Abstract A research is reported on the nanomechanics and tribology of the Arboblend V2 Nature biopolymer (a 100% bio-based material, biodegradable, or resistant depending of application), being a mixture of different biopolymers such as lignin, polylactic acid, cellulose, biopolyamides, and other natural additives. The specimens were made by an industrial-scale injection molding machine. The nanoindentation characterization have unveiled that an increase in processing temperature from 160°C to 170°C produces a rise in hardness and elastic modulus of ∼20%. Tribological characterization against a bearing-steel counterface has shown that for both processing temperatures, the increase of the applied load or the increase of sliding speed will produce an increase of the friction coefficient (µ) and wear. At an applied load of 1 N (contact pressure of 104 MPa) and tracks in a direction perpendicular to the surface textured lines, the lowest µ ∼ 0.148 are for samples made T = 170°C, while for tracks parallel to the textured lines, the lowest µ ∼ 0.059 is obtained for samples made at T = 160°C. Experiments made at different ambient humidity have established that friction coefficient is higher at 0% RH or at 75% RH than at 33% RH. Our results show that the biopolymers Arboblend V2 Nature is a candidate to substitute some popular fossil-based thermoplastics in numerous tribological industrial applications.

中文翻译：

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木质素基生物聚合物的摩擦学和纳米力学性能

摘要 一项关于 Arboblend V2 Nature 生物聚合物（100% 生物基材料，可生物降解或抗性取决于应用）的纳米力学和摩擦学的研究报告，它是不同生物聚合物的混合物，如木质素、聚乳酸、纤维素、生物聚酰胺和其他天然添加剂。样品由工业规模的注塑机制成。纳米压痕表征表明，加工温度从 160°C 增加到 170°C 会导致硬度和弹性模量增加约 20%。轴承钢配合面的摩擦学特性表明，对于两种加工温度，施加载荷的增加或滑动速度的增加都会导致摩擦系数 (μ) 和磨损的增加。在施加 1 N 的负载（104 MPa 的接触压力）和垂直于表面纹理线的方向上的轨迹下，最低的 µ ∼ 0.148 用于 T = 170°C 的样品，而对于平行于纹理线的轨迹，最低的 µ ∼ 0.059 是在 T = 160°C 下制成的样品中获得的。在不同环境湿度下进行的实验已经确定，0% RH 或 75% RH 下的摩擦系数高于 33% RH 下的摩擦系数。我们的结果表明，生物聚合物 Arboblend V2 Nature 是许多摩擦学工业应用中一些流行的化石基热塑性塑料的替代品。在不同环境湿度下进行的实验已经确定，0% RH 或 75% RH 下的摩擦系数高于 33% RH 下的摩擦系数。我们的结果表明，生物聚合物 Arboblend V2 Nature 是许多摩擦学工业应用中一些流行的化石基热塑性塑料的替代品。在不同环境湿度下进行的实验已经确定，0% RH 或 75% RH 下的摩擦系数高于 33% RH 下的摩擦系数。我们的结果表明，生物聚合物 Arboblend V2 Nature 是许多摩擦学工业应用中一些流行的化石基热塑性塑料的替代品。