GBF Report - Polystyrene Foam

33 Note: The blue foam had a two-component match, PS and NeoCryl-A-1091. NeoCryl-A-1091is a chemical made from a styrene acrylic polymer. There are many NeoCryl chemicals that are commercially available for water-dispersible resin emulsions; examples include the NeoCryl product line which have many acrylic styrene copolymer emulsions acrylic copolymer emulsions (Markies et al., 2013). NeoCryl-A-1091is listed under the Toxic Substances Control Act (TSCA), and regulated under the Canadian Domestic substances list (DSL) (Ash and Ash, 2004). However, due to the uncertainties in FTIR analysis, it cannot be said with any certainty that this is the exact chemical that is in the PS. At most, we can say that a PS copolymer was present. A copolymer is a polymer derived from more than one species of monomer, and many different commercial copolymers are common. Color Hit Quality 842 717 Compound name NEOCRYL A-1091 POLYSTYRENE HIGH IMPACT CAS Number Molecular formula (C8H8)n Molecular weight Color File Bluefoam_GBF.0 Path C:\Users\RochmanLab\Documents\Bruker\OPUS_7.8.44\DATA\MEAS Spectrum Type Query Spectrum Compound Name Molecular Formula Molecular Weight CAS Registry Number Sample Preparation Comment Reference Copyright Entry No. Library name POLYSTYRENE HIGH IMPACT (C8H8)n ATR single bounce polystyrene 489/ MP0204 (c) 2014 Nicodom 633 ATR-LIB-POLYMERS-2-472-2.S01 500 1000 1500 2000 2500 3000 3500 4000 Wavenumber cm-1 0.0 0.2 0.4 0.6 0.8 1.0 Absorbance Units Portions ©STJapan, ©Nicodom, 2014 Appendix 6 .2 Blue Foam Search Library 2019-09-30 12:12:18 PM Page 1 of 1

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