Sökning: "nadejzda haider"

Hittade 2 avhandlingar innehållade orden nadejzda haider.

1. 1. Extraction and analysis of polyethylene stabilisers and their migration in a simulated landfill environment

   Författare :Nadejzda Haider; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Consumption and loss of commercial stabilisers in polyethylene exposed to different natural environments

   Författare :Nadejzda Haider; KTH; []
   Nyckelord :LDPE; MDPE; ultrasonic extraction; polymer additives; stabilisers; antioxidants; HALS; Irganox 1010; Irgafos 168; migration; consumption; GC-MS; additive degradation products;

   Sammanfattning : A procedure for the extraction and analysis of commercialstabilisers in low density and medium density polyethylene(LDPE and MDPE) films was developed and used to study theconsumption of stabilisers in polymers exposed to differentnatural environments. An ultrasonic technique was applied toextract HALS-3 (Chimassorb 944) from LDPE film and antioxidants(Irganox 1010 and Irgafos 168) from MDPE film. LÄS MER