The Interface Strengthening of Multi-Walled Carbon Nanotubes/Polylactic Acid Composites via the In-Loop Hybrid Manufacturing Method

Abstract

In this study, a new in-loop hybrid manufacturing method is proposed for fabricating multi-walled carbon nanotube (MWCNTs)/polylactic acid (PLA) composites. Molecular dynamics simulations were conducted in conjunction with experiments to reveal the mechanism of the proposed method for improving the interfacial performance of MWCNTs/PLA. The superposed gradients in the PLA chain activity and conformation due to the plasma-actuating MWCNTs promoted intermolecular interaction and infiltration between the MWCNTs and PLA chains, forming an MWCNTs-stress-transfer bridge in the direction perpendicular to the interlayer interface, and finally enhancing the performance of the composites. The experimental results indicated that the interfacial shear strength of the specimen fabricated using the proposed method increased by 30.50% to 43.26 MPa compared to those without the addition of MWCNTs, and this value was 4.77 times higher than that of the traditional manufacturing method, demonstrating the effectiveness of the proposed method in improving the interfacial properties of MWCNTs/PLA composites.

Research on the Safety Evaluation Method for Quayside Container Cranes Based on the Best–Worst Method–Pythagorean Fuzzy VIKOR Approach

“…Concurrently, with the ongoing research and development in new technologies, the crane manufacturing industry is progressively incorporating an array of innovative processes, materials, and technological applications. The research findings of Li [1] and Pandeya [2] demonstrate substantial potential and prospects for application in future crane manufacturing endeavors.…”

“…Acquiring the Optimal Solution When the alternative with the smallest compromise value Q i , denoted as X (1) , satisfies the following two conditions, it is considered as the optimal solution: Condition 1: Q(X (2) ) − Q(X (1) ) ≥ DQ, where X (2) represents the alternative with the second smallest compromise value Q i when sorted in ascending order.…”

“…(b) If only Condition 2 is not satisfied, then both the alternatives X (1) and X (2) (the ones with the smallest and the second smallest Q i values, respectively) are considered as optimal solutions. In this case, both X (1) and X (2) are the compromise solutions.…”