Inayiloni noma iPolyamide wumndeni omkhulu kakhulu, iPolyamide 6.6 kanye no-6 yayisetshenziswa kakhulu entanjeni yezimboni. Uma sikhuluma ngamakhemikhali, i-Polyamide 6 iyi-monomer eyodwa enama-athomu ekhabhoni ayi-6. I-Polyamide 6.6 yenziwe ngama-monomer angu-2 anama-athomu e-carbon angu-6 lilinye, okuholela ekuqokweni kwe-6.6.