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Chemical EngineeringQ&A LibraryIn the textile industry, filament and yarn sizes are reported in denier which is defined as the mass in grams of a length of 9000 meters. IF a synthetic fiber has an average specific gravity of 1.32 and filament of this material has a denier of 5.0, what is the mass per unit length is pounds-mass per yard? What is the cross-sectional area of this fiber in square inches? The specific gravity is defined as: specific gravity=density/(density of water)Question

Asked Sep 3, 2019

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In the textile industry, filament and yarn sizes are reported in denier which is defined as the mass in grams of a length of 9000 meters. IF a synthetic fiber has an average specific gravity of 1.32 and filament of this material has a denier of 5.0, what is the mass per unit length is pounds-mass per yard? What is the cross-sectional area of this fiber in square inches? The specific gravity is defined as: specific gravity=density/(density of water)

Step 1

Given data:

Average specific gravity of synthetic fibre (*s*) = 1.32

Denier of the given filament = 5

It is known that Denier is mass (in grams) of the fibre which is 9000 m (*l _{f}*) in length. As the Denier of this filament is 5, therefore, the mass of the given fibre (

To calculate mass per unit length of this fibre the following unit conversions are helpful.

Unit conversion:

1 kg = 1000 g

1 lbm = 0.4536 kg

1 m = 1.09361 yards

The unit conversion of mass of the given fibre (in kg) and that of its length (in yards) is given in equation (1) and (2) respectively.

Step 2

Mass per unit length is calculated using equations (1) and (2) as shown in equation (3).

Step 3

The specific gravity is defined as the ratio of density of component to the density of water at 4 oC,...

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