Ko te Hydroxypropyl methylcellulose (HPMC) he taonga nui me te whānuitanga o nga tono i roto i te umanga rongoa me etahi atu ahumahi penei i te kai, te whakapaipai me te hanga.Ko te hiahia mo te HPMC kei te tipu haere tonu i roto i nga tau na ona ahuatanga ahurei penei i te matotoru, te here, te hanga kiriata me te pupuri wai.I roto i tenei tuhinga, ka matapakihia e matou te tikanga whakangao wairewa kawakore o te hydroxypropyl methylcellulose (HPMC).
Ko te tikanga whakangao riihi kawakore o te hydroxypropyl methylcellulose (HPMC) he tukanga e tauhohe ai te cellulose ki te propylene oxide me te methyl chloride i te aroaro o te kawakore.Ka mahia te tukanga i raro i te pāmahana, te pehanga me nga tikanga e whakahaerehia ana e te waa ki te whakaputa hua HPMC kounga teitei.
Ko te mahi tuatahi ki te whakaputa HPMC ma te whakamahi i te tikanga whakangao riihi kawakore ko te whakarite i nga rauemi mata cellulose.Ka purea tuatahi te Cellulose ma te tango i nga poke ka huri hei cellulose alkali ma te maimoatanga me te kawakore penei i te konutai waikawa.He mea nui tenei taahiraa na te mea ka piki ake te tauhohenga o te cellulose me nga reagents e whakamahia ana i nga waahanga o muri.
Ka tukuna te cellulose alkali ki te ranunga o te propylene oxide me te methyl chloride i raro i te pāmahana me te pehanga.Ko te tauhohenga i waenga i te cellulose alkali me te reagent ka puta he hua, he ranunga o te hydroxypropyl methylcellulose me etahi atu hua-hua.
Ka horoia te ranunga, ka whakahekehia, ka tātarihia hei tango i nga poke penei i nga reagents kaore ano kia arohia me nga hua-a-muri.Ko te otinga hua ka kukū ma te whakaetonga ki te whiwhi i te hua HPMC parakore teitei.
He maha nga painga o te tikanga whakangao riihi alkali o te hydroxypropyl methylcellulose (HPMC) ki etahi atu tikanga whakaputa penei i te etherification.Ko tetahi o nga painga ko te mahi pai ake i te taiao.Kaore i rite ki etahi atu tikanga, ko te tikanga whakangao riihi alkali kaore e whakamahi i nga whakarewa halogenated e kino ana ki te taiao me te hauora tangata.
Ko tetahi atu painga o tenei tikanga ko te hanga o nga hua HPMC tino parakore.Ko nga tikanga tauhohenga whakahaere e whakarite kia rite tonu te kounga o te hua whakamutunga me te pai mo nga momo tono.
Ko te whakamahinga o te HPMC i roto i te umanga rongoa he mea nui mo te hanga papa, potae me etahi atu momo inenga.Ka taea te whakamahi i te HPMC hei here, hei whakakore, hei whakakikorua, me etahi atu. Ko te whakamahinga o te HPMC i roto i enei tono ka whakarite ko te ahua o te waahanga he kounga teitei me te whakatutuki i nga paerewa e hiahiatia ana.
Kei te whakamahia hoki te HPMC hei whakakaha, whakaehunga me te whakapumau i roto i te umanga kai.Ko te whakamahinga o te HPMC i roto i nga hua kai ka whakarite kia rite te kakano, te pokey me te kounga.
I roto i te ahumahi hanga, ka whakamahia te HPMC hei taapiri ciment hei whakapai ake i te kaha mahi, te pupuri wai me nga taonga honohono o te ciment.Ko te whakamahinga o te HPMC e whakarite ana ko nga hua hanga he kounga teitei me te whakatutuki i nga paerewa e hiahiatia ana.
Hei whakarāpopototanga, ko te tikanga whakangao riihi kawakore o te hydroxypropyl methylcellulose (HPMC) he tukanga mo te whakaputa hua HPMC kounga teitei, ka whakamahia nuitia i roto i nga momo umanga penei i te rongoa, kai, me te hanga.Ko te whakamahinga o te HPMC i roto i enei tono ka whakarite he kounga teitei te hua me te whakatutuki i nga paerewa e hiahiatia ana.Ko tenei tikanga whakaputa he pai te taiao me te whakaputa i te hua HPMC tino parakore.
Te wa tuku: Sep-15-2023