November 12, 2024; 1:00PM–2:00PM EST Time
Online
Rheometers or dynamic mechanical analyzers that are able to combine two drive units (rotational and linear drive) in one setup have opened new horizons in characterization of polymeric materials. The Multidrive concept enables various modes of operation by using different combinations of the top and bottom drive in the system. Three different testing modes can be realized when using the upper rotational motor and additionally a second rotational motor as the bottom drive.
While the use of the upper rotational motor allows one to perform measurements in combined motor transducer (CMT) mode, the use of two rotational motors allows one to work in the separate motor transducer (SMT) mode and the counter movement mode on one device. CMT mode not only allows all tests and options a single drive rheometer can do but advanced powder rheology characterization in the fluidized dynamic state through the use of a classical pressure drop device attached to the rheometer are also possible. A ring shear cell attached to the rheometer in CMT mode allows one to do quasi-static characterization of granular materials at elevated temperatures and humidities.
In the separate motor transducer (SMT) mode the bottom motor acts as the actuator and the top motor acts as the torque transducer. A SMT mode has advantages in sensitivity under certain measurement conditions and allows the use of special tools such as a cone-partitioned-plate (CPP), which enables measurements with edge fracture prone samples, extended frequency sweeps with soft materials such as pressure sensitive adhesives where inertia of the measuring drive can effect results etc., In counter movement mode both motors rotate or oscillate in opposite directions which enables the creation of a stagnation plane in the sheared sample which could be beneficial for investigation of Taylor-Couette instabilities or extending the range of shear rates for high shear rheology applications or for rheo-microscopy, since the structures under investigation are not moving out of the field of view when shear is applied. In addition, combining the upper rotational motor with a linear drive in the bottom permits one to apply force and deflections in the axial direction which has several advantages. For instance, the combination of both linear and rotational measurement makes it possible to determine the complex Young’s modulus |E*| and the complex shear modulus |G*| for a single sample in one continuous measurement which further helps determine the viscoelastic Poisson’s ratio for isotropic materials.
In the case of anisotropic materials modulus information in both longitudinal and transversal directions can be obtained which could be particularly useful to evaluate anisotropy present in the sample. In this talk benefits of having such a modular device configuration for comprehensive material characterization in different modes will be showcased via different application testing examples.
If you can't attend one or several sessions live, or if you want to review some concepts, the recordings will be available after each session.
The "Advanced Material Characterization: Rheology and DMA Using a Combined Axial-torsional Multidrive System" webinar is intended for professionals involved in the research, development, and testing of polymeric materials. This includes professionals from various industries such as materials science, automotive, aerospace, packaging, pharmaceuticals, and manufacturing, among others. It is also suitable for quality control experts, lab technicians, and academic researchers looking to explore advanced rheological techniques and comprehensive material characterization methodologies.
If you answered yes to any of these questions, this webinar is designed for you!
All Attendees | FREE |
Abhishek Shetty, Ph.D.
Leads Scientist
Anton Paar USA
Senior research and development professional with an advanced degree (PhD Chemical Engineering) and several years of experience spanning multiple multinational companies. Expertise in new product and process development, leading large commercialization teams, discovery projects, new technology evaluation and new product innovation. As Lead Scientist, Rheology at Anton Paar my current role includes work with business and collaboration partners in academia and industry to discover new testing needs, assess market potential and price point, and provide dynamic technical leadership to innovations from inception through commercialization. I work closely with teams across the globe to develop new advanced applications pertaining to rheology using advanced rheometric tools. In my current role I also present papers at several technical conferences and also serve as the main contact point for the scientific community in the US representing the Antor Paar, USA rheology department.
Expertise
Complex fluid rheology, Powder Rheology, Granular flow, Dynamic Mechanical Analysis, Structure-property relationships, Polymer science and dynamics, Fluid mechanics, Microfluidics, Surfactant science and technology, Disinfection chemistry formulations-(Hypochlorite, Peroxides, Peracids and Quat), Dynamic and Static Light scattering, Depolarized light scattering, Water soluble films, Solids processing and handling, Agglomeration, Wet Granulation, Foam Granulation, Binders and Additives,Colloidal suspensions, Microscopy, Viral diagnostics, Real-time polymerase chain reaction (PCR), droplet based PCR, Clean room equipment: Reactive ion etcher, mask wafer aligner, micro channel fabrication using photoresist SU-8 and soft lithography.
Computer Skills
Proficient in COMSOL, MINITAB, STATEase, MATLAB, Mathematica, Microsoft Office, Excel, Powerpoint, BASIC, C programming.
For questions, contact Iván D. López .
This educational program is provided as a service of SPE. The views and opinions expressed on this or any SPE educational program are those of the Speaker(s) and/or the persons appearing with the Speaker(s) and do not necessarily reflect the views and opinions of the Society of Plastics Engineers, Inc. (SPE) or its officials, employees or designees. To comment or to present an opposing or supporting opinion, please contact us at info@4SPE.org.
Refund Policy for SPE Webinars
No refunds are available for this SPE Course.
Copyright & Permission to Use
SPE may take photographs and audio/video recordings during the conference, pre-conference meetings and receptions that may include attendees within sessions, networking areas, exhibition areas, and other areas associated with the conference both inside and outside of the venue. By registering for this event, all attendees are providing permission for SPE to use this material at its discretion on SPE's websites, marketing materials, and publications. SPE retains ownership of copyright to all photographs and audio/video recording obtained at this event and attendees may request copies of any material in which they are included.
Anti-Trust Statement