Polyethylenimine (PEI)He pūmua wairewa-wai. Ko te kukū i roto i te wai o ngā hua arumoni he 20% ki te 50%. Ka whakapūpūhia te PEI mai i te monomer ethylene imide. He pūmua cationic e puta ana hei wai kore tae ki te kōwhai, hei totoka rānei me ngā momo taumaha ngota me ngā rerekētanga hanganga.
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| MW 5000 | MW 7000 | MW 10000 | MW 20000 | MW 20000-30000 |
| MW 30000-40000 | MW 40000-60000 | MW 70000 | MW 100000 | MW 270000 |
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He aha te meapolyethyleneiminemahi?
1. He piripono teitei, he mimiti teitei, ka taea e te rōpū amino te tauhohe ki te rōpū hydroxyl hei hanga hononga hauwai, ka taea e te rōpū amine te tauhohe ki te rōpū carboxyl hei hanga hononga ionic, ka taea hoki e te rōpū amine te tauhohe ki te rōpū carbon acyl hei hanga hononga covalent. I taua wā anō, nā tōna hanganga rōpū polar (amine) me te rōpū hydrophobic (vinyl), ka taea te whakakotahi ki ngā matū rerekē. Mā ēnei kaha here whānui, ka taea te whakamahi whānui i roto i ngā mara o te hiri, te waituhi, te peita, te here me ētahi atu.
2. Kei roto i te wai te polyvinyl imide cationic-tiketike, ka taea te whakakore me te mimiti i ngā matū anionic katoa. Ka taea hoki e ia te whakakōpiri i ngā iona konganuku taumaha. Nā ōna āhuatanga cationic teitei, ka taea te whakamahi i roto i te hanga pepa, te maimoatanga wai, te whakarewa wai, te whakamarara me ētahi atu mara.
3. He polyethylenimine tino tauhohe nā te mea he tino tauhohe ngā amine tuatahi me ngā amine tuarua, nō reira ka taea te tauhohe ngāwari ki te epoxy, ngā waikawa, ngā matū isocyanate me ngā hau waikawa. Mā te whakamahi i tēnei āhuatanga, ka taea te whakamahi hei matū tauhohe epoxy, hei mimiti aldehyde me te kaihoko whakapiri tae.
He aha te whakamahinga o te polyethylenimine?
Polyethylenimine (PEI)he matū pūmua maha-whakamahinga, he maha ngā whakamahinga, tae atu ki engari kāore e herea ki:
1. Te tukatuka wai me te umanga pepa. Hei matū whakakaha mākū, ka whakamahia ki roto i ngā pepa mimiti kore-kapura (pēnei i te pepa tātari, te pepa whakakōkī waituhi, te pepa wharepaku, me ētahi atu), ka taea te whakapai ake i te kaha mākū o te pepa me te whakaiti i te kino o te tukatuka pepa, me te tere ake hoki te tātari wai o te penupenu me te ngāwari ake te whakapūpū i ngā muka angiangi.
2. He mea whakapiri tae. He kaha tōna kaha here mō ngā tae waikawa, ā, ka taea te whakamahi hei mea whakapiri ina whakamahia te waikawa hei tae i te pepa.
3. Ngā taputapu āwhina mō te whakarerekē me te tae muka. Mō te maimoatanga muka, pērā i te pukupuku tinana, ngā karapu ārai-tapahi, te taura, me ētahi atu.
4. Ngā rauemi hiko. I roto i te ao hiko, ka taea te whakamahi i te kiriata polyethylene imide hei paparanga wehe, hei rauemi whakamahana me te paparanga hipoki o ngā wāhanga hiko, me ētahi atu, he pai te mahi whakamahana me te ātete pāmahana teitei.
5. Tākai kai. Hei rauemi tākai kai, he pai ōna painga ki te ātete makuku, te ātete pai ki te hau, te kore paitini, te kore reka, te ātete ki te pāmahana teitei, me ētahi atu, ā, he whānuitia te whakamahinga i roto i te tākai mīti, heihei, hua rākau, huawhenua, kawhe me ētahi atu hua.
6. Ngā rauemi hauora. Ka taea te whakamahi i te polyvinylimine i roto i ngā taputapu hauora, ngā taputapu tātaritanga, ngā takai hauora, me ētahi atu, pērā i ngā takai hauora me ngā kiriata mārama hauora.
7. Piripiri. Hei piripiri mahi-teitei, e whakamahia ana i roto i te hanga waka rererangi, ngā wāhanga hiko, ngā wāhanga motuka me ētahi atu.
8. Ngā kaihoko maimoatanga wai me ngā kaiwhakamarara. He whānuitia te whakamahinga i roto i te maimoatanga wai hanga pepa, te otinga whakakikorua hiko, te kaiwhakamarara me ētahi atu mara. Kaikawe ira. Ko te Polyvinylimide he kawe kore-huaketo mō te tuku ira, he tino pai mō te whakawhiti tahi o ngā plasmid maha.
Hei tāpiritanga,polyethylenimineKei a ia anō hoki ngā āhuatanga o te piripono teitei, te mimiti teitei, te kationi teitei, te tauhohenga teitei, me ētahi atu, ā, he whānuitia hoki te whakamahinga i roto i ngā mara o te peita, te waituhi, te piripiri, te maimoatanga muka, te maimoatanga paru me ētahi atu.
I te nuinga o te wā, he pūhui maha ngā whakamahinga o te polyvinylimide, ā, ka taea te whakarerekē me te arotau i ōna āhuatanga mā te whakarerekē i te taumaha ngota, te hanganga me te mahi.
Wā tuku: Maehe-18-2024