Nanomaterials Research Group, Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan.
Nanomaterials Research Group, Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan.
Carbohydr Polym. 2015 Jan 22;115:388-93. doi: 10.1016/j.carbpol.2014.09.002. Epub 2014 Sep 7.
We report fabrication of poly (ɛ-caprolactone) (PCL)/cellulose (CEL) nanofiber blends via co-electrospinning for the possible use as biofilters and biosensor strips. Five different ratios of PCL to CEL were fabricated to investigate the wicking behavior. The cellulose acetate (CA) was taken as precursor to make cellulose nanofibers. Double nozzles were employed for jetting constituent polymers toward collector drum independently and resultant nanofibers webs were deacetylated in aqueous alkaline solution to convert CA into CEL as confirmed by FTIR spectra. FTIR further revealed that there is no effect of deacetylation on PCL nanofiber. The morphology of each blend webs under SEM showed uniform and bead-free nanofibers. Wicking behavior for five different ratios of PCL/CEL suggested that increasing CEL ratio in the blend enhanced the wicking front height; however, X-ray diffraction patterns of PCL/CEL showed a slight decrease in crystallinity.
我们通过共静电纺丝制备了聚己内酯（PCL）/纤维素（CEL）纳米纤维混合物，可能将其用作生物过滤器和生物传感器条。我们制备了五种不同比例的 PCL 与 CEL 以研究其吸液行为。采用醋酸纤维素（CA）作为前体来制备纤维素纳米纤维。双喷嘴用于将组成聚合物分别喷射到收集器鼓上，所得纳米纤维网在碱性水溶液中进行脱乙酰化，将 CA 转化为 CEL，这一点通过傅里叶变换红外光谱（FTIR）得到证实。FTIR 进一步表明，脱乙酰化对 PCL 纳米纤维没有影响。SEM 下观察到的各混合物的形态均显示出均匀、无珠状的纳米纤维。五种不同比例的 PCL/CEL 的吸液行为表明，混合物中 CEL 比例的增加会提高吸液前沿高度；然而，PCL/CEL 的 X 射线衍射图谱显示结晶度略有下降。
