Zeolite Y was obtained from Universal Oil Products in the sodium form. It was refluxed with ammonium nitrate overnight and calcined at 550 • C for 3 h to convert it to the HY form. Poly(ethylene) with a molecular weight of 700 g/mol was obtained from Polysciences Inc. (Warrington, PA). Poly(propylene) with a molecular weight of 12,000 g/mol and poly(styrene) with a molecular weight of 850,000 g/mol were obtained from Aldrich Chemical (Milwaukee, WI). Samples, which were mixtures of 95% HY and 5% polymer by weight, were heated in 25 mL/min helium by using the DuPont Instruments 951 thermogravimetric analyzer. Approximately 10 mg sample masses were employed for thermal analyses. Effluent exiting the thermogravimetric analyzer was directed to the repetitive injection sampling valve (Fig. 1). Fast GC-MS chromatograms were obtained by using a 5 m long, 0.25 mm i.d. At-1 fused silica column (Alltech) with a 0.25 m stationary phase film thickness. A 2.5 mL/min He column flow rate was employed for all separations.
Poly propylene
Manufactured by Merck Group
Poly(propylene) is a thermoplastic polymer used in the manufacturing of various laboratory equipment. It is a lightweight, durable, and chemically resistant material that is widely used in the production of laboratory products such as beakers, pipettes, and centrifuge tubes. Poly(propylene) exhibits good thermal stability and can withstand a wide range of temperatures, making it suitable for a variety of laboratory applications.
Automatically generated - may contain errors
Lab products found in correlation
2 protocols using poly propylene
1
Thermal Degradation of Polymer-Zeolite Composites
2
In Situ Polymerization of Polythiophene Films
Check if the same lab product or an alternative is used in the 5 most similar protocols
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The in situ polymerization was
performed by spin coating the metastable reaction mixture of 2,2′-bithiophene
(Alfa Aesar) and iron(III) p-toluenesulfonate hexahydrate
(Aldrich) in 1-propanol (synthesis grade, Roth). The precleaned glass
substrates were coated with thin layers of polypropylene (Aldrich)
by spin coating from 1-chlorobenzene (synthesis grade, Roth) to increase
the adhesion of the polythiophene films during the posttreatment steps.
All chemicals involved were used without further purification. The
metastable reaction mixture was spin coated with 2000 rpm for 60 s
at a substrate temperature of 90 °C. Afterwards, the films were
rinsed in either acetonitrile (doped polythiophene films) or ethanol
(undoped polythiophene) for 30 min. Finally, the undoped PT films
were annealed at 200 °C for 10 min in ambient atmosphere. For
each experiment, the sum of the molar concentrations of PT and FeTos
in the reaction mixture was kept constant upon variation of the ratio
between them. Nevertheless, the overall concentration was set to match
the resulting thickness required for each experimental method.
performed by spin coating the metastable reaction mixture of 2,2′-bithiophene
(Alfa Aesar) and iron(III) p-toluenesulfonate hexahydrate
(Aldrich) in 1-propanol (synthesis grade, Roth). The precleaned glass
substrates were coated with thin layers of polypropylene (Aldrich)
by spin coating from 1-chlorobenzene (synthesis grade, Roth) to increase
the adhesion of the polythiophene films during the posttreatment steps.
All chemicals involved were used without further purification. The
metastable reaction mixture was spin coated with 2000 rpm for 60 s
at a substrate temperature of 90 °C. Afterwards, the films were
rinsed in either acetonitrile (doped polythiophene films) or ethanol
(undoped polythiophene) for 30 min. Finally, the undoped PT films
were annealed at 200 °C for 10 min in ambient atmosphere. For
each experiment, the sum of the molar concentrations of PT and FeTos
in the reaction mixture was kept constant upon variation of the ratio
between them. Nevertheless, the overall concentration was set to match
the resulting thickness required for each experimental method.
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