期刊
POLYMERS
卷 12, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/polym12061384
关键词
antifungal activity; TiO2; electrospinning; electrospraying; PHB; Phaeomoniella chlamydospora; esca
资金
- Bulgarian National Science Fund [KP-06-OPR03/2, 14.12.2018]
Esca is a type of grapevine trunk disease that severely affects vine yield and longevity.Phaeomoniella chlamydospora(P. chlamydospora) is one of the main fungi associated with esca. The aim of the present study was to obtain eco-friendly materials with potential antifungal activity againstP. chlamydosporabased on biodegradable and biocompatible poly(3-hydroxybutyrate) (PHB), nanosized TiO2-anatase (nanoTiO(2)), and chitosan oligomers (COS) by conjunction of electrospinning and electrospraying. One-pot electrospinning of a suspension of nanosized TiO(2)nanoparticles in PHB solution resulted in materials in which TiO(2)was incorporated within the fibers (design type in). Simultaneous electrospinning of PHB solution and electrospraying of the dispersion of nanosized TiO(2)in COS solution enabled the preparation of materials consisting of PHB fibers on which TiO(2)was deposited on the fibers' surface (design type on). Several methods including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction analysis (XRD), thermogravimetric analyses (TGA) and water contact angle were utilized to characterize the obtained materials. The incorporation of nanoTiO(2)in the PHB fibers, as well as nanoTiO(2)deposition onto the surface of the PHB fibers resulted in increased roughness and hydrophobicity of the obtained composite fibrous materials. Moreover, TiO2-on-PHB fibrous material exhibited complete inhibition of fungal growth ofP. chlamydospora. Therefore, the obtained eco-friendly fibrous materials based on PHB and nanoTiO(2)are promising candidates for protection against esca in agriculture.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据