Investigation of the 3D Printing Process Utilizing a Heterophase System

被引：1
作者：
Menshutina, Natalia [1 ]
Abramov, Andrey [1 ]
Okisheva, Maria [1 ]
Tsygankov, Pavel [1 ]
机构：
[1] Mendeleev Univ Chem Technol Russia, Dept Chem & Pharmaceut Engn, Miusskaya pl 9, Moscow 125047, Russia
来源：
GELS | 2023年 / 9卷 / 07期
基金：
俄罗斯科学基金会;
关键词：
3D printing; heterophase system; gelatin; sodium alginate; EXTRUSION;
D O I：
10.3390/gels9070566
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Direct ink writing (DIW) requires careful selection of ink composition with specific rheological properties, and it has limitations, such as the inability to create overhanging parts or branched geometries. This study presents an investigation into enhancing the 3D printing process through the use of a heterophase system, aiming to overcome these limitations. A modification was carried out in the 3D printer construction, involving adjustments to the structural elements responsible for the extrusion device's movement. Additionally, a method for obtaining a heterophase system based on gelatin microparticles was developed to enable the 3D printing process with the upgraded printer. The structure and rheological properties of the heterophase system, varying in gelatin concentration, were thoroughly examined. The material's viscosity ranged from 5.4 to 32.8 kPa & BULL;s, exhibiting thixotropic properties, pseudoplastic behavior, and long-term stability at 20 & DEG;C. The developed 3D printing technology was successfully implemented using a heterophase system based on different gelatin concentrations. The highest product quality was achieved with a heterophase system consisting of 4.5 wt.% gelatin, which exhibited a viscosity of 22.4 kPa & BULL;s, enabling the production of products without spreading or compromising geometrical integrity.
引用
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页数：15
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