Since PA66 is a highly polar polymer, polar solvents have an affinity to PA66 because these molecules can form H-bonds with polyamide chains.
The existence of H-bonds in the amorphous phase of PA66 gives the polymer good mechanical properties as well as a relatively high [T.
An adenine on one strand can line tip its H-bond donors and acceptors with a thymine on the opposite strand, forming a total of 2 H bonds: and a guanine can line up similarly with a cytosine, forming 3 H-bonds.
Recall last month's "not-really-accurate-but-mentally-helpful" analogy of H-bonds as being like tiny magnets.
The results of the simulations show that the 17-OH group of testosterone forms H-bonds
to THR-877 and ASN-705 while the 3-Keto group H-b onds to GLN-711 and ARG-752.
TSA] membrane did not show this behavior, suggesting the occurrence of H-bonds between polyaniline amines and PU.
g] with polyaniline can be explained, considering the formation of H-bonds between polyaniline amine groups and PU urethane groups as shown in Fig.
r]) is a constant characteristic of H-bonds
, and N is the effective number of H-bonds
per unit volume involved in taking up the strain under uniaxial stress conditions.
Secondary structure occurs when, let's say, Mary's carboxyl group H-bonds
to Joe's amino group.
These follow three rules: each base can only participate in at most one h-bond; h-bonds may not cross; and the bases that form an h-bond may not be too close to each other in the primary structure.
Here, the distance between every two bases that are connected by an h-bond is > k if and only if the corresponding Motzkin path is in [M.
In human deoxyhemoglobin, a sulfate anion is found anchored to the [beta]-chains by a complex network of H-bonds
and electrostatic interactions with the N-terminus and [beta]Lys82.