美国卡尔库公司的研究者,正在采用激光测定水溶性高分子的粒径分布。作为光子对比分光学而被发现的这种方法,能够不破坏分子,并在短时间里分析溶液中聚合物的复杂动态特性。也就是说,把激光聚焦在作布朗运动的聚合物的分散的分子上,通过计算机进行分析。布朗运动的特性是受分散粒子的大小所支配。在100秒钟之内,即能分析5毫米~3液体试料。 Researchers at the US Kalkan Company are using laser to measure the particle size distribution of water-soluble polymers. This method, discovered as a photon contrast spectroscopy, enables the analysis of the complex dynamics of polymers in solution without damaging the molecules and in a short period of time. That is, the laser is focused on the dispersed molecules of Brownian polymer and analyzed by computer. The characteristics of Brownian motion are governed by the size of the dispersed particles. Within 100 seconds, you can analyze 5 mm ~ 3 liquid sample.