izindaba

I-Polyethylenimine (PEI)iyi-polymer encibilika emanzini. Ukuhlushwa emanzini kwemikhiqizo yezentengiselwano kuvame ukuba ngu-20% kuya ku-50%. I-PEI yenziwe i-polymer kusuka ku-ethylene imide monomer. Iyi-polymer ye-cationic evame ukubonakala njengoketshezi olungenambala kuya koluphuzi noma oluqinile olunezinhlobonhlobo zesisindo sama-molecule kanye nezinhlobo zesakhiwo.

Kuyinii-polyethyleneimineumsebenzi?

1. Ukunamathela okuphezulu, iqembu lama-amino elimunca kakhulu lingasabela neqembu le-hydroxyl ukuze lakhe isibopho se-hydrogen, iqembu lama-amine lingasabela neqembu le-carboxyl ukuze lakhe isibopho se-ionic, iqembu lama-amine lingasabela neqembu le-carbon acyl ukuze lakhe isibopho se-covalent. Ngesikhathi esifanayo, ngenxa yesakhiwo salo se-polar (amine) kanye neqembu le-hydrophobic (vinyl), lingahlanganiswa nezinto ezahlukene. Ngala mandla okubopha aphelele, lingasetshenziswa kabanzi emikhakheni yokuvala, uyinki, upende, i-binder nokunye.

2. I-polyvinyl imide ene-cationic ephezulu ikhona ngesimo se-polycation emanzini, engakwazi ukuqeda futhi imunce zonke izinto ze-anionic. Iphinde ikhiphe ama-ion ensimbi esindayo. Ngezakhiwo zayo eziphakeme ze-cationic, ingasetshenziswa ekwenzeni iphepha, ekuphatheni amanzi, ekuphekeni kwesisombululo, ekusakazeni amanzi nakwezinye izinkambu.

3. I-polyethylenimine esabela kakhulu ngenxa yama-amine ayinhloko nawesibili asabela kakhulu, ngakho-ke ingasabela kalula nge-epoxy, ama-acid, ama-isocyanate compounds kanye namagesi e-asidi. Isebenzisa lesi sici, ingasetshenziswa njenge-epoxy reactant, i-aldehyde adsorbent kanye ne-ejenti yokulungisa umbala.

I-polyethylenimine isetshenziselwani?

I-Polyethylenimine (PEI)iyinhlanganisela ye-polymer eguquguqukayo enezindlela ezahlukahlukene zokusetshenziswa, okuhlanganisa kodwa kungagcini lapho:

1. Ukwelashwa kwamanzi kanye nemboni yephepha. Njenge-ejenti yokuqinisa amanzi, isetshenziswa ephepheni elingamuncwanga (njengephepha lokuhlunga, iphepha lokucisha uyinki, iphepha langasese, njll.), okungathuthukisa amandla okumanzi ephepha futhi kunciphise umonakalo wokucubungula iphepha, kuyilapho kusheshiswa ukuhluzwa kwamanzi kwe-pulp futhi kwenze imicu emincane ibe lula ukuyithungatha.

2. I-ejenti yokulungisa umbala. Inamandla amakhulu okubopha amadayi e-asidi futhi ingasetshenziswa njenge-ejenti yokulungisa lapho amadayi e-asidi edaya iphepha.

3. Ukuguqulwa kwefayibha kanye nezinto ezisizayo zokudaya. Ukwelashwa kwefayibha, njengezivikelo zomzimba, amagilavu ​​​​okuvimbela ukusika, intambo, njll.

4. Izinto ze-elekthronikhi. Emkhakheni wezinto ze-elekthronikhi, ifilimu ye-polyethylene imide ingasetshenziswa njengesendlalelo sokuhlukanisa, izinto zokuvikela umswakama kanye nesendlalelo sokumboza izingxenye ze-elekthronikhi, njll., ngokusebenza kahle kokuvikela umswakama kanye nokumelana nokushisa okuphezulu.

5. Ukupakisha ukudla. Njengezinto zokupakisha ukudla, inezinzuzo zokumelana nomswakama, ukumelana negesi okuhle, ukunganambitheki, ukunganambitheki, ukumelana nokushisa okuphezulu, njll., futhi isetshenziswa kabanzi ekupakisheni inyama, izinkukhu, izithelo, imifino, ikhofi neminye imikhiqizo.

6. Izinto zokwelapha. I-Polyvinylimine ingasetshenziswa kumadivayisi ezokwelapha, amathuluzi okuxilonga, emaphaketheni ezokwelapha, njll., njengezindwangu zezokwelapha namafilimu ezokwelapha asobala.

7. I-Adhesive. Njenge-adhesive esebenza kahle kakhulu, isetshenziswa ekwakhiweni kwezindiza, izingxenye ze-elekthronikhi, izingxenye zezimoto njalo njalo.

8. Izinto zokwelapha amanzi kanye nezihlanzi. Isetshenziswa kabanzi ekwenzeni iphepha lokwelapha amanzi, isixazululo se-electroplating, i-dispersant kanye neminye imikhakha. Umthwali we-gene. I-Polyvinylimide iyi-vector engeyona i-viral yokulethwa kwezakhi zofuzo, efanelekile ikakhulukazi ekudlulisweni kwe-plasmid eminingi.

Ngaphezu kwalokho,i-polyethyleniminefuthi inezici zokunamathela okuphezulu, ukumuncwa okuphezulu, i-cation ephezulu, ukusabela okuphezulu, njll., futhi isetshenziswa kabanzi emikhakheni yopende, uyinki, ingcina, ukwelashwa kwefayibha, ukwelashwa kwendle nokunye.

Ngokuvamile, i-polyvinyllimide iyi-polymer eguquguqukayo enezinhlelo zokusebenza eziningi, futhi izakhiwo zayo zingalungiswa futhi zilungiselelwe ngokushintsha isisindo sama-molecule, isakhiwo kanye nokusebenza kwawo.