Oxygen absorbents yog cov khoom siv tshuaj los yog cov khoom sib xyaw uas xaiv los nqus lossis hnov mob kom tshem tawm cov pa oxygen ntawm ib puag ncig. Lawv muaj kev siv dav hauv kev khaws cia zaub mov, chaw muag tshuaj, kev tiv thaiv hluav taws xob tiv thaiv, thiab kev txuag kab lis kev cai. Lawv lub luag haujlwm tseem ceeb yog siv cov pa oxygen los ntawm cov tshuaj tiv thaiv tshuaj, yog li txo cov pa oxygen concentration thiab inhibiting oxidation cov tshuaj tiv thaiv.
Los ntawm kev xav tshuaj, oxygen absorbents feem ntau yog ua raws li cov tshuaj tiv thaiv redox ntawm kev txo cov tshuaj thiab cov pa oxygen. Feem ntau hom muaj xws li hlau-raws li absorbents, sulfites, thiab organic compounds. Hlau -raws li absorbents (xws li cov hmoov hlau txo) hnov mob nrog oxygen los tsim cov hlau oxides, ua rau lawv cov kev xaiv zoo tshaj plaws thiab zoo tshaj plaws, siv dav hauv cov khoom ntim khoom noj. Sulfites (xws li sodium metabisulfite) tshem tawm cov pa oxygen los ntawm kev tso cov sulfur dioxide thiab feem ntau yog siv rau hauv kev ntim tshuaj. Nyob rau hauv xyoo tas los no, cov organic polymers tshiab thiab hlau complex absorbents tau txais kev saib xyuas ntau ntxiv vim lawv cov kev tswj tau thiab kev phooj ywg ib puag ncig; Piv txwv li, kev sib koom ua ke uas muaj cov hlau hloov pauv tuaj yeem ntes cov pa oxygen molecules los ntawm ligand exchange tshua.
Nyob rau ntawm daim ntawv thov, cov pa oxygen absorbent yog qhov tseem ceeb rau kev ncua cov khoom txee lub neej. Hauv kev lag luam khoom noj khoom haus, oxygen absorbers, thaum siv nrog deoxygenated ntim, zoo tiv thaiv roj rancidity thiab microbial loj hlob. Hauv kev lag luam tshuaj, tshwj xeeb tshaj yog rau cov pa oxygen- cov tshuaj txhaj tshuaj thiab nqus tau pa, cov pa oxygen absorbers tswj qhov chaw tsis muaj menyuam thiab tiv thaiv cov tshuaj degradation. Hauv cov khoom siv hluav taws xob, cov ntaub ntawv no yog siv rau kev nqus oxygen thiab kev tiv thaiv noo noo, tiv thaiv cov khoom siv los ntawm oxidative corrosion. Tsis tas li ntawd, cov tsev khaws puav pheej thiab cov ntaub ntawv khaws cia siv cov pa oxygen absorbers los tsim cov pa oxygen tsawg tsawg, ua rau cov txheej txheem kev laus ntawm cov khoom qub thiab cov ntaub ntawv.
Hais txog kev tsim kho thev naus laus zis, niaj hnub oxygen absorbers tau hloov zuj zus mus rau kev ua haujlwm siab dua, kev phooj ywg ib puag ncig, thiab kev ua haujlwm ntau. Kev taw qhia ntawm nanotechnology tau nce cov tshuaj tiv thaiv thaj tsam ntawm thaj chaw thiab qhov nqus nqus, thaum txoj kev loj hlob ntawm cov khoom siv biodegradable tau daws cov teeb meem ntawm ib puag ncig cov pa phem ntawm cov tsoos absorbers. Ntse absorbers tuaj yeem qhia cov qib oxygen noj los ntawm kev hloov xim, ua kom zoo dua rau cov neeg siv kev paub. Nyob rau yav tom ntej, nrog rau kev nce qib hauv cov ntaub ntawv tshawb fawb, cov pa oxygen absorbers yuav ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw tshiab (xws li kev tshawb nrhiav chaw thiab kev sib sib zog nqus- cov khoom siv dej hiav txwv), muab cov kev daws teeb meem zoo rau kev tswj cov pa oxygen- qhov chaw muaj kev kub ntxhov.
