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High β-phase Poly(vinylidene fluoride) Using a Thermally Decomposable Molecular Splint
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2022-09-25 , DOI: 10.1002/aelm.202200279 Jinwoo Choi 1 , Kyuho Lee 2 , Minhwan Lee 3 , Taebin Kim 2 , Sangwon Eom 1 , Jae Hyun Sim 4 , Won Bo Lee 3 , YongJoo Kim 5 , Cheolmin Park 2 , Youngjong Kang 1, 6
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2022-09-25 , DOI: 10.1002/aelm.202200279 Jinwoo Choi 1 , Kyuho Lee 2 , Minhwan Lee 3 , Taebin Kim 2 , Sangwon Eom 1 , Jae Hyun Sim 4 , Won Bo Lee 3 , YongJoo Kim 5 , Cheolmin Park 2 , Youngjong Kang 1, 6
Affiliation
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An additive, 1,4-butadiene sulfone (BDS), which generates H2SO3 by in situ thermal retro-Diels-Alder decompositions, is used for preparing high β-phase polyvinylidene fluoride (PVDF) films. Because of preferential multiple non-covalent interactions of H2SO3 with all-trans configuration of PVDF, β-phase PVDF is spontaneously induced without mechanical drawing and/or extensive thermal annealing process. PVDF films cast from PVDF/BDS/water solutions exhibit high β-phase content (fβ = 95%) when the BDS concentration is only cBDS = 1.0 wt%, which is confirmed by polarized optical microscopy (POM), SEM, Fourier transform infrared spectroscopy (FT-IR), differential scan calorimetry (DSC), and 2D grazing incidence wide-angle X-ray scattering (GIWAXS). Because of the high β-phase content, PVDF films prepared by using BDS exhibit excellent ferroelectric and piezoelectric properties (Ec = 50 MV/m, Pr = 5 µC/cm2, and d33 = ≈-25 pm/V). Furthermore, a triboelectric nanogenerator (TENG) developed with high β-phase PVDF film exhibits enhanced performance as 2.5 times higher than neat PVDF film in output charge density, allowing reliable operation of conventional electronic devices.
中文翻译：
使用热分解分子夹板的高β相聚偏二氟乙烯
添加剂 1,4-丁二烯砜 (BDS) 可通过原位热逆狄尔斯-阿尔德分解生成 H 2 SO 3，用于制备高 β 相聚偏二氟乙烯 (PVDF) 薄膜。由于 H 2 SO 3与 PVDF 的全反式构型的优先多重非共价相互作用，无需机械拉伸和/或广泛的热退火过程即可自发诱导 β 相 PVDF。当BDS浓度 仅为c BDS = 1.0 wt%，这通过偏光光学显微镜 (POM)、SEM、傅里叶变换红外光谱 (FT-IR)、差示扫描量热法 (DSC) 和二维掠角广角 X 射线散射 (GIWAXS) 得到证实。由于 β 相含量高，使用 BDS 制备的 PVDF 薄膜表现出优异的铁电和压电性能（E c = 50 MV/m，P r = 5 µC/cm 2，d 33 = ≈-25 pm/V） . 此外，采用高 β 相 PVDF 薄膜开发的摩擦纳米发电机 (TENG) 在输出电荷密度方面表现出比纯 PVDF 薄膜高 2.5 倍的增强性能，使传统电子设备能够可靠运行。
更新日期：2022-09-25
中文翻译：
使用热分解分子夹板的高β相聚偏二氟乙烯
添加剂 1,4-丁二烯砜 (BDS) 可通过原位热逆狄尔斯-阿尔德分解生成 H 2 SO 3，用于制备高 β 相聚偏二氟乙烯 (PVDF) 薄膜。由于 H 2 SO 3与 PVDF 的全反式构型的优先多重非共价相互作用，无需机械拉伸和/或广泛的热退火过程即可自发诱导 β 相 PVDF。当BDS浓度 仅为c BDS = 1.0 wt%，这通过偏光光学显微镜 (POM)、SEM、傅里叶变换红外光谱 (FT-IR)、差示扫描量热法 (DSC) 和二维掠角广角 X 射线散射 (GIWAXS) 得到证实。由于 β 相含量高，使用 BDS 制备的 PVDF 薄膜表现出优异的铁电和压电性能（E c = 50 MV/m，P r = 5 µC/cm 2，d 33 = ≈-25 pm/V） . 此外，采用高 β 相 PVDF 薄膜开发的摩擦纳米发电机 (TENG) 在输出电荷密度方面表现出比纯 PVDF 薄膜高 2.5 倍的增强性能，使传统电子设备能够可靠运行。
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