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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Three-dimensional printing of porous polyethylene structure using water-based binders.
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Three-dimensional printing of porous polyethylene structure using water-based binders.

机译：使用水性粘合剂对多孔聚乙烯结构进行三维打印。

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摘要

This study demonstrated a freeform fabrication of porous hydrophobic polyethylene parts by three-dimensional printing technique, using water-based binder. This involved initially making a green structure by printing a binder onto the mixture of polyethylene and water soluble adhesive powder bed. The green structure was thermal treated to melt polyethylene fraction to achieve a well-connected structure within the part. Adhesive components were then leached out in water, leaving only porous structure of polyethylene. Specimens with ratios of polyethylene to adhesive from 80:20 to 20:80 were fabricated and characterized. It was found that increasing polyethylene content increased density, modulus, and strength while decreased porosity. Preliminary in vitro toxicity test of porous parts using L929 cells showed that the cells that were in contact with samples were healthy. No inhibition zone was observed.
机译：这项研究证明了使用水性粘合剂通过三维印刷技术以自由形式制造多孔疏水性聚乙烯部件。这首先涉及通过将粘合剂印刷到聚乙烯和水溶性胶粉床的混合物上来制造绿色结构。对生坯结构进行热处理以熔化聚乙烯级分，从而在零件内实现良好连接的结构。然后将粘合剂组分浸出到水中，仅留下聚乙烯的多孔结构。制备并表征了聚乙烯与粘合剂的比例为80:20至20:80的样品。发现增加的聚乙烯含量增加了密度，模量和强度，同时降低了孔隙率。使用L929细胞对多孔部件进行的初步体外毒性测试表明，与样品接触的细胞是健康的。没有观察到抑制区。

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