Analytical Strategies for Ink Formulation
White Paper Jun 16, 2015
Malvern Instruments Limited
Controlling the performance of an ink is a complex optimization challenge.Understanding how features of the system, the dispersed particle size in particular, impact stability and behavior during each stage of the printing process is crucial for effective formulation. This white paper offers practical guidance on using a range of analytical techniques, including rheology, and particle size and zeta potential measurement to generate the required knowledge.
Over the past 30 years the use of commercial and industrial inks has changed substantially. In particular, the maturation of inkjet technology has revolutionized printing. From office printers through to industrial coding and marking systems, inks are now required to meet demanding performance targets, for a wide range of different applications.
Inks are complex dispersions or emulsions consisting of dyes or pigments, and other components, suspended within a continuous phase. Formulation is complicated by the fact that the properties of these components impact multiple aspects of ink performance. For example, the particle size of a suspended pigment determines the hue, gloss and weatherability of the finished coating. At the same time it also affects the stability of the ink and its flow properties (viscosity). Ink formulation is an exacting science and relies on gathering relevant data from multiple analytical techniques to achieve an optimal solution.
In this white paper, experts from Malvern Instruments explore analytical strategies that support formulation and provide practical guidance on gathering data to:
• characterize ink components
• quantify performance characteristics such as jetability and tendency to drip
• engineer formulation stability
• control manufacture.
• Case studies are presented to illustrate the value of different analytical techniques in accelerating formulation to a successful conclusion.
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