Ngomhla ziyisi-9, umagazini othi "Angewandte Chemie International Edition" ushicilele ku-inthanethi umphumela wakamuva wocwaningo wethimba locwaningo likaProfesa Xie Xiaolin weSikole SeKhemistry Nobunjiniyela Bamakhemikhali "I-Oxygen-regulated one-pot synthesis of carbon dioxide-based block copolymers" I-Huazhong University of Science and Technology yaba yiyunithi yokuqala Eyodwa ephelele.

I-Carbon dioxide-based polycarbonate (PPC), esebenzisa i-greenhouse gas CO2 njengento eluhlaza eshibhile futhi evuselelekayo, yehliswa ibe yi-CO2 kanye namanzi ngaphansi kwesenzo samagciwane. Kungumjikelezo oluhlaza futhi ozinzile "osuka emoyeni uye emoyeni". Izinto zamangqamuzana. Ngenxa yezindawo zayo ezinhle kakhulu zokuthibela amanzi nomoya-mpilo kanye nokuvumelana kwayo, i-PPC, njengengxenye ekahle yezinto zokwakha ze-polymer esekelwe ku-petroleum, ingasetshenziswa kabanzi emikhakheni efana ne-mulch yezolimo, ukupakisha kanye nezinto eziphilayo, ukunikeza isisombululo senkinga yepulasitiki. "ukungcola okumhlophe" Izindlela Eziphumelelayo. Kodwa-ke, uma kuqhathaniswa nezinto ze-polymer ezisekelwe ku-petroleum, i-PPC isenezinkinga zezakhiwo ezimbi zemishini nezokushisa kanye nezindleko zokukhiqiza eziphezulu. Ngakho-ke, ukusebenza okuphezulu kanye nokucubungula okuphansi kwe-PPC kudonse ukunaka okukhulu.

Ithimba labacwaningi lihlanganise uchungechunge lwe-polyacrylate-b-PPC block copolymers ngokusebenzisa izinhlanganisela ze-carboxyl trithioester njengama-ejenti okudlulisa amaketanga angasebenzi kahle e-carbon dioxide copolymerization (ROCOP) kanye ne-reversible addition-fragmentation chain transfer polymerization (RAFT). (Angew. Chem. Int. Ed. 2018, 57, 3593-3597). Ngokuqhubeka nokusungula izinto ezintsha kanye nocwaningo, ithimba labona ukuguqulwa okukhaliphile ukusuka ku-controllable/living radical polymerization (CRP) kuya ku-carbon dioxide copolymerization (ROCOP) ngokusebenzisa umoya-mpilo njenge-switch yamangqamuzana, futhi lahlanganisa i-polyvinyl acetate-b-PPC block copolymer esinyathelweni esisodwa. . I-block copolymer entsha ingenziwa i-hydrolyzed ngaphansi kwezimo ezithile futhi inezici ze-biodegradation egcwele. Kulindeleke ukuthi isetshenziswe njengesihlanganisi sokuhlanganisa nokuhlanganisa i-PPC nesitashi neselulosi ukuze kuzuzwe ukusebenza okuphezulu kanye nokucutshungulwa kwezindleko eziphansi kwe-PPC. Umsebenzi wocwaningo uxhaswe yiNational Key Key Research and Development Programme (2016YFB0302400) kanye neNational Natural Science Foundation of China Youth Project (21604027).

Xhumanisa nale ndatshana: I-PPC kulindeleke ukuthi izuze ukusebenza okuphezulu nokucubungula izindleko eziphansi

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