You are given a sample of polypropylene and wish to find out the volume % crystallinity. You know that the density of 100% crystalline polypropylene (ρc) is 0.946 g/cm3, and the density of 100% amorphous polypropylene (ρa) is 0.855 g/cm3. Through your careful measurements, you determine the density of the sample (ρs) is 0.93 g/cm3. Use the following equation to determine the volume % crystallinity (ν) of your sample. Enter your answer with 1 decimal place. Answer is 82.4 Another sample of polypropylene has a 68 volume percent crystallinity. What is the density of the sample? Enter your answer is g/cm3. ( I need help with this second question. The answer is .917, i just can't get to that.) Hint: use the values and equation from the previous problem.
You are given a sample of polypropylene and wish to find out the volume % crystallinity. You know that the density of 100% crystalline polypropylene (ρc) is 0.946 g/cm3, and the density of 100% amorphous polypropylene (ρa) is 0.855 g/cm3. Through your careful measurements, you determine the density of the sample (ρs) is 0.93 g/cm3. Use the following equation to determine the volume % crystallinity (ν) of your sample. Enter your answer with 1 decimal place.
Answer is 82.4
Another sample of polypropylene has a 68 volume percent crystallinity. What is the density of the sample? Enter your answer is g/cm3. ( I need help with this second question. The answer is .917, i just can't get to that.)
Hint: use the values and equation from the previous problem.
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