Lin Ziyu, Cao Ning, Sun Zhonghui, Li Wenying, Sun Yirong, Zhang Haibo, Pang Jinhui, Jiang Zhenhua
Key Laboratory of High Performance Plastics (Jilin University), Ministry of Education, National & Local Joint Engineering Laboratory for Synthetic Technology of High Performance Polymer, College of Chemistry, Jilin University, Jilin University, Changchun, 130012, P. R. China.
Adv Sci (Weinh). 2022 Jan;9(1):e2103706. doi: 10.1002/advs.202103706. Epub 2021 Nov 11.
Confined polymerization is an effective method for precise synthesis, which can further control the micro-nano structure inside the composite material. Polyaniline (PANI)-based composites are usually prepared by blending and original growth methods. However, due to the strong rigidity and hydrogen bonding of PANI, the content of PANI composites is low and easy to agglomerate. Here, based on confined polymerization, it is reported that polyaniline /polyether ether ketone (PANI/PEEK) film with high PANI content is synthesized in situ by a one-step method. The micro-nano structure of the two polymers in the confined space is further explored and it is found that PANI grows in the free volume of the PEEK chain, making the arrangement of the PEEK chain more orderly. Under the best experimental conditions, the prepared 16 µm-PANI/PEEK film has a dielectric constant of 205.4 (dielectric loss 0.401), the 75 µm-PANI/PEEK film has a conductivity of 3.01×10 S m . The prepared PANI/PEEK composite film can be further used as electronic packaging materials, conductive materials, and other fields, which has potential application prospects in anti-static, electromagnetic shielding materials, corrosion resistance, and other fields.
受限聚合是一种精确合成的有效方法，它可以进一步控制复合材料内部的微纳结构。聚苯胺（PANI）基复合材料通常通过共混和原位生长方法制备。然而，由于聚苯胺具有很强的刚性和氢键作用，聚苯胺复合材料的含量较低且容易团聚。在此，基于受限聚合，报道了通过一步法原位合成高聚苯胺含量的聚苯胺/聚醚醚酮（PANI/PEEK）薄膜。进一步探究了受限空间中两种聚合物的微纳结构，发现聚苯胺在聚醚醚酮链的自由体积中生长，使聚醚醚酮链的排列更加有序。在最佳实验条件下，制备的16 µm厚的PANI/PEEK薄膜的介电常数为205.4（介电损耗0.401），75 µm厚的PANI/PEEK薄膜的电导率为3.01×10 S m 。制备的PANI/PEEK复合薄膜可进一步用作电子包装材料、导电材料等领域，在抗静电、电磁屏蔽材料、耐腐蚀等领域具有潜在的应用前景。
