Abstract
Under microwave irradiation, the reaction time of PMDA and melamine in DMSO was shortened to just 30 minutes. Structure of the obtained polyimide was characterized by FTIR, and its thermal stability was confirmed by TGA analysis. The longer reaction time in DMSO solution up to 30 h at high temperature was required.
Highlights
The reaction time of PMDA and melamine in DMSO was shortened to just 30 minutes
Structure of the obtained polyimide was characterized by FTIR, and its thermal stability was confirmed by TGA analysis
Preparation of polyimide from melamine and pyromellitic dianhydride by microwave irradiation
Summary
Dưới tác dụng của vi sóng, thời gian phản ứng xác định bằng TGA. Bằng phương pháp gia nhiệt giữa PMDA và melamine trong DMSO được rút thông thường, phản ứng giữa PMDA và melamine ngắn chỉ còn 30 phút. Cấu trúc của polyimide trong DMSO cần kéo dài đến 30 giờ. Được xác định bằng FTIR và tính chất nhiệt được. Từ khóa: dianhydrid pyromellitic, melamin, polyimid, vi sóng, TGA
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