Miscellaneous Plastics Materials

Brydson, J.A.

doi:10.1016/b978-075064132-6/50071-1

Cited by 222 publications

(303 citation statements)

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“…6 (c). In this unit, four pins (5,6,7,8) and associated electrical circuits are used to measure the current of signals. In particular, two voltage dividers with the resistors R B /R A and R C /R D as well as the input pins 6 and 7 are connecting to realize the measurement function.…”

Section: Led Displaymentioning

confidence: 99%

Development of a force sensor working with MR elastomers

Kostidis

Zhang

et al. 2009

2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

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Section: Led Displaymentioning

confidence: 99%

Development of a force sensor working with MR elastomers

Kostidis

Zhang

et al. 2009

2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

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“…At the higher processing temperatures, lower values of torque are noted as a result of the temperature dependency of polymer melts. Melt viscosity is inversely related to the fractional free volume in the polymer melt, which increases from a small value at the glass transition temperature (Tg) linearly with increasing temperature [6]. In all cases, the higher screw speeds result in lower values of torque; however, this would not be expected due to the higher volumes of material being processed per unit time.…”

Section: Hot Melt Extrusionmentioning

confidence: 96%

Processing Stability and the Significance of Variation in Extrusion Speeds and Temperatures on SSB® 55 Pharma Grade Shellac for Oral Drug Delivery

Gately

Kennedy

2017

JMMP

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Abstract:The melt-extrusion process is utilized in the pharmaceutical arena for the manufacturing of a variety of dosage forms and formulations, including solid dispersions. This technology is considered an efficient and continuous dosage form manufacturing method. However, there are potential challenges mainly because, during hot-melt extrusion, polymers are subject to mechanical and thermal degradation. Mechanical degradation may be induced by the shear effects imposed by the rotating screw. Thermal degradation results from high temperatures and includes random scission, scission from the ends of the polymer and unzipping of substitute groups. This paper endeavors to understand the impact of thermal and/or mechanical components of the melt-extrusion process on the stability of a pH sensitive polymer, namely Shellac. Correlation between the screw speeds and processing temperature profile was examined in the context of the overall degradation profile of the polymer. The results suggest that the processing stability of Shellac was reliant on optimization of screw speed (rpm) and process temperature.

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“…Proses pengolahan material plastik ini menggunakan metode injection molding, yaitu metode dari pembentukan material termoplastik dimana material yang meleleh akibat panas dan gesekan didalam barrel diinjeksikan kedalam sebuah cetakan (mold), kemudian didinginkan oleh air atau oil sehingga produk mengeras [1].…”

Section: Pendahuluanunclassified