Grape cane is a necessary annual by-product of a vineyard. It is available in large quantities, an estimated 9 million tons (oven-dry weight) annually, having approximately 18 million acres worldwide. There is currently no substantial commercial utilization of grape cane fiber, with the majority incinerated. The main objective of the current study is to characterize grape cane fibers extracted at different alkali treatment concentrations and to determine the optimum treatment concentrations that can produce better fiber properties. The fibers were treated at 1, 3, 5 and 7 wt% of sodium hydroxide (NaOH) at 100 °C for 2 h. The grape cane fibers can be categorized into two types, namely outer bark (OB) and inner bark (IB) fiber after the treatment process. Aspect ratio, chemical composition, crystallinity, changes in the functional groups using FTIR, and tensile properties of OB and IB fibers were investigated. The results show that these two fibers demonstrated dissimilar anatomical structures, cell types, cell dimensions, and tensile properties. Meanwhile, the chemical compositions and crystallinity are equivalent to each other. The overall properties of both fibers were found superior at the lower treatment concentrations.

葡萄藤是葡萄园每年必要的副产品。它有大量供应，估计每年有900万吨（烤箱干重），在全球拥有约1800万英亩。目前，葡萄藤纤维没有大量的商业利用，大部分被焚化。当前研究的主要目的是表征在不同碱处理浓度下提取的藤条纤维，并确定可以产生更好纤维特性的最佳处理浓度。在1、2、3、5、5和7 wt％的氢氧化钠（NaOH）中将纤维处理2小时。经过处理后，葡萄藤纤维可分为两类，即外皮（OB）和内皮（IB）。长宽比，化学组成，结晶度，使用FTIR的官能团变化，研究了OB和IB纤维的拉伸性能。结果表明，这两种纤维表现出不同的解剖结构，细胞类型，细胞尺寸和拉伸性能。同时，化学组成和结晶度彼此相等。发现在较低的处理浓度下，两种纤维的整体性能均优越。