Department of 206, Xi'an High-technology Institute, Xi'an 710025, China.
The Forth Academy of CASC, Xi'an 710025, China.
Molecules. 2023 Feb 14;28(4):1810. doi: 10.3390/molecules28041810.
Hydroxyl-terminated polybutadiene (HTPB)-based piezoelectric polymer (m-HTPB) is prepared for the first time by functionalized branch chain modification strategy. In the presence of HTPB with >98.8% cis-1,4 content, the C=C bond partly breaks down, and functionalized acetylferrocene groups are introduced to the cis-1,4 polybutadiene branch chain, retaining the high cis-1,4 content of HTPB. The whole process is conducted under mild conditions, without complicated manipulations. The microstructure and molecular weight of m-HTPB are characterized by Fourier-transform infrared (FTIR) spectra, H or C nuclear magnetic resonance spectrum (NMR), and gel permeation chromatography (GPC). The thermal properties of HTPB and m-HTPB are determined by differential scanning calorimetry (DSC). Electrochemical investigations reveal that m-HTPB exhibits higher conductance compared with HTPB. The m-HTPB flexible piezoelectric polymer is further used for in situ and real-time pressure monitoring. This simple and effective strategy provides a promising polymeric material for flexible piezoelectric sensors.
羟基封端聚丁二烯（HTPB）基压电机敏聚合物（m-HTPB）首次通过官能化支链改性策略制备。在具有 >98.8%顺-1,4 含量的 HTPB 存在下，C=C 键部分断裂，并将官能化的乙酰二茂铁基团引入顺-1,4 聚丁二烯支链中，保持 HTPB 的高顺-1,4 含量。整个过程在温和条件下进行，无需复杂的操作。m-HTPB 的微观结构和分子量通过傅里叶变换红外（FTIR）光谱、H 或 C 核磁共振谱（NMR）和凝胶渗透色谱（GPC）进行表征。通过差示扫描量热法（DSC）测定 HTPB 和 m-HTPB 的热性能。电化学研究表明，m-HTPB 与 HTPB 相比表现出更高的电导率。m-HTPB 柔性压电机敏聚合物进一步用于原位和实时压力监测。这种简单有效的策略为柔性压敏传感器提供了一种有前途的聚合物材料。
