Designing Polymers with Spatially Graded Morphology and Programmable Surfaces by Photochemical Reactionsby Photochemical Reactions and

在这项研究中，由聚合物和第二聚合物的单体组成的混合物的相分离是通过用405 nm的可见光进行光聚合来诱导的。 通过利用光强梯度，产生调幅分解产生的共连续梯度，得到具有单向梯度共连续形态的聚合物。 另一方面，通过与计算机辅助辐照方法相结合，生成并控制了面内（XY）梯度共连续形貌。 通过向混合物中掺杂轻惰性吸收剂，可以产生沿着Z（厚度）方向的梯度结构，导致双轴梯度双连续结构。 最后，通过水的接触角观察这些共连续结构的表面自由能图。

In this study, phase separation of mixtures composed of a polymer and a monomer of the second polymer was induced by photo-polymerization with visible light at 405 nm.. By taking advantages of the gradient of the light intensity, the gradient of the co-continuous generated by spinodal decomposition was produced, leading to polymers with unidirectionally gradient co-continuous morphology. On the other hand, by combining with the computer-assisted irradiation method, the in-plane (XY) graded co-continuous morphology was generated and controlled. By doping light inert absorber into the mixture, the graded structures along the Z-(thickness) direction can be generated, leading to bi-axially graded bi-continuous structures. Finally, the surface free energy map of these co-continuous structures was observed contact angle of water.