Abstract There is intimate connection between the degree of crystallinity and density for crystal polymer. Volume crystalline and weight crystalline are all related with the crystal density, acrystal density and real density of the polymer. The two formula are all be derived by the hypothesis that there are additivities between densities and specific volume. The two formula were derived through the weight or volume additivitie, while as no hypothesis is needed. It's very easy for students to understand.
YAO Jin-Shui, YANG Wen-Ke, QIAO Cong-De. Simple Fomula-Induced Method of the Relationship Between the Degree of Crystallinity and Density of Polymers[J]. Chinese Journal of Chemical Education, 2023, 44(2): 123-124.