Chinhu chitsva ichi ipolymer ine mativi maviri, yakagadzirwa nemelamine , iyo inozviunganidza yoga kuita mapepa, kusiyana nemamwe mapolymer ese, ayo anoumba cheni dzine mativi rimwe chete, dzakaita sespaghetti. Kusvika pari zvino, masayendisiti aitenda kuti hazvigoneke kukurudzira mapolymer kuti aumbe mapepa e2D.
Chinhu chakadaro chinogona kushandiswa sechinhu chisina kuremerwa, chinogara chakasimba chezvikamu zvemotokari kana nharembozha, kana sechivakwa chekuvaka mabhiriji kana zvimwe zvimiro, anodaro Michael Strano, Carbon P. Dubbs Purofesa weChemical Engineering paMIT uye munyori mukuru wechidzidzo chitsva.
“Hatiwanzoona mapurasitiki sechimwe chinhu chaungashandisa kutsigira chivako, asi nezvinhu izvi, unogona kuita kuti zvinhu zvitsva zviitwe,” anodaro. "Ine zvimiro zvisina kujairika uye isu tinofara nazvo."
Vaongorori vakanyorera mvumo mbiri pamusoro pemaitiro avakashandisa kugadzira zvinhu izvi, izvo zvavanotsanangura mupepa riri kubuda nhasi muNature . MIT postdoc Yuwen Zeng ndiye munyori mukuru wechidzidzo ichi.
Zviyero zviviri
Mapolymers, ayo anosanganisira ese mapurasitiki, ane maketani ezvivakwa zvekuvaka anonzi monomers. Aya maketani anokura nekuwedzera mamorekuru matsva pamagumo awo. Kana yangoumbwa, mapolymers anogona kuumbwa kuita zvinhu zvine mativi matatu, senge mabhodhoro emvura, uchishandisa jekiseni rekugadzira.
Mapolymer masayendisiti akafungidzira kwenguva refu kuti kana mapolymers anogona kukurudzirwa kuti akure kuita maviri-dimensional sheet, anofanirwa kuumba yakasimba zvakanyanya, isina kuremerwa zvinhu. Zvisinei, makumi emakore akawanda ekushanda mumunda uyu akatungamirira kumhedziso yokuti zvakanga zvisingakwanisi kugadzira mapepa akadaro. Chimwe chikonzero cheizvi chaive chekuti kana monomer imwe chete ichitenderera kumusoro kana pasi, kunze kwendege yepepa rinokura, zvinhu zvinotanga kuwedzera mumativi matatu uye chimiro chakafanana neshizha chinorasika.
Nekudaro, muchidzidzo chitsva ichi, Strano nevamwe vake vakauya nehurongwa hutsva hwepolymerization hunovatendera kugadzira pepa rine mativi maviri rinonzi polyaramide. Kune zvivharo zvekuvaka monoma, vanoshandisa komboni inonzi melamine, ine ring yecarbon nenitrogen maatomu. Pasi pemamiriro akakodzera, mamonomeri aya anogona kukura mumativi maviri, achigadzira madhisiki. Aya madhisiki akaturikidzana pamusoro peumwe neumwe, akabatwa pamwe chete nehydrogen zvisungo pakati pematanho, izvo zvinoita kuti chimiro chigadzikane uye chakasimba.
"Panzvimbo yekugadzira spaghetti-semorekuru, tinogona kugadzira pepa-rakafanana nendege yemamorekuru, kwatinowana mamorekuru kuti azvikochekere pamwe chete mumativi maviri," anodaro Strano. "Muchina uyu unoitika zvega mumhinduro, uye mushure mekugadzira zvinhu, tinogona nyore kupeta-jasi mafirimu matete akasimba zvakanyanya."
Nemhaka yekuti zvinhu zvinozvibatanidza mukugadzirisa, zvinogona kuitwa muhuwandu hwakawanda nekungowedzera huwandu hwezvinhu zvekutanga. Vatsvakurudzi vakaratidza kuti vaigona kupfeka pamusoro nemafirimu ezvinyorwa, izvo zvavanodaidza kuti 2DPA-1.
"Nekufambira mberi uku, isu tine mamorekuru anoronga zvichave nyore kugadzira kuita chinhu chakasimba, asi chakatetepa," anodaro Strano.
Chiedza asi chakasimba
Vatsvakurudzi vakaona kuti chinhu chitsva chinonzi elastic modulus - chiyero chesimba rakawanda rinotora kukanganisa chinhu - iri pakati pechina nekatanhatu yakakura kupfuura iyo yegirazi rebhoti. Vakaona zvakare kuti simba rayo rekuita goho, kana kuti simba rakawanda sei rinotora kuputsa zvinhu, rakapetwa kaviri kupfuura resimbi, kunyange zvazvo zvinhu zvacho zviine chikamu chimwe chete chechitanhatu chekuwanda kwesimbi.
Chimwe chinhu chakakosha che2DPA-1 ndechekuti haipindire kumagasi. Nepo mamwe mapolymer achigadzirwa kubva kumacheni akavharidzirwa ane maburi anotendera magasi kupinda mukati, zvinhu zvitsva zvinogadzirwa kubva kumamonomers anokiya pamwe seLEGO, uye mamorekuru haakwanise kupinda pakati pawo.
"Izvi zvinogona kutibvumira kugadzira ultrathin coatings inogona kudzivirira zvachose mvura kana magasi kubva," anodaro Strano. "Rudzi urwu rwekuvharisa runogona kushandiswa kuchengetedza simbi mumotokari nedzimwe mota, kana zvivakwa zvesimbi."
Strano nevadzidzi vake vava kudzidza zvakadzama kuti iyi polima inokwanisa sei kugadzira mapepa e2D, uye vari kuyedza kushandura magadzirirwo ayo mamorekuru kugadzira mamwe marudzi ezvinyorwa zvitsva.
Tsvagiridzo iyi yakatsigirwa neCentre for Enhanced Nanofluidic Transport (CENT) iyo Energy Frontier Research Center inotsigirwa neUS Dhipatimendi reMagetsi Hofisi yeSainzi, uye Army Research Laboratory.
Chiwanikwa chinobva kuzvinhu zvitsva zvakareruka chakasimba kupfuura simbi: Chinhu chitsva ichi chinokonzerwa nebasa rinofungidzirwa kuti harigoneki: Kugadzira chinhu muzvikamu zviviri — ScienceDaily
Nhau Contact:
Email: [email inodzivirirwa]
Tele: + 86-28-8411-1861