How do you convert weight percent to volume?

1. Convert the units (mass in grams, volume in mL): mass KCl = 45.0g. volume of solution = 2.0 L = 2.0 L × 103 mL/ L = 2000 mL.
2. Calculate w/v (%) w/v (%) = [mass solute (g) ÷ volume solution (mL)] × 100. Substitute in the values and solve: w/v (%) = [45.0 ÷ 2000 mL] × 100 = 2.25 g/100mL (%)

How do you calculate percent crystallinity?

Polymer crystallinity can be determined with DSC by quantifying the heat associated with melting (fusion) of the polymer. This heat is reported as Percent Crystallinity by normalizing the observed heat of fusion to that of a 100 % crystalline sample of the same polymer.

What is the percentage of crystallinity?

The one-dimensional “Total scattering” spectrum is obtained by integrating two-dimensional detector data like that shown in Figure 1. This spectrum is then deconvoluted into amorphous and crystalline scattering components. In this case, the percent crystallinity is determined to be 46%.

What is crystallinity index?

Crystallinity index (CI) is a quantitative indicator of crystallinity. Various techniques, such as X-ray. diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy, and many. methods based on these techniques have been used to define the CI of HA.

What is degree of crystallinity polymer?

The crystallinity of a polymer refers to the degree as to which there are regions where the polymer chains are aligned with one another. However, in order for this to occur, some degree of stereoregularity is required.

What factors influence the crystallinity of polymers?

Factors favouring crystallinity

• Fewer short branches – allowing molecules to pack closely together.
• Higher degree of stereoregularity – syndiotactic and isotactic polymers are more ordered than atactic polymers.
• More regular copolymer configuration – having the same effect as stereoregularity.

What is a 5% solution?

5% v / v solution means 5 ml of solute is dissolved 100 ml of solution.

What are 10 solutions examples?

Examples of household solutions would include the following:

• coffee or tea.
• sweet tea or coffee (sugar added to solution)
• any juice.
• saltwater.
• bleach (sodium hypochlorite dissolved in water)
• dishwater (soap dissolved in water)
• carbonated beverages (carbon dioxide dissolved in water is what gives sodas their fizz)

What is high crystallinity?

Crystallinity defines the degree of long-range order in a material, and strongly affects its properties. Increasing the degree of crystallinity increases hardness and density. This is illustrated in poly(ethene). HDPE (high density poly(ethene)) is composed of linear chains with little branching.

How to determine the percent crystallinity of a polymer?

It is also possible to determine the percent crystallinity of a polymer using DSC measurements. In this case, you will need to know the specific heat capacities of purely crystalline and purely amorphous samples of the polymer in order to complete the calculations.

How to convert weight percent to volume fraction?

Conversion of Weight Percent to a Volume Fraction. You would need to know the density of the mixtures (which will be different from each other). Then consider a control volume of say one liter. you know the total mixture weight, multiply by percent water to get water weight. Then divide by density of of water (1 kg/L) to get water volume,…

How to calculate the weight percent of a solution?

So , if m is the mass of Solute and M is the mass of solvent, then Weight percent formula will be It is generally given as 30% NaCL by weight solution or 50% HCL by weight solution 1. A solution is prepared by adding 3 g of a substance A to 17 g of water. Calculate the mass per cent of the solute.

How to calculate the volume fraction of pytantriol?

To calculate for water, you can use the same numbers, but you now have. Volume Fraction H 2O: 53/(53+49.96) x 100 = 51.5%, as you have slightly more volume of water than polymer. (assuming 1mL H 2O = 1g) i.e. you had slightly more than doubled the volume of your pytantriol:brij phase with the swelling reaction.