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
Whakaraurau 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 mo 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 reversed-phase i mua i te polymerization emulsion reversed-phase me te polymerization whakatara-whakamuri, ara, te wai/hinu (W/0) ka hangaia te punaha dispersion heterogeneous i roto i te wahanga hinu o te wairewa wai monomer ma te whakakorikori i te whakamararatanga. he whakaewhewhe ranei, katahi ka taapirihia te kaikawe mo te polymerization turanga kore utu.
Ko te tikanga, ka whakamahia nga kaiwhakatairanga wairewa hinu i roto i te polymerization whakaehunga o te wahanga whakamuri, ko te nuinga o nga kaiwhakatairanga tuwhena kore-katote me nga kaitao katote-kore-kore, i te wa e whakamahia ana e te polymerization whakatara-whakamuri 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 ki 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 whakatarari 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 tauhohenga Mannich me te grafting copolymerization.Ko te whakauru o nga amine ki roto i te polyacrylamide i te wa o te tauhohenga o 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 a AM/AA ki te māngaro hei whakarite i nga kapia tino mimiti, 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