Polyamide (PA) bụ nke a na-akpọkarị naịlọn, na ogologo naịlọn carbon carbon na-ezo aka na ụdị nylon nwere otu 10 ma ọ bụ karịa methylene n'etiti njikọ amide dị n'akụkụ isi nke macromolecule, dị ka PA11, PA12, PA1010, PA1212, PA1012, wdg. N'ime ha, PA610 na P...
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