Determination of additive content in polymeric compounds with terahertz time-domain spectroscopy

被引:101
作者
Wietzke, S.
Jansen, C.
Rutz, F.
Mittleman, D. M.
Koch, M.
机构
[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Hochfrequenztech, D-38106 Braunschweig, Germany
[2] Rice Univ, ECE Dept, Houston, TX 77005 USA
关键词
non-destructive testing; terahertz spectroscopy; polymeric compounds; additive content;
D O I
10.1016/j.polymertesting.2007.03.002
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We present terahertz transmission time-domain spectroscopy measurements on a variety of additive-polymer combinations with differing additive contents. At lower terahertz frequencies, standard polymers are transparent. When processed into compounds, their terahertz properties are distinctively affected by additives in most cases. The materials under investigation are magnesium hydroxide in linear low-density polyethylene, glass-fibres in polyamide, and calcium carbonate, silicon or silicon dioxide in polypropylene. The extracted indices of refraction provide a reliable determination of the additive content of the material combination. Hence, terahertz time-domain spectroscopy is capable of characterising additive-polymer systems and it seems to be a promising non-destructive technique for quality control in compounding processes. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:614 / 618
页数:5
相关论文
共 20 条
[1]   Combination of NIR, Raman, ultrasonic and dielectric spectroscopy for in-line monitoring of the extrusion process [J].
Alig, I ;
Fischer, D ;
Lellinger, D ;
Steinhoff, B .
MACROMOLECULAR SYMPOSIA, 2005, 230 :51-58
[2]  
[Anonymous], 2003, SENSING TERAHERTZ RA
[3]  
Bastian M, 2005, P 21 ANN M POL PROC
[4]  
BLOM G, 1989, PROBABILITY STAT THE
[5]   A reliable method for extraction of material parameters in terahertz time-domain spectroscopy [J].
Duvillaret, L ;
Garet, F ;
Coutaz, JL .
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1996, 2 (03) :739-746
[6]   Influence of noise on the characterization of materials by terahertz time-domain spectroscopy [J].
Duvillaret, L ;
Garet, F ;
Coutaz, JL .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2000, 17 (03) :452-461
[7]   In-line process monitoring on polymer melts by NIR-spectroscopy [J].
Fischer, D ;
Bayer, T ;
Eichhorn, KJ ;
Otto, M .
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1997, 359 (01) :74-77
[8]   Ultrasonic in-line monitoring of polymer extrusion [J].
França, DR ;
Jen, CK ;
Nguyen, KT ;
Gendron, R .
POLYMER ENGINEERING AND SCIENCE, 2000, 40 (01) :82-94
[9]   FAR-INFRARED TIME-DOMAIN SPECTROSCOPY WITH TERAHERTZ BEAMS OF DIELECTRICS AND SEMICONDUCTORS [J].
GRISCHKOWSKY, D ;
KEIDING, S ;
VANEXTER, M ;
FATTINGER, C .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (10) :2006-2015
[10]   Terahertz time-domain spectroscopy of solids: A review [J].
Hangyo, M ;
Tani, M ;
Nagashima, T .
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 2005, 26 (12) :1661-1690