纤维素纳米纤丝/丙烯酸树脂制备柔性有机发光二极管基材的研究

Study on the Preparation of Flexible Organic Light-emitting Diode Substrates Based on Cellulose Nanofibril/Acrylic Resin

关键词:  纤维素纳米纤丝  ABPE-10树脂  丝光化  涂布  Pickering乳液

Key Words:cellulose nanofibril  acrylic resin ABPE-10  mercerization  coating  Pickering emulsion

摘要:以漂白蔗渣浆为原料，通过机械研磨法制备了纤维素纳米纤丝（CNF）。通过流延法将CNF制备成纳米纸基薄膜（CNP），并将未干燥的CNP进行丝光化处理得到丝光化纳米纸基薄膜（Me-CNP）。分别在CNP和Me-CNP表面涂布丙烯酸树脂（ABPE-10）制备了涂布纳米纸（CNP-Co）和涂布丝光化纳米纸（Me-CNP-Co） 2种纳米纸基薄膜。用CNF稳定ABPE-10制备Pickering乳液后，采用流延法制备了Pickering乳液法纳米纸（CNP-P）。探究不同制备方式对提高纳米纸基薄膜光学性能、热稳定性能和水阻隔性能的影响。结果表明，丝光化处理可以提高CNP的机械韧性；表面涂布和Pickering乳液法制备的纳米纸基薄膜的透明度均大于85%，热分解温度均提高至345 ℃以上，水接触角均大于90°。此外，纳米纸基薄膜均具有良好的机械柔性。

Abstract:In this study， bleached bagasse pulp was used as raw material to prepare cellulose nanofibril （CNF） by mechanical grinding method. CNF was prepared into nano paper-based films （CNP） by flow-casting， and the undried CNP was mercerized to obtain mercerized CNP （Me-CNP）. Two kinds of nano paper-based films were prepared by coating acrylic ABPE-10 on the surface of CNP and Me-CNP to prepare CNP-Co and Me-CNP-Co， respectively. After the Pickering emulsion was prepared by stabilizing ABPE-10 with CNF， CNP-P was prepared by the flow-casting method and Pickering emulsion method. By comparing the optical properties， thermal stability and water barrier properties of nano paper-based films prepared by different methods， it was found that the mechanical toughness of CNP could be improved by mercerization treatment. The transparency of both nano paper-based films prepared by surface coating and Pickering emulsion method was more than 85%， the thermal decomposition temperature was more than 345 ℃， and the water contact angle was greater than 90°. Additionally， all the nano paper-based films exhibited good mechanical flexibility.