Nanotack test: adhesive behavior of single latex particles |
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| Institution: | 1. Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226 031, India;2. Academy of Scientific and Innovative Research, New Delhi 110001, India;1. Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry, Universidad de Córdoba, Spain.;2. Department of Chemistry and Pharmacy, University of Sassari, Italy. |
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| Abstract: | We present an investigation of the adhesive properties of latex films with nanometric thickness through force spectroscopy using an atomic force microscope (AFM). The AFM tip can be used to indent and excite mechanically one single latex particle, and provides an adhesion test which resembles macroscopic probe tack test, but at nanometric scales. We show that this AFM nanotack test can be analyzed quantitatively, normalizing the total rupture energy by the contact area formed during the indentation step. This contact area depends upon the mechanical properties and environment of the latex particle. |
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