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Chemistry
New in Chemistry (page 3 of 23)
Oct 05, 2011 | 01:40 PM CDT
Nanocrystal Liquid Identification
By: Katie Anderson (Schaefer), Cosmetics & Toiletr…
Watermark Ink (W-Ink) utilizes chemical and optical properties of nanostructured materials to distinguish liquids based on surface tension. The nanostructured material is called an inverse opal, which is a layered glass structure with an internal network of ordered, interconnected air pores.
Oct 04, 2011 | 03:49 PM CDT
Comparatively Speaking Compound vs. Composition
By: Anthony J. O'Lenick Jr., Siltech LLC
Here, industry expert Tony O'Lenick explains the difference between a compound and a composition, as understanding their differences can lead to better formulation.
Jun 30, 2011 | 11:40 AM CDT
Improving the Solubility of Benzoyl Peroxide: A Review
By: James Ziming Sun, PhD, Diversapack of Californ…
In this review, the authors examine studies relating to the solubility of BPO. The clinical trials discussed show that compared with suspended BPO, BPO solubilized by dimethyl isosorbide reduced P. acnes and decreased both inflammatory lesions/irritation and the emergence of antibiotic-resistant P. acnes strains. This reveals the importance of solubilizing BPO for improved efficacy and safety.
Jun 03, 2011 | 05:21 PM CDT
Comparatively Speaking: Natural vs. Oxo vs. Ziegler Alcohols
By: Anthony J. O'Lenick Jr., Siltech LLC
Industry expert Tony O'Lenick explains the differences between natural, oxo and ziegler alcohols to help the formulator better understand the source of their raw materials.
May 11, 2011 | 07:48 AM CDT
Comparatively Speaking—Entanglement vs. Overlap
By: Anthony J. O'Lenick Jr., Siltech LLC, and Thom…
This edition of "Comparatively Speaking" describes the difference between the critical molecular weight of entanglement and critical concentration of overlap. These concepts are important for formulators to grasp since they deal with altering the physical properties of a finished product.
Apr 12, 2011 | 03:13 PM CDT
Comparatively Speaking: Hysteresis vs. Syneresis
By: Anthony J. O'Lenick Jr., Siltech LLC; and Thom…
Industry expert Tony O'Lenick defers to his son Thomas O'Lenick, technical director at SurfaTech Corp., to explain the difference between hysteresis and syneresis, as they can affect the aesthetics and physical properties of a formulation.
Feb 16, 2011 | 07:49 AM CST
EC Establishes Nanomaterials Repository
The European Commission's Joint Research Centre (JRC) has established a repository of 25 different reference nanomaterials, including titanium dioxide, to support safety assessments and ensure consumer protection and confidence in various applications and products.
Feb 15, 2011 | 05:14 PM CST
Comparatively Speaking: Wetting/Eye Irritation in Trisiloxane vs. Dimethicone Copolyol
By: Anthony J. O'Lenick Jr., Siltech LLC
In a previous "Comparatively Speaking" column, Tony O'Lenick explained the differences between trisiloxane and dimethicone copolyol in terms of surface tension. Here he explains the differences in terms of wetting and eye irritation.
Feb 02, 2011 | 10:44 AM CST
Comparatively Speaking: Wetting vs. Superwetting
By: Anthony J. O'Lenick Jr., Siltech LLC
In this edition of "Comparatively Speaking," industry expert Tony O'Lenick discusses the terms wetting and superwetting in relation to the ability of a surfactant to wet a substrate.
Jan 18, 2011 | 03:18 PM CST
IUPAC and UNESCO Establish the International Year of Chemistry 2011
The International Union of Pure and Applied Chemistry (IUPAC) and the United Nations Educational, Scientific and Cultural Organization (UNESCO) have partnered to establish the International Year of Chemistry 2011 (IYC 2011).