Posted: March 13, 2008

Zetasizer Nano Supports Development of Novel Coating Pigment for Paper Industry

(Nanowerk News) Researchers at TopChim, a developer of materials and technology solutions for the paper industry, have integrated the Zetasizer Nano particle characterization system from Malvern Instruments into the company’s nanoscience development program. Following five years intensive R&D, one of the first nanoparticle technologies to result from the program was introduced commercially last year.
The patented NanoTope is for paper production surface treatment and has been used by Mondi Business Paper in the development of its newest neox paper. This unique and versatile product has the glossy finish of a traditional coated paper, but offers the high whiteness and stiffness of an uncoated paper. The new paper is particularly valuable for high quality colour laser printing, with a range of benefits including the better fixing of ink, which leads to a higher resolution and a denser printed image.
NanoTope products are stable aqueous dispersions of low particle size plastic pigments, ranging from 30-150 nm. They can be used alone or in combination with carrier inorganic pigments such as kaoline and calcium carbonate for porous surfaces. The Zetasizer Nano’s role in the development and manufacture of NanoTope has been two-fold: first in supporting the creation of a stable monodisperse suspension of nanoparticles of defined size; and second in quality control, to ensure the production of consistent materials. This has resulted in good understanding and control of those parameters affecting product performance, shifting quality assurance away from simple reliance on end product testing.
President and R&D manager Henk Van den Abbeele of TopChim: “The Zetasizer Nano has been crucial to our development of new technologies. We use it to monitor a number of aspects of the products, the most important of which is stability as this is a vital measure of product quality. The impressive repeatability of the system gives us complete confidence in our results. As we continue to introduce nanotechnology solutions in a variety of performance applications, including innovative barrier coatings for packaging, printing inks and textile treatment, the Zetasizer Nano will play a crucial role.”
Malvern’s market leading Zetasizer Nano measures two of the most significant parameters for analyzing nanoparticle dispersions – particle size and zeta potential. It enables non-invasive particle size characterization at high concentration with minimal dilution, and is therefore especially useful for studying aggregates or agglomerates, which are at risk of breakdown when any sample preparation is required. The most popular light scattering system available for nanoparticle characterization, it offers the highest sensitivity combined with real ease of use, measuring particles at the scale of 1 nanometre and below, with minimal training.”
About TopChim
TopChim, based in Belgium and operating worldwide, is a research company focused on innovation for the paper coating industry. 10 years of knowledge in coating applications result today in a unique expertise for coating rheology, barrier coatings and printability improvement. The research efforts of TopChim’s Nanoscience department results today in the production of Nano hybrid pigments on industrial scale.
About Malvern Instruments
Malvern Instruments is a global company that develops, manufactures and markets advanced analytical systems used in characterizing a wide variety of materials, from bulk powders to the latest nanomaterials and delicate macromolecules. Innovative technologies and powerful software produce systems that deliver industrially relevant data enabling customers to make the connection between micro (eg particle size) and macro (bulk) material properties (rheology) and chemical composition (chemical imaging). Malvern laboratory, on-line and in-line solutions are proven in sectors from cement to pharmaceuticals and support the understanding, improvement and optimization of many industrial processes. Headquartered in Malvern, UK, the company has subsidiary organizations in all major European markets, North America, China, Korea and Japan, key partnerships in India, a global distributor network and a number of applications laboratories around the world.
Source: TopChim
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