Tikanga whakaputa
Tikanga 1: Tikanga hydrolysis
Ko teacrylamideka whiwhi i te tikanga hydrolysis he tohatoha koretake o nga mekameka acrylamide ki nga mekameka macromolecular. Ko te ōrau molar oacrylamideKo nga mekameka i runga i nga mekameka macromolecular ko te tohu o te hauwai.
Ka whakatauritea ki te tikanga copolymerization, ko te wai-wairewa anti-dandruff factor (HD) o nga hua i mahia e te tikanga hydrolysis whanui kaore i te teitei, iti iho i te 30%. Ko te tikanga, ko nga hua me te HD neke atu i te 70% me whakarite e te tikanga copolymerization, kei a ia etahi whakaritenga mo te pāmahana me nga huihuinga o te hydrolysis, a he pai ki te paheketanga macromolecular i te wa o te mahi hydrolysis.
Tikanga 2: Te polymerization o te wairewa wai
Te polymerization polymerization wairewa wai ka rewa te monomer tauhohenga me te kaitakawaenga ki te wai. He ngawari tenei tikanga, he iti ake te poke o te taiao, he nui te hua o te polymer, he ngawari ki te whiwhi i te polymer taumaha mole, ko te tikanga tuatahi i whakamahia i roto i te hanga ahumahi o te polyacrylamide, a ko te tikanga matua o te hanga ahumahi o te polyacrylamide. Kua tino rangahaua te polymerization o te wairewa wai.
Tikanga 3: Te whakaehunga polymerization kua huri
Me whakarite te punaha whakamararatanga colloidal-whakamuri i mua i te whakaehunga whakaehunga-whakamuri me te polymerization whakatara-whakamuri, ara, te wai/hinu (W/0) ka hangaia te punaha marara rereke i roto i te wahanga hinu o te wairewa wai monomer ma te whakakorikori i te whakamararatanga. he whakaewhero ranei, katahi ka taapirihia te kaikiri mo te polymerization kore utu.
Ko te tikanga, ka whakamahia nga kaiwhakatairanga wairewa hinu i roto i te polymerization whakaehunga-waa-whakamuri, te nuinga o nga kaikokiri tuwhena kore-a-rangi me nga kaitao katote-kore-kore, i te wa e whakamahi ana te polymerization whakatara-whakamuri i te wairewa wairewa, penei i te persulfate. E rua nga tirohanga mo te hanga nucleation o AM/AA whakaehunga whakaehunga polymerization: micellar nucleation me monomer droplet nucleation. He rereke nga kinetics i tera o te whakaehunga polymerization pai.
Tikanga 4: Whakamuri i te polymerization whakatārewatanga
Ko te polymerization whakatara whakamuri he tikanga pai mo te hanga ahumahi o nga polymers wairewa-wai i whakawhanakehia i roto i nga tau 10 tata nei. I ako a Di-monie i te polymerization whakatara whakamuri-waahanga AM ma te whakamahi i te kawe, te NMR me te miihini irahiko i te tau 1982.
Tikanga 5: Ētahi atu tikanga polymerization
I tua atu i nga tikanga o runga ake nei, ka taea te whakarereke i te homopolymer me te copolymer o te acrylamide me ona hua e te Mannich reaction me te grafting copolymerization. Ko te whakauru o nga amine ki roto i te polyacrylamide i te wa o te tauhohenga Mannich he huarahi nui ki te whiwhi polyelectrografting cationic o te polyacrylamide. Ko nga amine e whakamahia nuitia ana ko te dimethylamine, diethylamine, diethanolamine me etahi atu.
He maha nga wa ka honoa te AM/AA ki te māngaro hei whakarite i nga kapia tino kaha, me etahi atu monomers macromolecular hei hono i te AM/AA ki etahi kiriuhi. Ko te polyacrylamide cationic taimaha teitei (CPAM) e whakamahia nuitia ana i roto i te hanga hinu, engari he ngoikore te tote a HPAM.
Wā tuku: Maehe-09-2023