标题: | 聚乳酸成形蜂巢结构薄膜与电浆辅助改质表面研究 Preparation of Honeycomb-Structure Polylactide Films and Their Surface Modification using Atmospheric-Pressure Plasma Jet |
作者: | 廖国淳 吴宗信 Wu, Jong-Shinn 机械工程系所 |
关键字: | 蜂巢状结构;聚乳酸;气流量;浓度;湿度的温度;Honeycomb-patterned films;polylactide;airflow;PLA concentration;humidity |
公开日期: | 2013 |
摘要: | 蜂巢状结构的支架备制,使用可生物降解性的聚乳酸(Polylactide)为主要原料,在湿度的环境法 (breath figure method)制造蜂巢状结构(简称honeycomb pattern)之材料,改善细胞在平坦无结构之薄膜上的增生速度,再利用以氮气为主参入适当比例的氧气产生的低温常压电浆,来作为表面改质技术,利用电浆的特性可把官能基植入表面以利于细胞贴附。主要探讨honeycomb pattern 成形孔洞的参数条件和电将处理表面前后表面特性为研究。将利用湿度之气流量、聚乳酸溶液浓度、湿度温度等,各种参数的调整来改变honeycomb pattern孔洞的尺寸。藉由高解析度场发射扫描电子显微镜来检测成形孔洞和表面结构的情形,水滴接触角量测仪测量电将处理表面前后的表面能,结果显示,honeycomb pattern的孔洞会依实验参数调整而影响孔洞尺寸,目前可产生均匀性的孔洞尺寸范围为2~3m,在湿度的环境温度30℃下成形,在未经过低温电浆表面处理前 水滴接触角为80∘以上,电浆处理后降为65±2∘,详细的结果在文中会有所描述。 Honeycomb-patterned films with polymer were fabricated by a high humidity method and were treated using low temperature plasma. A two-dimensional honeycomb pattern was formed when a polylactide(PLA) solution with surfactant-free was cast on solid surfaces under atmospheric condition with high humidity. The pattern, the pore size, and surface energy were then evaluated by SEM and contact angle. The results showed that the pore size range distributes differently under different operation conditions. Air flow, polymer type, PLA concentration, and humidity were found to be important factors in the formation of honeycomb-structured thin films. The case with a pore size of 2 m shows a great uniformity under 30℃ humidified environment. The water contact angle with 80 degrees on the film surface showed the hydrophobicity of the film surface, which was an important result of the formation of the porous structure. After low-temperature plasma treatment the honeycomb-pattern films, water contact angle decreases to 65o±2. Detailed results are described in the thesis. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT070051027 http://hdl.handle.net/11536/73517 |
显示于类别: | Thesis |
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