Investigation of the crystallization and mechanical properties of wood fiber/polypropylene composites nucleated by a self-assembly 尾-nucleating agent was written by Lv, Chao;Luo, Shupin;Guo, Wenjing. And the article was included in Polymer Bulletin (Heidelberg, Germany).Recommanded Product: 6683-19-8 This article mentions the following:
Isotactic polypropylene (PP) is a widely used and versatile commodity polymer with several polymorphs (伪, 尾, 纬). 尾-form isotactic PP attracted more interest due to its improved mech. properties in comparison with the more common 伪-form. Addition of 尾-nucleating agents is an easy approach to induce 尾-form in isotactic PP. Few studies paid attention to the use of 尾-PP as the matrix of natural fiber/PP composites. In this study, isotactic PP was nucleated by a 尾-nucleating agent N, N鈥?dicyclohexylterephthalamide (TMB-5) and then melt compounded with poplar wood fiber (WF) to prepare WF/PP/TMB composites. The influence of adding different contents (0.05, 0.1, 0.15, 0.3 and 0.5%) of TMB-5 on the crystalline morphol., melting and crystallization behavior, mech. properties and heating deflection temperature (HDT) of WF/PP composites was investigated. It was found that TMB-5 accelerated the crystal nucleation and induced 尾-crystal growth due to TMB-5 provided the nucleation site. The crystals size of WF/PP/TMB composite decreased and crystals boundaries became blurred with the increasing contents of TMB-5. The TMB-5 contents also affected the self-assembly morphol. of TMB-5 which further influenced the morphol. of crystals. The relative content of 尾-crystal (K尾) reached maximum value of 65.3% when the content of TMB-5 was 0.3%. But WF decreased K尾 of PP/TMB under same content of TMB-5 which demonstrated the interference of WF with the generation of 尾-crystal. For mech. properties, impact strength of WF/PP/TMB composite reached maximum value of 9.6 kJ路m-2 when adding 0.05% TMB-5. The TMB-5 contents had an insignificant effect on the flexural strength and modulus of WF/PP/TMB composite. Compressive strength of WF/PP/0.3%TMB composite reached maximum value of 64.4 MPa, which increased by 25.5% compared to WF/PP composite. Moreover, TMB-5 could improve the HDT of WF/PP composite as well. These results revealed that the addition of 尾-nucleating agent TMB-5 is an effective and practical method to improve crystallization rate and mech. properties of WF/isotactic PP composites. WF/PP/TMB composite can be used in construction decoration, catering, automobile applications. 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: 6683-19-8Recommanded Product: 6683-19-8).
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 typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Recommanded Product: 6683-19-8
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Ester – Wikipedia,
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