拉曼光谱在线测量技术在聚合物合成与加工中的应用研究进展

聚合物的合成与加工过程影响着材料的聚合度、结晶度、取向度以及共混组分的均匀性，最终影响聚合物产品的性能。因此对聚合物合成与加工过程中材料的实时状态进行监控至关重要。拉曼光谱在线测量技术凭借其无损检测、采样简单、可靠性高，对试样的外形和物态没有任何特定要求，且能在高温、高压、有毒的环境中直接进行在线测量等特点，在高分子材料合成与加工领域有了越来越广泛的应用。将此在线测量技术应用到高分子合成与加工过程中，实时测量高分子材料的化学组成和物理性质，并将测量数据用于控制合成与加工过程，可以提高高分子材料的性能。本文选择聚合反应转化率、聚合产物粒径及其分布、聚合物结晶度、聚合物取向度、多相共混聚合物组分含量等五个反映聚合物合成或加工过程状态的参量，概述了拉曼光谱在线测量上述参量的相关研究进展，并对拉曼光谱在线测量技术在聚合物合成及加工中的应用发展进行了展望。

Applications of Real-Time Measurement Technology with Raman Spectroscopy for Polymer Synthesis and Processing

The process of polymer synthesis and processing affects the degree of polymerization ,crystallinity ,orientation and the uniformity of blending components ,which ultimately influences the performance of polymer products .Therefore ,real‐time mo‐nitoring of material properties is very important in the process of polymer synthesis and processing .Real‐time measurement tech‐nology with Raman spectroscopy has been widely applied in the field of polymer synthesis and processing ,since it features non‐destructive testing ,easy sampling and high reliability .It has no specific requirements for the sample’s thickness ,shape and state ,and it realizes the measurement in high temperature ,high pressure and toxic environment directly .Real‐time Raman spec‐troscopy can analyze material chemical composition and physical properties .It controls the process of polymer synthesis and pro‐cessing to improve the performance of polymeric products .In this paper ,the research progress in real‐time measurement of poly‐merization conversion ,polymer particle size and distribution ,crystallinity ,orientation ,and components content in multiphase blend polymers with Raman spectroscopy is discussed .The application of real‐time measurement technology with Raman spec‐troscopy has great potential .