【作者】 白林轶； 金飚兵； 解令海； 仪明东； 吴培亨； 黄维；

【Author】 Lin-Yi Bai 1,Biao-Bing Jin 2,Ling-Hai Xie 1,,Ming-Dong Yi 1,Pei-Heng Wu 2,Wei Huang 1, 1 Institute of Advanced Materials,Nanjing University of Posts & Telecommunications,9 Wenyuan Road,Nanjing,210046 2 School of Electronic Science and Engineering,Nanjing University,22 HanKou Road,Nanjing,210093

【机构】 南京邮电大学材料科学与工程学院； 南京大学电子科学与工程学院；

【摘要】 <正>THz时域光谱在物理学和光学的研究领域逐渐成为一项新的工具,其应用也涵盖了从生物成像到材料表征等诸多方面[1]。我们研究小组在研究中发现,较低分子质量的位阻胺光稳定剂(HALS:hindered amine light更多还原

【Abstract】 Time domain terahertz spectroscopy(THz-TDS) represents a new tool for physical and optical research and has applications ranging from medical imaging to materials characterization [1].THz-TDS has been demonstrated to characterize plastic additives,in which various low molecular weight hindered amine light stabilizers(HALS) in high density polyethylene(HDPE) exhibit individual’s "fingerprint" absorption profiles.Herein,a series of hindered amine light stabilizers(HALS),including TMP,PMP,BB-PMP,Chimassorb 944 and 119,and a nitroxide free radical of HTEMPO in the matrix of high density polyethylene have been characterized in the range of 0.2-2.6 THz.TMP,PMP and BB-PMP exhibit individual well-resolved terahertz absorption spectra at room temperature.Furthermore,a linear relationship of the content of TMP versus the intensity of it first THz absorption peak have been demonstrated.THz-TDS will afford a potential tool to investigate the stabilizing mechanism of HALS and monitor their evolution.更多还原