By Sabu Thomas, Deepalekshmi Ponnamma, Ajesh K. Zachariah
This publication offers with the polymers, various tools of synthesis, and synthesis of composites, in addition to the various suggestions used for polymer characterization. many of the world’s industries extract the anomalous houses of polymers to make very good affordable fabrics. due to this, the categories of polymers, their processing, and the research in their numerous homes are very major. Readers will achieve a radical wisdom in regards to the processing of other different types of polymers and composites made of them, in addition to their numerous functions. compatible for school room use yet specifically very important for researchers, this publication addresses:
- Adhesion of amorphous polymers with vitrified bulk and floor glass transition
- Functionalized biopolymers and their applications
- A new synthesis of p-Cresol-Adipamide-Formaldehyde copolymer resin and its purposes as an ion-changer
- Correlating functionality of business viscosity modifiers for formulating shear sturdy commercial lubricants
- Synthesis of phthalonitrile polymers in ionic liquid and microwave media
- Studies on nanocomposite polymer electrolytes doped with Ca3(PO4)2 for lithium batteries
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Additional resources for Polymer Processing and Characterization
Shear Stability Shear stability is one of the parameter that is used for assessing the performance of the polymer under standard test condition. The shear stability of the blend, containing polymer is calculated using Equation (2). éæ ö êëè V 1 ø ù úû V2 Shear stability = êççç ÷÷÷´100ú (2) where, V1 =Kinematic viscosity of the viscosity index improver containing oil before shearing 38 Polymer Processing and Characterization V2 =Kinematic viscosity of the viscosity index improver containing oil after shearing Shear Stability Index Shear stability index is an indicator of stability of the industrial oil under severe stress condition and it is assessed as per standard test procedure ASTM D6278.
2005). The use of appropriate polymeric additive allows a lubricating oil to meet certain high temperature viscosity target while maintaining its low temperature flow property. The VII are usually high molecular weight polymer, broadly classified into two general categories: Olefin Based Copolymer (OCP) including Polystyrene and Hydrogenated Diene and Ester based which includes Polymethaacrylate (PMA). When dissolved in base oil, these high molecular weight polymers increase the viscosity index of the base oils.
30 Polymer Processing and Characterization From the result it reveals that with decrease in atomic number, the ion uptake capacity is increased. In case of Cd (II) and Pb (II) purely electrostatic factors are responsible. The ion uptake capacity of Cd (II) is lower owing to the large size of its hydrated ion than that of Cu (II). The sterric influence of the methyl group and hydroxyl group in p-CAF resin is probably responsible for their observed low binding capacities for various metal ions. 0 may be due to the formation of more stable complex with chelating ligands.