Kwenziwa kanjani ipulasitiki?
Ipulasitiki yenziwa ngowoyela, igesi yemvelo ngisho namafutha ezitshalo ngesikhathi kucutshungulwa la mafutha abe eminye imikhiqizo efana nophethiloli. I - ethane ne - propane zakhiwa lapho ziphathwa ngokushisa phakathi nenqubo yokucwengisisa ebizwa ngokuthi i - cracking. Lokhu kuguqula i-Ethane ne-propane zibe i-ethylene ne-propylene ezisetshenziswa nezinye izithako zamakhemikhali ukuze kwakhiwe ama-polymer ayisisekelo salokho okwenziwa ngamapulasitiki.