悬浮扩散共聚法制备聚合物GRIN小球及对折射率梯度分布的控制

Preparation of Polymer Spherical Symmetry GRIN Microsphereby SDC and Controlling Its Gradient Index Distribution

选用 MMA为单体 M1、 3 FEA为单体 M2 ,通过悬浮扩散共聚法制备了可见光透过率为 90 %的聚合物GRIN小球 .采用剪切干涉法测得小球内的折射率基本上呈抛物线型球对称梯度分布 ,折射率差Δn达到0 .0 1 9.

A polymer spherical GRIN sphere lens was prepared by the suspension-diffusion-copolymerization(SDC) technique by using MMA as monomer M 1 and 3FEA as M 2. The radial distribution of refractive index of the lens was measured by the shearing interference method, which demonstrated that the quadratic refractive-index distribution was formed in the sphere lens, and its Δn=0.019.