Photoinitiated Polymerization with Visible Lasers

本研究的重点是对可见光引发剂和可见光激光引发的光聚合过程进行有效的实验理解。感兴趣的主要应用是三维成像：使用激光来控制轮廓或形状的形成。因此，这项工作的目标是最终了解交联凝胶的形状形成，并了解光聚合速率如何影响尺寸。另一个目标是将光化学聚合过程的研究扩展到可以用于改变或控制链式反应结果的独特优势的系统，例如在恶劣条件下。本研究的具体目标是：1)优化作用于488nm、514nm、632nm和720nm的引发剂，并实现“深度”可控聚合。2)优化激光引发丙烯酸酯光聚合工艺的尺寸控制，开发成型工艺。3)开发时间分辨光聚合实验，使光聚合速率可以作为引发剂、单体、光源、4)优化激光引发丙烯酸酯光聚合的性能控制和光速度。5)开发激光引发丙烯酸酯光聚合形成复合材料的技术。6)发展在恶劣条件下激光引发聚合形成复合材料和聚合物的技术。7)开发除丙烯酸酯以外的单体体系，可以用可见激光进行有效的光聚合。

The focus of this research is to develop a working experimental understanding of photopolymerization processes initiated with visible light initiators and using visible lasers. The principal application of interest is three-dimensional imaging: using a laser to control the formation of contour or a shape. Thus, a target of the work is to understand, eventually, the formation of shapes from crosslinked gels and to understand how photopolymerization rates effect the dimensions. Another goal is to expand studies of photochemical polymerization processes to systems that can be used to unique advantage in altering or controlling the outcome of a chain reaction, such as under harsh conditions. The specific goals for this research are: 1) To optimize initiators which function at 488 nm, 514 nm, 632 nm and 720 nm and cause controlled polymerization "at depth". 2) To optimize dimensional control in laser initiated acrylate photopolymerization, and develop techniques which form contours. 3) To develop time-resolved photopolymerization experiments such that the rates of photopolymerizations can be evaluated as a function of initiator, monomer, light source, in the dimension Z. 4) To optimize property control and photospeed in laser- initiated acrylate photopolymerization. 5) To develop techniques for the formation of composite materials using laser-initiated acrylate photopolymerization. 6) To develop techniques for the formation of composites and polymers by laser-initiated polymerization under harsh conditions. 7) To develop monomer systems, other than acrylates, that can be efficiently photopolymerized with visible lasers.