@article{LI2025, 
author = {HaoYi LI and XinZhe TIAN and SiYuan GE and DongMing MA and WeiMin YANG and XiaoDong XU},
title = {Influence of the melt electrowriting process parameters on poly (ε-caprolactone) (PCL) scaffold thickness},
year = {2025},
journal = {Journal of Beijing University of Chemical Technology (Natural Science Edition)},
volume = {52},
number = {6},
pages = {67-74},
keywords = {melt electrowriting, single-factor experiment, scaffold thickness},
url = {https://www.sciopen.com/article/10.13543/j.bhxbzr.2025.06.008},
doi = {10.13543/j.bhxbzr.2025.06.008},
abstract = {This study investigated the effects of varying temperature, voltage, air pressure, collection speed, collection height, and nozzle inner diameter on scaffold thickness using poly (ε-caprolactone)(PCL) through single-factor experiments. A fiber layer packing index (Fp) was defined to quantify the tightness of the fiber arrangement or interlayer bonding. Experimental results revealed that: elevated temperature increased fiber diameter and intensified interlayer fusion, leading to significant scaffold height reduction; Higher voltage refined the fibers but caused disordered deposition and a sharp reduction in layer number at excessive levels; Increased air pressure thickened the fibers and induced interlayer fusion; Faster collection speed refined the fibers while reducing thickness; Greater collection height significantly increased layer number but reduced interlayer adhesion when excessively high; Smaller nozzle inner diameter refined the fibers but caused a disordered fiber arrangement below critical dimensions. The maximum scaffold thickness reached 3.43 mm with 235 layers. Additionally, three failure modes were observed: disordered fiber deposition, polymer droplet formation, and interlayer fusion.}
}