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Box-Behnken Design for Polycarbonate-Pigment Blending: Applications and Characterization Techniques
Jamal Alsadi1, Mohammed Taleb Obaidat1, Rabah Ismail1
1Engineering College, Jadara University, Irbid 21110, Jordan.
Polymers
|November 26, 2022
Summary
Optimizing polymer extrusion processing factors like feed rate, speed, and temperature is crucial for achieving uniform color dispersion in polycarbonate compounds. This study found specific parameters that minimize color variation and agglomerates for better material quality.
Area of Science:
- Polymer Science and Engineering
- Materials Science
- Color Science
Background:
- Incorporating pigments into polymers is essential for color, aesthetics, and interfacial properties.
- Effective pigment dispersion during polymer extrusion requires optimized processing parameters.
- Polycarbonate (PC) compounding with pigments presents challenges in achieving uniform color distribution.
Purpose of the Study:
- To optimize extrusion processing parameters for colored polycarbonate (PC) compounds.
- To investigate the impact of feed rate (FR), speed (Sp.), and temperature (temp.) on color dispersion.
- To identify optimal processing conditions for minimizing color variation and pigment agglomeration.
Main Methods:
- Utilized response surface methodology (RSM) with Box-Behnken design (BBD) for experimental design.
- Analyzed the influence of FR, Sp., and temp. on tri-stimulus color characteristics.
- Employed MicroCt scanner, SEM, DOM, rheology, FT-IR, and color spectrometry for characterization.
Main Results:
- The three processing factors significantly impacted the tri-stimulus color characteristics.
- Optimal processing conditions were identified at a center point: 25 kg/h FR, 750 rpm Sp., and 255 °C temp.
- Excellent color dispersion with minimal agglomerates and color differences was achieved at the center point.
Conclusions:
- Optimized extrusion parameters significantly improve color dispersion and uniformity in pigmented PC.
- Understanding the relationship between processing conditions and color output is key to minimizing variations.
- This optimization aids in reducing waste and improving the quality of recycled polymer compounds.
Keywords:
DOMFT-IRSEMdispersionexperimental design (Box–Behnken design)micro-Ct scannerprocessing at center point (G.T.)rheologyspectrophotometerstatistical optimizations
