scholarly journals Evaluation of Biodegradability of Polymeric Materials by Analytical Pyrolysis and Mass Spectrometry.

2003 ◽  
Vol 51 (1) ◽  
pp. 319-323 ◽  
Author(s):  
Hiroaki SATO
Keyword(s):  
Mass Spectrometry ◽  
Polymeric Materials ◽  
Analytical Pyrolysis

scholarly journals Plastics in Heritage Science: Analytical Pyrolysis Techniques Applied to Objects of Design

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1705 ◽  
Author(s):  
Jacopo La Nasa ◽  
Greta Biale ◽  
Barbara Ferriani ◽  
Rafaela Trevisan ◽  
Maria Perla Colombini ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
20Th Century ◽  
Compositional Data ◽  
Evolved Gas Analysis ◽  
Polymeric Materials ◽  
Conservation Strategies ◽  
Analytical Pyrolysis ◽  
Non Invasive ◽  
Degradation Processes ◽  
Design Objects

The first synthetic polymers were introduced as constituents of everyday life, design objects, and artworks at the end of the 19th century. Since then, the history of design has been strictly connected with the 20th century evolution of plastic materials. Objects of design from the 20th century are today a precious part of the cultural heritage. They raise specific conservation issues due to the degradation processes affecting synthetic polymer-based plastics. Museums and collections dealing with the conservation of design objects and modern materials need to base their conservation strategies on compositional data that reveal the formulations of historical plastics and their decay processes. Specific and specifically optimized analytical tools are thus needed. We employed flash analytical pyrolysis coupled with gas chromatography and mass spectrometry (Py-GC/MS) and evolved gas analysis coupled with mass spectrometry (EGA-MS) to characterize “historic polymeric materials” (HIPOMS) and heritage plastics at the molecular level with high chemical detail. This approach complements non-invasive spectroscopic diagnosis whenever it fails to obtain significant or complete information on the nature and the state of preservation of the materials under study. We determined the composition of several 20th century design objects (1954–1994) from the Triennale Design Museum of Milan (Triennale Milano - Museo del Design Italiano), which for different morphological, chemical, or physical reasons were unsuitable for characterization by non-invasive spectroscopy. EGA-MS proved capable for the study of the different fractions constituting heterogeneous micro-samples and for gaining an insight into their degradation processes from the contextual interpretation of thermal and mass-spectrometric data.

Simple technique for the pyrolysis-mass spectrometry of polymeric materials

The Analyst ◽  
1977 ◽  
Vol 102 (1211) ◽  
pp. 143 ◽  
Author(s):  
J. C. Hughes ◽  
B. B. Wheals ◽  
M. J. Whitehouse
Keyword(s):  
Mass Spectrometry ◽  
Simple Technique ◽  
Polymeric Materials ◽  
Pyrolysis Mass Spectrometry

scholarly journals The Radiocarbon Content of Individual Lignin-Derived Phenols: Technique and Initial Results

Radiocarbon ◽  
2000 ◽  
Vol 42 (2) ◽  
pp. 219-227 ◽  
Author(s):  
A P McNichol ◽  
J R Ertel ◽  
T I Eglinton
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Phenolic Compounds ◽  
Accelerator Mass Spectrometry ◽  
Bulk Material ◽  
Polymeric Materials ◽  
Chemical Oxidation ◽  
Flavor Compounds ◽  
The Individual ◽  
Initial Results

We present a method for the isolation of phenolic compounds derived from lignin for radiocarbon analysis. These phenols are generated by chemical oxidation of polymeric materials and derivatized for separation and recovery by preparative capillary gas chromatography (PCGC). This technique yields tens of micrograms of pure, stable compounds that can be converted to graphite and analyzed by accelerator mass spectrometry (AMS). Analysis of model flavor compounds and dated woods indicates that, in most cases, the radiocarbon (14C) contents of the individual compounds, corrected for the contribution of the derivative, agree with that of the bulk material to within 20%.

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