Polyethylene tereplate (Pet) wani yanki ne na polymer wanda ke da kyakkyawan juriya na sinadarai, narkar da motsi da zafin rana. Polymer ya ƙunshi maimaita raka'a kamar yadda aka nuna a cikin Hoto 1. Kowane ɗayan yana da tsawon lokaci na kimanin 1.09 NM da nauyin kwayar halitta na ~ 200. Lokacin da aka samar da shi daga amsawar terephtha acid da ethylene glycol, an shigar da shi a hannun H- da dama ta -o. Polymerization ya kasance tare da samar da ruwa wanda aka cire a ƙarƙashin zazzabi da aka ɗaukaka da kuma injin. Haka kuma kasancewar ruwa a cikin jihar Molten zai hanzarta zahiri da tsananin tsarin polymer kafin narke mai narkewa ga zaruruwa wajibi ne.

Zobe mai ƙanshi tare da gajeren sarkar alippatic yana sa polymer kwararru kwayar cuta kamar yadda aka kwatanta da wasu aliphatic kamar polyolefin ko polyamode. Rashin motsi na yanki a cikin sarƙoƙin polymer yana haifar da babban kwanciyar hankali. Polymer mai faɗi zai sami matsakaicin adadin maimaita 100 a kowace kwayar cutar polymer kamar 100nm tare da nauyin kwayar cuta kusan 20,000. Manyan matakan polymerization suna samar da ingantacciyar zargin zarguwa amma narkewar danko da kwanciyar hankali na haifar da lalata kayan danshi. Ana yin ma'aunin matsakaita na polymerization ko dai ta hanyar danko na gyaran ƙwayar cuta (ta hanyar auna matsin lamba na cirewa) ko danko mai narkewa a cikin abin da ya dace. Latterarshe yana gwargwado na sarkar polymer da aka sani da ƙimar fiber na fiber na yau da kullun shine 0.6 DL / g a cikin subsol da tetrachloroethane. THE IV A cikin hanyoyin da ke tattare da mv (dankanin dankalin turawa) na polymer ta alamar yadda alamar bisum (daidaituwa 1).