Effects of zinc isophthalate on the crystallization and crystal transformation behavior of polybutene alloy was written by Zhu, Enci;Guo, Chao;Wang, Jie;Zhao, Shicheng. And the article was included in Journal of Polymer Research in 2022.Formula: C73H108O12 This article mentions the following:
The slow crystallization rate and crystal transformation restrict the application of PB-A (PB blended with 2-3wt% polypropylene). This paper investigated the effects of zinc isophthalate (ZnIA) on the crystallization and crystal transformation behavior of PB-A by means of DSC, POM, XRD and Flash DSC. The results showed that addition of ZnIA raised the crystallization peak temperature from 71.1°C to 82.8°C and decreased the half crystallization time from 818 s to 160 s at the content of 0.2wt%. It also reduced the spherulites size dramatically according to the images of POM. The survey conducted by Flash DSC showed that the formation of amorphous phase was retarded by the addition of ZnIA as cooling rate increasing and as a result, the crystallinity of PB-A was raised from 50.0 to 56.1% with 0.2wt% ZnIA added. Moreover, the improvement on crystal transformation caused by ZnIA could be owing to the increase in crystallization temperature which leads to the enhancement of internal thermal stress and shortened nucleating process as well before the growth of form I. In conclusion, Znic Isophthalate is a kind of effective and multifunctional nucleating agent for PB-A and this study is beneficial to understand the mechanism of crystallization as well as the crystal transformation for PB-A. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Formula: C73H108O12).
2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Formula: C73H108O12
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics