Recent in Chemistry (page 9 of 9)

Comparatively Speaking: Fatty Acids vs. Ozone Acids

Industry expert Tony O'Lenick describes the differences between the formation of fatty acids by saponification followed by acidulation, and ozone acid by the reaction of unsaturated acids with ozone.

Strong, Self-healing Hydrogel Created for Tissue Engineering

Researchers from the University of Tokyo have created a strong, self-healing hydrogel with applications in tissue engineering and drug delivery. The material incorporates a binder made from long chains of polyethylene glycol, an ingredient commonly used in skin care.

Comparatively Speaking: Proteins vs. DNA vs. Sugars

Industry expert Tony O'Lenick discusses the structural differences between the biopolymers DNA, sugars and proteins, which are all important to life but function differently in the cell and in cosmetic products.

Comparatively Speaking: Radical vs. Ring-opening Polymerization

Industry expert Tony O'Lenick discusses the differences in chemistry between radical polymerization and ring-opening polymerization.

Comparatively Speaking: Compounds vs. Compositions

The difference between a compound and a composition has a dramatic effect upon the ability to formulate. The vast majority of raw materials used in formulations are not compounds, but rather complex mixtures called compositions.

Comparatively Speaking: Static vs. Dynamic Measurement of Surface Tension

Surface tension determines the properties of formulations. How does one measure surface tension? Since, realistically, there is more than one surface tension in a liquid, measurements can vary depending upon the method used. Here, industry expert Tony O'Lenick discusses static and dynamic approaches to measuring surface tension.

Comparatively Speaking: Isotactic vs. Syndiotactic vs. Atactic in Polymers

Anthony J. O'Lenick, Jr., asks Thomas O'Lenick, a doctoral candidate in polymer chemistry at the University of Tennessee, to explain the difference between isotactic, syndiotactic and atactic polymers.

Comparatively Speaking: Humectants vs. Emollients vs. Occlusive Agents

Tony O’Lenick asks industry expert Kelly Dobos of Kao Brands to explain the difference between humectants, emollients and occlusive agents.

Comparatively Speaking: Dimethicone/Vinyl Dimethicone Copolymer vs. Bis-Vinyldimethicone/Dimethicone Copolymer

Tony O'Lenick notes that the nomenclature for silicone elastomers and resins is complicated, and explains the difference between dimethicone/vinyl dimethicone copolymer and bis-vinyldimethicone/dimethicone copolymer.

Is Cosmetic Science Really "Bad"? Part II: Detecting Baloney Science

This column is the second of four examining whether cosmetic science is really as bad as it is portrayed. Here, the author uses Michael Shermer's "Baloney Detection Kit" to identify science vs. nonsense. Future columns will apply this kit to cosmetic science.

Understanding Water

Recently, the US Department of Energy's SLAC National Accelerator Laboratory and universities in Sweden and Japan examined the molecular idiosyncrasies of water; their work suggests the textbook model of water at ambient conditions was incorrect.

Comparatively Speaking: Dimethicone vs. Methicone

Dimethicone refers to a silicone compound that has “D” units, meaning only silicon atoms with two methyl groups attached. A methicone completely lacks the “D” unit.

Can't find what you're looking for? Try searching, or looking through past issues.