Thermoplastic polyurethane/butylene-styrene triblock copolymer blends: an alternative to tune wear behavior was written by Agnol, Lucas Dall;Toso, Giulio Tremea;Dias, Fernanda Trindade Gonzalez;Soares, Marcio Ronaldo Farias;Bianchi, Otavio. And the article was included in Polymer Bulletin (Heidelberg, Germany) in 2022.Application of 6683-19-8 This article mentions the following:
This work presents an interesting alternative for improving thermoplastic polyurethane’s (TPUs) tribol. properties by incorporating styrene-ethylene/butylene-styrene triblock copolymer (SEBS) via melt blending. Two TPUs with different molar masses, two compatibilizers SEBS-g-MA (C1) and SEBS-b-TPU (C2) and paraffinic oil were used in the formulated blends. The raw materials’ effect on the morphol., rheol., phys.-mech. and tribol. performance of TPU/SEBS blends was monitored. The phase morphol. achieved depended on the addition of mineral oil and compatibilizer agent type. The rheol. anal. showed a pseudo-liquid viscous behavior for all samples. However, this behavior was related to the compatibilizer type and molar mass of the TPU. No significant changes were observed between the compatibilizers C1 and C2 concerning the physicomech. properties. The fact that mineral oil is preferentially contained in the SEBS phase is the fundamental point to explain the blends phase morphol. and their rheol. and phys. behaviors. The swollen state SEBS modifies the TPU’s performance. It also allows tuning properties such as abrasion and increasing the friction coefficient, enabling promising applications for these thermoplastic elastomers blends. 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: 6683-19-8Application of 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 are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Application of 6683-19-8
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics