Ukunqwabelana kwama-microorganisms ebusweni kuyinselele kokubili embonini yemikhumbi neye-biomedical.Ezinye izimbobo ze-polymer ezithandwayo ezilwa nokungcoliswa zithola ukuwohloka kwe-oxidative emanzini olwandle, okuwenza angasebenzi ngokuhamba kwesikhathi.I-amphoteric ion (ama-molecule anamacala angemuhle futhi alungile kanye nenani eliphelele kaziro) izimbotshana ze-polymer, ezifana nokhaphethi abanamaketanga e-polymer, zidonse ukunaka njengezinye izindlela ezingase zibe khona, kodwa okwamanje kufanele zikhuliswe endaweni engenalutho ngaphandle kwamanzi noma umoya.Lokhu kuzivimbela ukuthi zifakwe ezindaweni ezinkulu.
Ithimba eliholwa ngu-Satyasan Karjana e-A*STAR Institute of Chemical and Engineering Sciences lithole indlela yokulungisa ama-amphoteric polymer coatings emanzini, ekamelweni lokushisa kanye nomoya, okuzokwenza ukuthi asetshenziswe ngesilinganiso esibanzi kakhulu.
"Kwaba ukutholakala okudabukisayo," kuchaza u-Jana. Ithimba lakhe lalizama ukwenza ama-amphoteric polymer coatings lisebenzisa indlela esetshenziswa kabanzi ebizwa ngokuthi i-atom transfer radical polymerization, lapho libona ukuthi ukusabela okuthile akuzange kukhiqize umkhiqizo owawufunwa.I-amine yatholwa kungalindelekile ukuphela kweketango le-polymer njenge-ligand ku-catalyst esetshenziswa ekuphenduleni.” Kuyothatha isikhathi esithile nochungechunge lokuhlola ukwembula imfihlakalo [yendlela eyafika ngayo lapho],” kuchaza uJana.
Ukubuka kwe-Kinetic, i-nuclear magnetic resonance spectroscopy (NMR) nokunye ukuhlaziya kubonisa ukuthi ama-amine aqala ukukhiqizwa kwe-polymerization ngokusebenzisa ama-anion mechanisms. okuholela ithimba ekungabazeni abakutholile.Baphendukela kumamodeli amakhompyutha ukuze babone ukuthi kwenzekani.
"Izibalo zethiyori yokuminyana ziqinisekisa indlela ehlongozwayo yokwenza i-anionic polymerization," esho.” Lesi isibonelo sokuqala ngqa se-anionic solution polymerization yama-ethylene monomers endaweni enamanzi ngaphansi kwezimo ze-aerobic ezizungezile.
Ithimba lakhe manje selisebenzise le ndlela ukuze lihlanganise izimbotshana ze-polymer ezivela kuma-amphoteric monomers amane kanye nenani lama-anionic Initiators, amanye awo angewona ama-amine.” Ngokuzayo, sizosebenzisa le ndlela ukuze sakhe izendlalelo ze-polymer ezingamelana ne-biofilt ezindaweni ezinkulu ezingaphezulu. usebenzisa izindlela zokufutha noma zokufakela,” kusho u-Jana.Baphinde bahlele ukutadisha imiphumela ephikisana ne-antifouling ye-coatings ku-Marine and biomedical applications.
Isikhathi sokuthumela: Mar-18-2021