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Preparation and properties ofin situ polymerized poly(ethylene terephthalate)/fumed silica nanocomposites
- Source :
- Macromolecular Research. 12:85-93
- Publication Year :
- 2004
- Publisher :
- Springer Science and Business Media LLC, 2004.
-
Abstract
- We have prepared poly(ethylene terephthalate) (PET) nanocomposites filled with two different types of fumed silicas, hydrophilic (FS) and hydrophobic (MFS) silicas of 7-nm diameter, byin situ polymerization. We then investigated the morphological changes, rheological properties, crystallization behavior, and mechanical properties of the PET nanocomposites. Transmission electron microscopy (TEM) images indicate that the dispersibility of the fumed silica was improved effectively byin situ polymerization; in particular, MFS had better dispersibility than FS on the non-polar PET polymer. The crystallization behavior of the nanocomposites revealed a peculiar tendency: all the fillers acted as retarding agents for the crystallization of the PET nanocomposites. The incorporation of fumed silicas increased the intrinsic viscosities (IV) of the PET matrix, and the strong particleparticle interactions of the filler led to an increased melt viscosity. Additionally, the mechanical properties, toughness, and modulus of the nanocomposites all increased, even at low filler content.
- Subjects :
- chemistry.chemical_classification
Materials science
Nanocomposite
Polymers and Plastics
General Chemical Engineering
Organic Chemistry
Nanochemistry
Polymer
law.invention
chemistry
Polymerization
law
Transmission electron microscopy
Materials Chemistry
In situ polymerization
Composite material
Crystallization
Fumed silica
Subjects
Details
- ISSN :
- 20927673 and 15985032
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Macromolecular Research
- Accession number :
- edsair.doi...........a5f92e397ba6c5831e7ea555322be3ce