Dichroism measurements in forensic fibre examination

Autor:	K. De Wael, T. Vanden Driessche
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Materials science business.industry Analytical chemistry Polymer Dichroism Dichroic glass Pathology and Forensic Medicine Polyester chemistry Microscopy Bathochromic shift Optoelectronics Hypsochromic shift Absorption (chemistry) business
Zdroj:	Science & Justice. 51:57-67
ISSN:	1355-0306
DOI:	10.1016/j.scijus.2010.10.001
Popis:	One hundred and twenty dyed polyester samples were examined with plane polarized light on their dichroic behaviour by optical light microscopy (OLM) and microspectrophotometry in the visible range (MSP Vis). It was found that most of these disperse dyed polyester fibres possess a strong dichroism, which fall into two broad categories. Either a decrease of intensity (hypochromic effect) or a change of hue (hypsochromic or bathochromic shift of absorption bands) is noted. These dichroic effects are related to the orientation of the dye structure with respect to the polymer chains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0c8cd03c53dac30aa870b00198a0030b https://doi.org/10.1016/j.scijus.2010.10.001 Zobrazit plný text záznamu Full Text from ScienceDirect