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Precise microcoils and mesh pipes with outer and inner diameters of 100 μm and 60 μm were fabricated using laser‐scan lithography and electrolytic etching. Non‐magnetizable stainless‐steel (SUS304) pipes were coated with resist films, and helical patterns were delineated using a laser‐scan exposure system. Positive resist PMER P‐LA900 was used for fabricating microcoils, and negative resist PMER N‐CA3000...
A new fabrication method of cylindrical micro-components was investigated using laser scan lithography and electrolytic etching. First, net-like patterns were formed by repeating delineations of helical patterns crossing each other on fine pipes of stainless steel with an outer diameter of 100 µm and a wall thickness of 20 µm. The pipes were coated with 4-µm thick negative resist, and four couples...
Prepolymer was synthesized by use of PCL and hexamethylene diisocyanate (HDI), and then used to prepare modified zein-based polymers (ZPs). Solid-state 13 C NMR results showed that at least four amino acids (Glu, Gln, Tyr and His) reacted with the prepolymer, and urea–urethane links were prominent. Thermal analysis indicated that micro-phase separation formed between zein matrix and PCL–HDI...
To develop novel biodegradable materials, zein was modified using polycaprolactone (PCL)/hexamethylene diisocyanate (HDI) prepolymer. The modified zein polymers, containing various PCL–HDI components (PCLH) content and plasticized by Dibutyl l-tartrate (DBT), were compression-molded. Mechanical properties, water resistance, thermal properties and morphology of the molded zein-based sheets were investigated...
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