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American Coatings Show Best Paper leads off May Issue of Journal of Coatings Technology and Research.

The May issue of the Journal of Coatings Technology and Research (Vol. 10, No. 3, 2013) features original research and brief communications that address some of the most pressing topics in the coatings industry today.

Leading off the issue is the 2012 American Coatings Show award-winning paper. Authored by Antony Van Dyk and Alan Nakatani, of Dow, the article discusses the shear rate-dependent structure of polymer-stabilized titanium dioxide (Ti[0.sub.2]) dispersions. According to the authors, paint properties such as opacity, gloss, stability, and color acceptance depend on the quality of pigment dispersion. For this study, they measured the shear rate-dependent structure of Ti[0.sub.2] dispersions stabilized with commercial polymer dispersants in water. Two different Mw polyacid dispersants and two different Mw acrylate copolymers were used.

The experiments were conducted at the NIST Center for Neutron Research on the perfect crystal diffractometer for ultra-high resolution small-angle neutron scattering (USANS) measurements. The results for Ti[0.sub.2] scattering and rheology showed that shear-induced dissociation occurs for certain dispersants and shear-induced association of Ti[0.sub.2] clusters is observed for other dispersants. These results suggest new ways to consider dispersant selection for paints and the quality of pigment dispersions.

The listing of articles featured in the May issue include:

2012 American Coatings Show Best Paper--Shear Rate Dependent Structure of Polymer Stabilized Ti[0.sub.2] Dispersions--Antony Van Dyk and Alan Nakatani

Rheological Studies of Two-Component High Build Epoxy and Polyurethane Based High Performance Coatings--Ajit Deka and Nirmalya Dey

Comparison of Electrolyte Effects for Poly(3,4-ethylenedioxythiophene) and Poly(3-octylthiophene) by Electrochemical Impedance Spectroscopy and Polymerization Parameters with Morphological Analyses on Coated Films--Murat Ates, ToIga Karazehir, Fatih Arican, and Nuri Eren

High Performance Moisture Cured Poly (Ether-Urethane) Amide Coatings Based on Renewable Resource--Cottonseed Oil--Pawan D. Meshram, Ravindra G. Puri, Amol L. Path, and Vikas V. Gite

Dependence of Dirt Resistance of Steel Topcoats on Their Surface Charac-teristics--Sainan Li, Guangxin Gu, Shuxue Zhou, and Limin Wu

A New Phosphate Pretreatment Process for Adhesive Bonding of Magnesium AZ31Sheets--Ming-Zhe Bu, Zhong-Xia Liu, Ting-Ting Wan, and Pei-Chung Wang

Antigraffiti Polyurethane Coating Containing Fluorocarbon Side Chains Grafted Polymethylsiloxane--Hu Liu, Baosong Fu, Yi Li, Qianqian Shang, and Guomin Xiao

Preparation, Characterization and Antibacterial Activity of Photocured Thymol-doped Acrylic Resins--Micaela Degli Esposti, Francesco Pilati, Moreno Bondi, Simona de Niederhausern, Ramona lseppi, and Maurizio Toselli

Development of Heat-Resistant Anticorrosion Urethane Siloxane Paints--Moussa Tamboura, Anna M. Mikhailova, and Meng Qiu Jia

The Effectiveness of an Antifouling Compound Coating Based on a Silicone Elastomer and Colored Phosphor Powder against Navicula Species Diatom--Shan Cao, Jiadao Wang, Yan Zhang, and Darong Chen

Bond Strength of Hybrid Sol-Gel Coatings with Different Additives--Mousa May, Heming Wang, and Robert Akid

A New Electroless Ni Plating Procedure of Iodine-Treated Aramid Fiber--Ummul Khair Fatema and Yasuo Gotoh

Brief Communication--Migration of Hindered Amine Light Stabilizers in Automotive Clearcoats--M.E. Nichols and S.L. Kaberline

Brief Communication--The Dependence of Pendulum Hardness on the Thickness of Acrylic Coatings--Xiaoyang Ma, Zemin Qiao, Zhifeng Huang, and Xinli Jing

Members of ACA can access the articles by logging in at www.paint.org and following the Publication area link from "Newsletters and Periodicals" to JCTR Archives. Clicking on the Springer link and following the JCTR path will enable members to view and download the archive of JCTR articles, as well as the most recent issue.

For information on subscribing to JCTR, contact publications@paint.org.
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Title Annotation:ACA Update
Publication:JCT CoatingsTech
Date:May 1, 2013
Words:564
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