Toalá C Uitz, Prokhorov E, Barcenas G Luna, Landaverde M A Hernández, Limón J M Yáñez, Gervacio-Arciniega J J, de Fuentes O Arias, Tapia A M Garay
Nanosciences Program, Cinvestav del IPN, Mexico; CINVESTAV del IPN, Unidad Querétaro, Mexico.
CINVESTAV del IPN, Unidad Querétaro, Mexico.
Int J Biol Macromol. 2023 Oct 1;250:126251. doi: 10.1016/j.ijbiomac.2023.126251. Epub 2023 Aug 9.
Herein, we report the high apparent piezoelectric coefficient for chitosan-poly(3-hydroxybutyrate) (CS-PHB) blend films. The structure of chitosan-poly(3-hydroxybutyrate) (CS-PHB) blend films, exploiting characteristics such as dielectric, polarization, apparent piezoelectric properties, and their dependencies on the composition, were investigated. Based on the results of XRD, SEM, FTIR, PFM, and dielectric spectroscopy measurements, the structure of CS-PHB blend films has been proposed, which consists of spheric-like inclusion formed by precipitating isotactic-PHB interface layer, which consists of syndiotactic-PHB hydrogen bonding with CS, and CS matrix. The synergistic effects of piezoelectricity and electrostriction help explain the high value of the apparent piezoelectric coefficient (d) obtained in the blend film with 13 wt% of PHB (d ≈ 200 pC/N). The investigated CS-PHB blend films are a good candidate for tissue engineering applications.
在此，我们报道了壳聚糖-聚（3-羟基丁酸酯）（CS-PHB）共混膜具有较高的表观压电系数。研究了壳聚糖-聚（3-羟基丁酸酯）（CS-PHB）共混膜的结构，探讨了其介电、极化、表观压电性能等特性以及它们对组成的依赖性。基于X射线衍射（XRD）、扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）、压电响应力显微镜（PFM）和介电谱测量结果，提出了CS-PHB共混膜的结构，该结构由等规-PHB界面层沉淀形成的球状夹杂物组成，等规-PHB界面层由间规-PHB与CS的氢键以及CS基质构成。压电性和电致伸缩的协同效应有助于解释在含13 wt% PHB的共混膜中获得的高表观压电系数（d）值（d≈200 pC/N）。所研究的CS-PHB共混膜是组织工程应用的良好候选材料。
