Related Experiment Video
Updated: Jun 4, 2025

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
Published on: November 30, 2020
Evaluating Processing Parameter Effects on Polymer Grades and Plastic Coloring: Insights from Experimental Design and
Jamal Alsadi1, Ameen Alawneh2, Ahmed Ali Khatatbeh3
1Faculty of Engineering, Jadara University, Irbid 21110, Jordan.
Abstract:
Resolving material and processing issues is essential to improving formulations and attaining accurate color matching in blending. Two transparent polycarbonate resins made up the blend: PC1, which made up 33% of the mixture with a Melt Flow Index (MFI) of 25 g/min, and PC2, which made up 67% of the mixture with an MFI of 65 g/min. This study employed data mining and a well-structured experiment using Design of Experiment (DoE) software-8 to investigate the effects of various processing temperatures on identical material formulations. The primary objective was to understand the influence of the operating conditions on the viscosity of a red letdown pigment made of polycarbonate, both with additive (WA) and without additive (WOA). The study analyzed the effects of processing parameters and rheological properties using a co-rotating twin-screw extruder. Rheology, Fourier-Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM) were employed to compare results and evaluate their impact on minimizing color discrepancies and improving Single-Pass Color Uniformity.
Related Concept Videos
Polymer Classification: Architecture
Polymer Classification: Crystallinity
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Polymer Classification: Stereospecificity
Types of Step-Growth Polymers: Polyesters
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Step-Growth Polymerization: Overview
Many natural and synthetic polymers are produced by...
Molecular Weight of Step-Growth Polymers
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...

