ABSTRACT The relationship between linear chain (ethylene oxide units) length of polymerisable monomers with morphology, electro-optical properties and 13C nuclear magnetic resonance (NMR) spectroscopy of the corresponding polymer-dispersed liquid crystal (PDLC) films was investigated. The preferred liquid crystal molecule alignment and permanent memory effect of PDLC were greatly influenced by the length of the molecular chain of prepolymers to be incorporated as a polymer matrix. By increasing the number of ethylene oxide in prepolymer chain and maintaining the number of functionalities (polymerisable groups in each monomer molecule), the permanent memory effect of PDLC increased, as proved by solid-state 13C NMR spectroscopy. GRAPHICAL ABSTRACT

中文翻译：

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固相核磁共振评估预聚物链长对PDLC永久记忆效应的影响

摘要研究了可聚合单体的线性链（环氧乙烷单元）长度与相应聚合物分散液晶（PDLC）薄膜的形态、电光特性和 13C 核磁共振（NMR）光谱之间的关系。PDLC的优选液晶分子排列和永久记忆效应受作为聚合物基质加入的预聚物分子链长度的很大影响。通过增加预聚物链中环氧乙烷的数量并保持官能团的数量（每个单体分子中的可聚合基团），PDLC 的永久记忆效应增加，正如固态 13C NMR 光谱所证明的那样。图形概要