Indlela yokuvelisa
Indlela yoku-1: Indlela ye-Hydrolysis
Iacrylamideefunyenwe ngendlela ye-hydrolysis inokusasazwa ngokungaqhelekanga kwamatyathanga e-acrylamide kumatyathanga e-macromolecular.Ipesenti yemolar yeacrylamideamatyathanga kumatyathanga macromolecular yi iqondo hydrolysis.
Xa kuthelekiswa nendlela ye-copolymerization, i-anti-dandruff factor (HD) ye-soluble yamanzi yeemveliso ezilungiselelwe yindlela eqhelekileyo ye-hydrolysis ayiphezulu, ngaphantsi kwe-30%.Ngokwethiyori, iimveliso ezine-HD ngaphezulu kwe-70% kufuneka zilungiswe ngendlela ye-copolymerization, eneemfuno ezithile kwiqondo lokushisa le-hydrolysis kunye neziganeko, kwaye zilungele ukuthotywa kwe-macromolecular ngexesha lenkqubo ye-hydrolysis.
Indlela yesi-2: I-Polymerization yesisombululo samanzi
Isisombululo se-Aqueous polymerization polymerization apho i-monomer yokusabela kunye ne-initiator zichithwa emanzini.Le ndlela ilula, ngaphantsi ungcoliseko lokusingqongileyo, isivuno eliphezulu polymer, kulula ukufumana isalamane eliphezulu polymer ubunzima molekyuli, yindlela yokuqala esetyenziswa kwimveliso yoshishino polyacrylamide, kwaye ibe yeyona ndlela iphambili imveliso yoshishino polyacrylamide.I-polymerization yesisombululo se-aqueous ifundwe nzulu.
Indlela yesi-3: I-emulsion polymerization eguqulweyo
Inkqubo ye-colloidal dispersion yesigaba esibuyiselweyo kufuneka ilungiswe phambi kokuba i-emulsion polymerization iguqulwe-isigaba kunye ne-reversed-phase suspension polymerization, oko kukuthi, amanzi / i-oyile (W / 0) inkqubo yokusasazwa kwe-heterogeneous yenziwa kwinqanaba le-oyile yesisombululo samanzi se-monomer ngokuvuselela ukusasazwa. okanye i-emulsifier, kwaye ke umqalisi wongezwa kwisiseko sepolymerization yasimahla.
Ngokuqhelekileyo, iziqalisi ze-oyile ezinyibilikayo zisetyenziselwa ukuguqulwa kwe-emulsion polymerization, ubukhulu becala i-anionic free radical initiators kunye ne-non-ionic free radical initiators, ngelixa i-polymerization yesigaba esibuyiselweyo isebenzisa iziqalisi ezinyibilikayo zamanzi, ezifana ne-persulfate.Kukho iimbono ezimbini kwindlela ye-nucleation ye-AM / AA eguqulelwe i-emulsion polymerization: i-micellar nucleation kunye ne-monomer droplet nucleation.I-kinetics yahluke kakhulu kuleyo ye-emulsion ye-polymerization eqhelekileyo.
Indlela yesi-4: Ukubuyisela umva ukumiswa kwepolymerization
I-polymerization yesigaba esibuyiselweyo yindlela efanelekileyo yokuvelisa iipolymers ezinyibilikayo zamanzi eziphuhliswe kwiminyaka eyi-10 yakutshanje.I-Di-monie ifunde i-AM i-reverse-phase susspension polymerization isebenzisa i-conductivity, i-NMR kunye ne-electron microscopy kwi-1982.
Indlela yesi-5: Ezinye iindlela zepolymerization
Ukongeza kwezi ndlela zingasentla, i-homopolymer kunye ne-copolymer ye-acrylamide kunye ne-derivatives yayo ingatshintshwa yi-Mannich reaction kunye ne-grafting copolymerization.Ukuqaliswa kwe-amines kwi-polyacrylamide ngexesha lokuphendula kwe-Mannich yindlela ebalulekileyo yokufumana i-cationic polyelectrografting ye-polyacrylamide.I-amines esetyenziswa ngokuqhelekileyo yi-dimethylamine, i-diethylamine, i-diethanolamine kunye nokunye.
I-AM/AA isoloko ihlonyelwa ngestatshi ukulungiselela iintlaka ezifunxa kakhulu, okanye nezinye ii-monomers ze-macromolecular ukuze kuhlonyelwe i-AM/AA kwiinwebu ezithile.I-molecular weight cationic polyacrylamide (CPAM) isetyenziswa ngokubanzi kwimveliso yeoli, kodwa i-HPAM inokunyamezela ityuwa.
Ixesha lokuposa: Mar-09-2023