Related Products of 34381-71-0, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 34381-71-0, Name is (S)-(-)-1-Methyl-2-pyrrolidinemethanol, SMILES is OC[C@H]1N(C)CCC1, belongs to amides-buliding-blocks compound. In a article, author is Kabeshov, Mikhail A., introduce new discover of the category.
Polyimides with low coefficient of thermal expansion derived from diamines containing benzimidazole and amide: Synthesis, properties, and the N-substitution effect
Three novel diamines, incorporating benzimidazole and amide moieties, namely 4-amino-N-(5-amino-benzimidazol-2-yl)-benzamide (6a), 4-amino-N-(5-amino-1- methyl-benzimidazol-2-yl)-benzamide (6b), and 4-amino-N-(5-amino-1-phenyl -benzimidazol-2-yl)-benzamide (6c), were designed and synthesized. A series of poly(benzimidazole-amide-imide) (PBIAI) films were prepared from the resulting diamines and 4,4-biphthalic dianhydride (BPDA). These flexible polyimides (PIs) showed high glass transition temperatures (T-g = 353-379 degrees C), low coefficients of thermal expansion (CTE = 3.7-12.3 ppm K-1) and good mechanical properties (sigma = 152-207 MPa and E = 4.5-7.7 GPa), promising candidates for applications in flexible-display substrates. Furthermore, the data guided a feasible method to enhance T-g and reduce CTE by introducing benzimidazole and amide units into PI main chains, and the effect of different N-substituents on performance was revealed.
Related Products of 34381-71-0, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 34381-71-0.