te whakaritea ki ngā whakamātotoru tuku iho (pērā i ngā pūmua kiriaku), he nui ngā painga o te HPMC:

Kore-ionic: ka taupatupatu te kore utu ki ngā matū horoi anionic (pēnei i te SLES)

Whānui te manawanui ki te pH: pumau i roto i te awhe pH o te 3-11, he pai mō ngā pūnaha whakatakotoranga rerekē

Te hototahitanga koiora teitei: Whakamātautau OECD, ko tana kaute whakapataritari kiri he 0 (kāore e whakapataritari), ko te taupū whakapataritari kanohi he 1.2 (kei raro iho i te rohe o te 3.0)

6. Ngā tauira tono me ngā au auahatanga

He tauira kore-hiraka: Ka whakaranua te HPMC me te kapia guar cationic hei whakakapi i te hinu silicone kia maeneene ai. Hei tauira, ka whakamahia e tētahi waitohu hopi horoi "hinu silicone 0" te 1.2% HPMC + 0.5% kapia guar C-14S, ā, ka whakaitihia te kaha o te heru mā te 42%.

Tukunga hohe: Whakamahia ngā āhuatanga tairongo pāmahana o te HPMC (ko te pāmahana wairewa iti rawa he 60°C) hei whakawhanake i ngā hua hopi makawe atamai ka taea te tuku i ngā kai tiaki makawe i te pāmahana tinana.

HPMCKa tutuki te taurite i waenga i te mahi me te haumaru i roto i te hopi horoi makawe. Kāore tōna uara e whakaatahia ana i roto i te arotautanga o te mahi taketake anake, engari ka whakaratohia hoki te whai wāhitanga mō te auahatanga o te tauira. I te pikinga ake o te hiahia o ngā kaihoko mō te "ataahua ma" me te māramatanga o te whai huatanga, ka whai wāhi tonu tēnei kai taketake ki te mahi nui. I te heke mai, ko te whanaketanga o ngā hua HPMC zwitterionic mā te whakarerekētanga matū ka noho hei huarahi hou hei whakarei ake i tōna hototahitanga me tōna mahi.