by use of standard phosphoramidite chemistry (15,16), with a brominated deoxyuridine substituted for the thymidine (T) usually found in DNA; these photoactive residues participate in covalent bond
The DSC was performed on the neat un-crosslinked adduct to highlight its own ability to open and rearrange the covalent bonds
between furan and maleimide.
Having achieved surface wetting, adhesion can be further enhanced beyond weak intermolecular attraction by forming covalent bonds
between the coating and the substrate.
Explain that tertiary shape is also a result of covalent bonds
or ionic attractions like Hydrogen bonding between "R" groups.
In most organic reactions, one or more covalent bonds
are broken, this normally causes a conversion of a functional group in the molecule from one category to a higher one.
This work started with the concept that star-shaped polymers incorporating weak covalent bonds
would, perhaps reversibly, dissociate at high temperatures or high-shear rates.
There are covalent bonds
, which are strong and don't readily reform once broken; and noncovalent bonds, which are weaker and more dynamic.
Moreover, the POSS/PMMA hybrid materials in which the reactive POSS and PMMA combined with covalent bonds
exhibited improvement of mechanical properties and noncompromised light-transmission was observed.
Phosphine, PR3, is a three-coordinated organophosphorus compound comprising three covalent bonds
and an unshared electron pair.
An added benefit of the recycled glass product is that the two part polymer used to bind the glass forms natural covalent bonds
with hydrocarbons - which means that when oil or oily water passes through the surface, the oil is bound while the water continues through.
Strong covalent bonds
formed between the polymers' oxygen atoms and aluminum atoms along the edges of the clay sheets, joining them laterally.
Thus, crosslink density in the case of carbon-carbon covalent bonds
has no influence on electrochemical stability.
This is because the layers are held together through so called van der Wls interactions which are relatively weak forces as compared to other bonding configurations such as covalent bonds
. Once isolated these atomically thin layers maintain mechanical integrity (i.e.
Silane coupling agents are known to promote bonding between two incompatible surfaces by forming covalent bonds
. Based on the hypothesis that hydrogen bonding plays a large role for the adhesion at the interface between cementitious materials and epoxies, and is responsible for the loss of adhesion under humid environments by displacement of epoxy with water, it is expected that the coupling agents will change the main bonding types from hydrogen bonds to stronger covalent bonds
, which will result in improved durability.