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Plastic Emissions

CASSEN Testing Laboratories offers a wide range of analysis for plastic precursors, additives, and by-products of decomposition. Our state-of-the-art equipment provides accurate and reliable analysis for different matrices and sampling methods. CASSEN has extensive experience in method development and interpretation of analytical data and provides high quality services to meet client needs.

Emissions from plastic products manufacturing facilities occur, where solid resins are heated and melted, liquid solvents and solvent blends are exposed to the atmosphere, additives are introduced, and where chemical reactions occur. Therefore, it is expected that emissions are influenced by chemical makeup of the process materials, the physical makeup of the plastic processing equipment, and the conditions under which processing occurs.

ThermoplasticsStarting MaterialsBy-products / Additives
PEEthyleneVinyl Acetate as Co-Polymer
PVCVinyl ChloridePhthalic Anhydride, Phthalic Esters
PPPropyleneHigh Decomposition Rates, Antioxidants added
PSStyreneDivinylbenzene As Co-Monomers; Pentane, 1,1,1,3,3-Pentafluoropropane,Methylene Chloride as Foaming Agents
PETEthylene Glycol,Dimethyl TerephthalateCyclohexanedimethanol as Additive,Methanol as By-Product
ABS, SAAcrylonitrile, Styrene, 1,3-ButadieneBenzene, Ammonia, Propylene
PMMAMethyl Acrylate,Methyl MethacrylateMethacrylic Acid And Butyl Acrylate asCo-Monomers
PANylon 6,6-Hexamethylenediamine, Adipic Acid, Nylon 6 – CaprolactamHydrogen Cyanide, Ammonia and other Amines from Thermal Oxidation
PCAlkyl Diols, Alkyl Carbonates, Bisphenol A, PhosgeneHCl, Cyclohexane used as Co-Monomer

Thermosetting ResinsStarting MaterialsAdditives/Foaming Agents
EpoxyEpichlorohydrin, Bisphenols, Phenolamine, MercaptoethanolPhenols, Thiols, Cyclic Anhydrides As Hardeners; Imidazole as Catalyst
PolyesterCaprolactone, Hydroxybutyrate, Trimethylene CarbonateHcl As Catalyst, Methyl Ethyl Ketone Peroxide, Benzoyl Peroxide, Catalysts for Crosslinking
UreaUrea -FormaldehydeAmmonia, Pyridine as Catalysts
MelamineMelamine- FormaldehydeButanol and Xylenes as Solvents,
Phenols as Binder
PhenolicsPhenol- FormaldehydeHexamethylenetetramine used as Hardener
PolyurethaneToluene Diisocyanate, Methylene Diisophenylcyanate, Ethylene Glycol1,1,1,3,3-Pentafluoropropane,
1,2-Dichloroethylene, Pentane

In ambient air, VOC emissions can be transported by prevailing winds over long distances, making them not only a local urban issue but one that extends regionally into many smaller communities and rural areas. Characterisation of VOCs in the air will help to determine the actual source of emission of some of these harmful VOCs. Moreover, odorous organics generated in some of these operations can be traced to their origins.