Since PRs appear as components of polymeric compositions, in nearly all cases it is important to know their surface characteristics, and particularly, their acid-base properties.
However, it is also proven that in most cases the acid-base interactions play the main role in the formation of interfacial forces by adhesive bonding between adhesives and plastics [1].
Although the acid-base balance of our blood is constant, the pH inside our cells has a somewhat broader range, from slightly acidic to slightly alkaline.
Most metabolic, respiratory, and acid-base alterations were minor, but a small number of birds exhibited values (eg, temperature-corrected pH <7.3, lactate >10 mmol/L) that could be of concern if combined with other adverse conditions.
From the research conducted (Dragnea, Cordun Teodorescu-Mate, 1990, quoted by Dragnea, Teodorescu-Mate, 2002) on a team of water polo players at the prepubertal age and the early stage of puberty, it has been found that the acid-base balance undergoes unessential changes (within normal limits) after heavy efforts.