Jakub Michał Milczarek

Organisation For The Prohibition Of Chemical Weapons · OPCW Laboratory

The thin layer of spray paint, which creates an inscription, smudge or a drawing on plaster has to be examined in situ. The application of reflectance IR spectroscopy enables one to identify in some cases the spray paint directly on plasters. However, very often the bands of plaster components overlay signals originating from paint, making its iden...

Pyrolysis (Py)-GC/MS was applied to differentiate between automobile paint samples. The method was used for analysis of 36 samples of styrene acrylic urethane clearcoats that were indistinguishable on the basis of their infrared spectra and elemental composition. Differences observed in the obtained pyrograms of the compared paint samples were rela...

Pyrolysis (Py)-GC/MS was applied in comparative analysis of polymer binder of 150 automobile clearcoat samples. It was found that binders of identical type and similar infrared spectra can be, in most cases, effectively differentiated, sometimes based only on the presence of peaks of very low intensity originating from minor paint components. The q...

A direct goal of this paper was to improve the methods of sample preparation and separation for analyses of fibroin polypeptide with the use of size exclusion chromatography (SEC). The motivation for the study arises from our interest in natural polymers included in historic textile and paper artifacts, and is a logical response to the urgent need...

Przedmiotem wynalazku jest modyfikowany materiał nanokompozytowy oparty na celulozie oraz sposób jego wykonania. http://pubserv.uprp.pl/PublicationServer/index.php?strona=lw&number=P.411409

Przedmiotem wynalazku jest materiał nanokompozytowy, sposób jego wytwarzania oraz zastosowanie. Bardziej szczegółowo rozwiązanie dotyczy: opakowaniowego materiału nanokompozytowego.

All historical textile materials, due to their chemical composition (cellulose, protein), under conditions of high humidity are potentially exposed to microbial degradation. Numerous examples of microbial deterioration of archaeological textile materials demonstrate the need for the use of modern analytical methods for examination of diversity of o...

Due to their practical importance and widespread application in the studies of polymer degradation, the analytical methods: viscometry, colour and mass change, pH, mechanical strength were selected in this work so as to provide a macroscopic view of silk condition. The aim of the current work is to critically discuss the results obtained by these m...

A nanocomposite material with antimicrobial properties, based on cellulose packed with a mineral filler (zeolite) exchanged with silver, characterised in that the mineral filler is made up of Y-type zeolites, while silver occurs in a form bound with the zeolite matrix in the form of cations and, optionally, nanoparticles of reduced silver, as well...

Fragments of paint coat or paint smears are very often transferred onto the clothing of a hit-and-run accident victim. Identification of paint samples requires examination of their polymer binders by pyrolysis–gas chromatography–mass spectrometry method (Py-GC–MS). Previously, Py-GC–MS has been successfully applied in our laboratory to the analysis...

Two analytical techniques were applied in identification of polymer binder of 60 automobile paint samples. It was found that binders of identical type and similar infrared spectra could be effectively differentiated by means of Py GC-MS. When paint samples are indistinguishable on the base of their IR spectra the application of Py-GC/MS often enabl...

Słowa kluczowe: test, egzamin, Internet, PHP, MySQL, klient-serwer. Streszczenie Proponowany system egzaminowania, z istotnym wykorzystaniem moliwości współczesnych narzędzi informatycznych, jest próbą zracjonalizowania tej tak trady-cyjnej części dydaktycznego procesu, jakim jest okresowa ocena poziomu przyswo-jonej przez studentów wiedzy. To czyn...

A procedure for the analysis of paints by pyrolysis gas chromatography with the use of CDS Pyroprobe 2000 (Analytix, UK) apparatus coupled with GC-MS TurboMass (Perkin Elmer) was developed. The efficacy of the analytical procedure was checked by analysis of several chosen polymer materials. It was found that the procedure allows reliable and reprod...

The application of pyrolysis-gas chromatography (Py-GC) to car paint analysis for forensic purposes has been reviewed in this paper. The principles of the method and their application to paint analysis are described. On the basis of the literature, the structure of the applied apparatuses is also presented. Moreover, various techniques and procedur...