Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, Obregón, Sonora, Mexico.
J Agric Food Chem. 2011 Feb 9;59(3):870-5. doi: 10.1021/jf103364a. Epub 2011 Jan 5.
Cellulose nanofibers from durum wheat straw ( Triticum durum ) were produced and characterized to study their potential as reinforcement fibers in biocomposites. Cellulose was isolated from wheat straw by chemical treatment. Nanofibers were produced via an electrospinning method using trifluoroacetic acid (TFA) as the solvent. The nanofibers were 270 ± 97 nm in diameter. Analysis of the FT-IR spectra demonstrated that the chemical treatment of the wheat straw removed hemicellulose and lignin. XRD revealed that the crystallinity of the cellulose was reduced after electrospinning, but nanofibers remained highly crystalline. The glass transition temperature (T(g) value) of the fibers was 130 °C, higher than that of cellulose (122 °C), and the degradation temperature of the fibers was 236 °C. Residual TFA was not present in the nanofibers as assessed by the FT-IR technique.
从硬质小麦秸秆（ Triticum durum ）中提取的纤维素纳米纤维，并对其进行了特性研究，旨在探索其作为生物复合材料增强纤维的潜力。通过化学处理从小麦秸秆中分离出纤维素。采用三氟乙酸（TFA）作为溶剂，通过静电纺丝法制备纳米纤维。纳米纤维的直径为 270±97nm。傅里叶变换红外光谱（FT-IR）分析表明，小麦秸秆的化学处理去除了半纤维素和木质素。X 射线衍射（XRD）表明，电纺后纤维素的结晶度降低，但纳米纤维仍保持高度结晶。纤维的玻璃化转变温度（T(g)值）为 130°C，高于纤维素（122°C），纤维的降解温度为 236°C。通过傅里叶变换红外光谱（FT-IR）技术评估，纳米纤维中不存在残留的三氟乙酸（TFA）。
