Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 5625-37-6, Name is 2,2′-(Piperazine-1,4-diyl)diethanesulfonic acid, SMILES is O=S(CCN1CCN(CCS(=O)(O)=O)CC1)(O)=O, belongs to piperazines compound. In a document, author is Chen, Yu-Hao, introduce the new discover, Product Details of 5625-37-6.
Synthesis and characterization of low-temperature polyamide 6 (PA6) copolyamides used as hot melt adhesives and derived from the comonomer of novel aliphatic diamine bis(2-aminoethyl) adipamide and adipic acid
A novel aliphatic PA6 copolyamide (PA6(BAEA/AA))-based hot melt adhesive was synthesized from epsilon-capmlactam with the organic salt of bis(2-aminoethyl) adipamide (BAEA) and adipic acid (AA), with BAEA/AA content ranges from 5 to 15 mol%. The chemical structures of BAEA diamine, BAEA/AA organic salt, PA6(BAEA/AA) copolyamides, and neat PA6 were obtained using FT-IR and 1H NMR. Determined by the comonomer compositions, the relative viscosity (eta(r)) and molecular weight (M-w) of the PA6(BAEA/AA) were from 2.29 to 2.74 and from 14,530 to 19,500 g mol(-1) , respectively. Adding the BAEA/AA structure strongly affected the crystallization behavior and thermal properties of the copolyamides. DSC results revealed that the melting temperature (T-m) of the copolyamides declined as the mole% of BAEA/AA increased in the range 5-15 mol%, and a TGA test revealed that the thermal decomposition of the copolyamides was similar to that of neat PA6. The T-m , glass transition temperature (T-g), and thermal stability (T-d5%) with a BAEA/AA salt content of 10 mol% had the lowest values of 162.2, 40.3, 354.6 degrees C, respectively, while the fusion enthalpy (Delta H-m) was lowest at 15 mol% (21.2 Jg(-1)). Most remarkably, PA6(BAEA/AA) exhibits much better mechanical properties such as tensile strength (33.6-52.6 MPa) and elongation at breakage (114.7-584.5%), than the PA6 homopolymer. The peel strength of PA6 reached a maximum value of 53.4 N cm(-1) at 10 mol% of BAEA/AA salt, and this value is better than those of commercial hot melt adhesives.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 5625-37-6 is helpful to your research. Product Details of 5625-37-6.
Reference:
Piperazine – Wikipedia,
,Piperazines – an overview | ScienceDirect Topics