Cov txheej txheem:
Video: Yuav ua li cas polymers tsim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum ntau cov molecules ntawm ib qho yooj yim compound koom ua ke, cov khoom yog hu ua a polymer thiab cov txheej txheem polymerization. Cov yooj yim tebchaw uas nws cov molecules koom ua ke los ua tus polymers hu ua monomers. Cov polymer yog ib txoj saw ntawm atoms, muab ib tug txha caj qaum, uas atoms los yog pab pawg neeg ntawm atoms koom.
Ib yam li ib tug yuav nug, ua li cas cov polymers tsim?
Polymers yog tsim los ntawm ob txoj kev tseem ceeb hu ua ntxiv thiab condensation polymerization . Ntxiv rau, polymerization , tus pib (los yog catalyst) reacts nrog ib tug pib monomer. Nyob rau hauv condensation polymerization , monomer nrog rau H (hydrogen) atom raug khi nrog lub monomer nrog OH (oxygen-hydrogen) atoms raug.
Ib yam li ntawd, cov polymers ua haujlwm li cas? Thaum monomers koom nrog lwm cov monomers los ntawm cov txheej txheem ntawm kev tsim cov ntawv cog lus, lawv tsim cov molecules loj, hu ua polymers . Yog tias nws txuas nrog peb lossis ntau dua molecules ces peb-dimensional, cross-linked structures tuaj yeem tsim [qhov chaw: Innovate Us]. Polymers tuaj yeem tshwm sim, lossis peb tuaj yeem tsim lawv.
Hauv qhov no, cov polymers tuaj ntawm qhov twg thiab lawv ua li cas?
Polymers feem ntau yog ua ntawm roj av, tab sis tsis tas li. Ntau polymers yog ua ntawm repeat units muab tau los ntawm natural gas los yog coal los yog crude roj. Tab sis lub tsev thaiv rov ua dua tuaj yeem qee zaum ua los ntawm cov ntaub ntawv txuas mus ntxiv xws li polylactic acid los ntawm pob kws lossis cellulosics los ntawm paj rwb linters.
Yuav ua li cas cov yas ua ib kauj ruam?
Ua cov yas
- Npaj cov khoom nyoos thiab monomers.
- Ua cov tshuaj tiv thaiv polymerization.
- Ua cov polymers rau hauv qhov kawg polymer resins.
- Tsim cov khoom tiav.
Pom zoo:
Cov monomers thiab polymers sib txuas li cas?
Monomers yog cov molecules me me, feem ntau cov organic, uas tuaj yeem koom nrog lwm cov molecules zoo sib xws los tsim cov molecules loj heev, lossis cov polymers. Tag nrho cov monomers muaj peev xwm tsim cov tshuaj tiv thaiv rau tsawg kawg yog ob lub monomer molecules. Polymers yog chains nrog ib tug unspecified tooj ntawm monomeric units
Vim li cas cov proteins polymers?
Cov proteins raug suav tias yog cov polymers vim tias muaj cov polymerization ntawm cov amino acids thiab yog li, cov amino acids yog monomers ntawm cov proteins thiab peptides. Hauv cov protein molecule, amino acids tau tuav ua ke ntawm peptide bonds. Amino acids tseem hu ua 'tsev blocks' ntawm cov proteins
Yuav ua li cas monomers tsim polymers?
Monomers yog cov molecules me me uas tuaj yeem koom ua ke hauv kev rov ua dua tshiab los tsim ntau cov molecules hu ua polymers. Monomers tsim cov polymers los ntawm kev tsim cov tshuaj bonds los yog khi supramolecularly los ntawm cov txheej txheem hu ua polymerization
Yuav ua li cas compound yuav tsim yog Aluminium thiab oxygen tau ua ke?
Aluminium tuaj yeem hnov mob nrog cov pa oxygen los tsim cov txhuas oxide (Al_2O_3)
Yuav ua li cas muaj pes tsawg tus tooj liab atoms koj yuav tsum tau kab ntawm ib sab los tsim ib kab 1'm ntev?
Los ntawm kev sib piv, lub ntiaj teb cov pej xeem tsuas yog hais txog 7? 109 neeg. Yog tias koj tuaj yeem ua kab 100,000,000 tooj liab atoms ib sab, lawv yuav tsim ib txoj kab ntev li 1 cm