Muaj chemical yog cov tuam tsev tseem ceeb rau kev lag luam niaj hnub. Lawv qhov kev ua tau zoo thiab daim ntawv thov ntau yog dav nyob ntawm cov muaj pes tsawg leeg thiab cov qauv ntawm lawv cov khoom siv hauv nroog. Ntau pawg ntawm cov tshuaj ua kom muaj cov tshuaj sib txawv ntawm lub cev nqaij daim tawv, thiab siv tau dav hauv lub zog, khoom, ua liaj ua teb, thiab lwm thaj teb.
Los ntawm kev saib xyuas tshuaj, cov ntsiab lus tseem ceeb ntawm kev lag luam tshuaj feem ntau yog cov tshuaj organic, inorganic sib txuas, thiab cov sib xyaw ua ke complex. Piv txwv li, yooj yim cov organic cov organic xws li Ofefins zoo li cov ntaub ntawv zoo li cov ntaub ntawv thiab cov roj av thiab polypropylene), roj hmab, thiab fibers. Lawv cov molecular saw ntev thiab qib kev ua txhaum ncaj qha cuam tshuam lub zog thiab tawv ntawm cov khoom kawg. Inorganic tshuaj yog feem ntau cov kua qaub, thiab ntsev, xws li sulfuric acid (haysoh), thiab sodium chloride (NACL). Cov no ua cov catalysts tseem ceeb, neutralizers, thiab elecolytes, feem, thiab ua si lub luag haujlwm tseem ceeb hauv methotrurgy, papermaking, thiab tshuaj cais cov txheej txheem. Tsis tas li ntawd, xws li surfactants (xws li catalysts) feem ntau txuas cov pab pawg ua haujlwm (xws li cov phiaj xwm hydroxyl) kom ua tiav cov pawg ntawm cov tshuaj tiv thaiv lossis cov khoom sib txuam. Nws yog tsim nyog sau tseg tias cov muaj pes tsawg leeg thiab cov tshuaj lom neeg muaj cov tshuaj chemical muaj cov kev cuam tshuam tseem ceeb rau lawv daim ntawv thov. Kev lag luam {{{{}} Cov khoom lag luam feem ntau muaj me me ntawm impurities (xws li cov hlau hnyav (xws li hnyav monomers), txwv lawv siab-}} daim ntawv thov. Reagent - qib los yog hluav taws xob {{11 {}} Piv txwv li, siab-}}}}}}} ≈ than than້ອນ sib npaug (Si 98%) tsuas yog tsim nyog rau cov ntaub ntawv.
Hauv cov ntsiab lus, lub koom haum tseem ceeb ntawm kev lag luam tshuaj tsis tsuas yog txiav txim siab txog lawv cov haujlwm hauv kev tab sis kuj nthuav lawv thaj tsam ntawm molecular los ntawm molecular tsim qauv thiab tswj kev coj dawb huv. Ib qho kev nkag siab tob ntawm cov tshuaj ntawm cov khoom xyaw tseem ceeb yog qhov tseem ceeb rau kev ua kom zoo dua qub cov txheej txheem thiab nce cov khoom ntxiv.
