Effect of Surface Modification on the Dispersion, Thermal Stability and Crystallization Properties of PET/CaCO3 Nanocomposites
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Wei Gao
Abstract
In order to improve the dispersion and increase the compatibility between CaCO3 nanoparticles and a polyethylene terephthalate (PET) matrix, hydrophobic calcium carbonate (CaCO3) nanoparticles were successfully prepared via a carbonization reaction with stearic acid (SA) as the modifying agent. PET/CaCO3 nanocomposites were prepared by further in situ polymerization of purified terephthalic acid (PTA), ethylene glycol (EG) and CaCO3 nanoparticles. The surface modification of CaCO3, the microstructure and the properties of nanocomposites were investigated by water contact angles measurements TEM, FTIR, XRD, SEM, TGA and DSC. SEM examination of the fractured surfaces of nanocomposites showed that CaCO3 modified by SA achieved well dispersed in the PET matrix. Moreover, compared to the nanocomposite filled with the blank CaCO3, the resulting nanocomposite filled with the modified CaCO3 exhibit a better thermal stability and a superior crystallization property.
Kurzfassung
Zur Verbesserung der Dispergierung und zur Steigerung der Kompatibilität zwischen CaCO3-Nanopartikeln und der Polyethylenterephthalat-Matrix (PET-Matrix) wurden hydrophobe Calciumcarbonat-Nanopartikel (CaCO3-Nanopartikel) erfolgreich über die Karbonisierung mit Stearinsäure (SA) als Modifizierungsmittel hergestellt. Die Nanokomposite aus PET/CaCO3 wurde durch weitere in-situ-Polymerisation von gereinigter Terephthalsäure (PTA), Ethylenglykol (EG) und CaCO3-Nanopartikel hergestellt. Die Oberflächenmodifikation des CaCO3, die Mikrostruktur und die Eigenschaften der Nanokomposite wurden mit Hilfe von Kontaktwinkelmessungen mit Wasser, TEM, FTIR, XRD, SEM, TGA untersucht. Die rasterelektronenmikroskopische Untersuchung der Bruchflächen der Nanokomposite zeigte, dass das mit SA modifizierte CaCO3 in der PET-Matrix gut dispergiert war. Darüber hinaus besitzt der mit dem modifizierten CaCO3 gefüllte Nanokomposit gegenüber dem Nanokomposit, der mit nicht modifiziertem CaCO3 gefüllt ist, eine bessere thermische Stabilität und eine hervorragende Kristallisationsfähigkeit.
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© 2017, Carl Hanser Publisher, Munich
Articles in the same Issue
- Contents/Inhalt
- Contents
- Detergent/Enzymes
- Lactobacillus brevis Lipase: Purification, Immobilization onto Magnetic Florosil NPs, Characterization and Application as a Detergent Additive
- Study on the Interaction Between Cellulase and Surfactants
- Physical Chemistry
- Study of Ionic Liquid Microemulsions: Ethylammonium Nitrate/TritonX-100/Cyclohexane
- Synergistic Effect of Cationic Surfactants on the Rheological Behavior of Erucyl Amidosulfobetaine
- Microscopic Evidence for the Correlation of Micellar Structures and Counterion Binding Constant for Flexible Nanoparticle Catalyzed Piperidinolysis of PS− in Colloidal System
- Application
- Effect of Surface Modification on the Dispersion, Thermal Stability and Crystallization Properties of PET/CaCO3 Nanocomposites
- Environmental Chemistry
- Inhibition of Calcium Carbonate Scale Using an Environmental Friendly Scale Inhibitor
- Novel Surfactants
- Study on the Properties of Mixed Micelles of Disodium Salt of 3-({2-[(2-Carboxy-ethyl)-dodecanoyl-amino]-ethyl}-dodecanoyl-amino)-propionic Acid in Solution Systems
- Synthesis
- Macrocyclic Schiff Base Metal Complexes Derived from Isatin: Structural Activity Relationship and DFT Calculations
- Quaternary Ammonium Gemini Surfactants Used in Enhanced Oil Recovery: Synthesis, Properties, and Flooding Experiments
Articles in the same Issue
- Contents/Inhalt
- Contents
- Detergent/Enzymes
- Lactobacillus brevis Lipase: Purification, Immobilization onto Magnetic Florosil NPs, Characterization and Application as a Detergent Additive
- Study on the Interaction Between Cellulase and Surfactants
- Physical Chemistry
- Study of Ionic Liquid Microemulsions: Ethylammonium Nitrate/TritonX-100/Cyclohexane
- Synergistic Effect of Cationic Surfactants on the Rheological Behavior of Erucyl Amidosulfobetaine
- Microscopic Evidence for the Correlation of Micellar Structures and Counterion Binding Constant for Flexible Nanoparticle Catalyzed Piperidinolysis of PS− in Colloidal System
- Application
- Effect of Surface Modification on the Dispersion, Thermal Stability and Crystallization Properties of PET/CaCO3 Nanocomposites
- Environmental Chemistry
- Inhibition of Calcium Carbonate Scale Using an Environmental Friendly Scale Inhibitor
- Novel Surfactants
- Study on the Properties of Mixed Micelles of Disodium Salt of 3-({2-[(2-Carboxy-ethyl)-dodecanoyl-amino]-ethyl}-dodecanoyl-amino)-propionic Acid in Solution Systems
- Synthesis
- Macrocyclic Schiff Base Metal Complexes Derived from Isatin: Structural Activity Relationship and DFT Calculations
- Quaternary Ammonium Gemini Surfactants Used in Enhanced Oil Recovery: Synthesis, Properties, and Flooding Experiments
