Zapulasitiki zili ponseponse m'moyo wathu watsiku ndi tsiku, komabe zimabwera mosiyanasiyana. Zida zapulasitiki zosiyanasiyana zimawonetsa kusiyana kwakukulu pakuchita, kugwiritsa ntchito, ndi chitetezo. Kumvetsetsa kusiyana kumeneku kungakuthandizeni kusankha ndi kugwiritsa ntchito zinthu zapulasitiki mwanzeru.
Choyamba, mapulasitiki wamba akhoza kugawidwa m'magulu awiri: thermoplastics ndi thermosetting plastics. Thermoplastics (monga polyethylene (PE), polypropylene (PP), ndi polystyrene (PS)) imafewetsa ndi kukonzanso ikatenthedwa ndi kuumitsanso ikazizira, kuzipangitsa kuti zitheke kuberekana komanso kukhala zoyenera kuzinthu zonse zomwe zimatha kutaya komanso zolimba monga zotengera ndi zotengera. Mapulasitiki a thermosetting (monga ma phenolic resins ndi epoxy resins) sangathe kusungunuka akachiritsidwa. Amakhala ndi mphamvu zolimbana ndi kutentha kwambiri ndipo amagwiritsidwa ntchito nthawi zambiri pamapulogalamu omwe amafunikira-kukhazikika kwanthawi yayitali, monga kutchinjiriza magetsi ndi zida zamagalimoto.
Chachiwiri, katundu wamankhwala ndi chitetezo cha mapulasitiki osiyanasiyana amasiyana kwambiri. Mwachitsanzo, polyethylene terephthalate (PET) imagwiritsidwa ntchito kwambiri m'mabotolo a zakumwa, koma kugwiritsa ntchito nthawi yayitali-kutha kutulutsa zinthu zovulaza. High-kachulukidwe polyethylene (HDPE) ndi dzimbiri-siyimva ndipo siola-poizoni, kupangitsa kuti ikhale yoyenera kusungirako mabokosi ndi mapaipi. Polyvinyl chloride (PVC) imakhala ndi zopangira mapulasitiki ndipo imatha kutulutsa zinthu zovulaza ikakumana ndi kutentha kwambiri kapena mafuta, motero nthawi zambiri sagwiritsidwa ntchito popanga zakudya.
Kuphatikiza apo, mawonekedwe apulasitiki amawonetsanso momwe angagwiritsire ntchito. Polycarbonate (PC) imapereka kuwonekera kwambiri komanso kukana mwamphamvu ndipo imagwiritsidwa ntchito kwambiri pamagalasi agalasi ndi zida zoteteza. Polytetrafluoroethylene (PTFE, yomwe imadziwikanso kuti Teflon) imalimbana kwambiri ndi mankhwala ndipo imagwiritsidwa ntchito kwambiri popaka -zopaka zomata.
Mwachidule, kusiyana pakati pa mankhwala apulasitiki sikumangowoneka mwa mtundu wa zinthu, komanso mu njira zopangira, kukana kutentha, kukhazikika kwa mankhwala, ndi ntchito zachilengedwe. Ogula asankhe mankhwala apulasitiki oyenera malinga ndi zosowa zawo zenizeni ndikuyang'anira zoletsa zake kuti atsimikizire chitetezo ndi kukhazikika.
