For the first time, Diels-Alder and retro Diels-Alder reactions were evidenced by ¹H NMR spectroscopy and DSC on chitosan based systems. At first, preliminary studies led to structural identification and better understanding of the Diels-Alder reaction. Then, chitosan of 30,000 g/mol and 150,000 g/mol were modified by furfuryl glycidyl ether with 20% substitution degree. The resulting products were cross-linked with bis and trismaleimide crosslinkers to produce films possessing interesting mechanical properties. Unprecedented for chitosan-based films, DMA measurement highlighted retro Diels-Alder between 110 and 130 °C. Films showed interesting hydrophobicity and fat absorption. They also exhibited resistance in acidic media whereas crude chitosan films were dissolved.

首次通过基于壳聚糖的系统的¹ H NMR光谱和DSC证明了Diels-Alder和逆Diels-Alder反应。首先，初步研究导致结构鉴定和对Diels-Alder反应的更好理解。然后，用糠基缩水甘油醚以20％的取代度改性30,000g / mol和150,000g / mol的壳聚糖。所得产物用双和三马来酰亚胺交联剂交联，以产生具有令人感兴趣的机械性能的膜。DMA测量是前所未有的，基于脱乙酰壳多糖的薄膜，可在110至130°C的温度下显示Diels-Alder的逆向旋转。薄膜显示出有趣的疏水性和脂肪吸收。它们在酸性介质中也显示出抗性，而粗制壳聚糖膜则溶解了。