Internal Training: Characterization of Latex

Mechanical stability time (MST) is very sensitive to the following, except

• Temperature and TSC

• Viscosity

• VFA & HFA

• Ammonia

Volatile fatty acid produced by bacterial action on x in latex after leaving tree. What is x?

• Protein

• Lipid

• Carbohydrate

• Amino acid

Which of the following is not a latex dispersion routine test?

• Coagulum content

• Alkalinity

• KOH number

• VFA number

The higher the viscosity, the lower the chemical stability of latex.

• True

• False

Which technique provides analysis of gases or volatile components liberated during thermal analysis?

• Differential Scanning Calorimetry (DSC)

• Thermomechanical analysis (TMA)

• Hyphenated evolved gas analysis (EGA)

• Thermogravimetric analysis (TGA)

Technique(s) for chemical identification characterization is/are:

• Nuclear magnetic resonance spectroscopy (NMR)

• Gel permeation chromatography (GPC)

• High-performance liquid chromatography (HPLC)

• Fourier-transform infrared spectroscopy (FTIR)

What is/are the technique(s) used for nitrogen content characterization?

• Nitrogen analyzer

• Electron spectroscopy for chemical analysis (ESCA)

• Fourier-transform infrared spectroscopy (FTIR)

• Kjeldahl

Test(s) for gloves characterization is/are:

• Tensile strength

• Elongation at break (EAB)

• Modulus

• Extractable protein

Which technique used for determining surface roughness?

• Time-of-flight Secondary Ion Mass spectroscopy (TOF-SIMS)

• Scanning electron microscopy with Energy dispersive X-Ray (SEM/EDX)

• Electron spectroscopy for chemical analysis (ESCA)

• Atomic force microscopy (AFM)

Which of the following visualization technique giving low resolution?

• Atomic force microscopy (AFM)

• Scanning electron microscopy with Energy dispersive X-Ray (SEM/EDX)

• Transmission electron microscopy (TEM)

• Optical microscopy