Effect of the degree of crosslinking on the interfacial layer structure of poly(vinyl chloride) dispersed with crosslinked poly(n-butyl methacrylate) particles
Autor: | Ryota Tsutsumi, Syuji Fujii, Mariko Sasaki, Takuya Matsumoto, Kazuki Takakura, Yoshinobu Nakamura, Kazuko Fujiwara, Shigeki Hikasa, Masayo Noda, Miyazaki Kenichi |
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Rok vydání: | 2016 |
Předmět: |
chemistry.chemical_classification
Materials science technology industry and agriculture General Physics and Astronomy Emulsion polymerization macromolecular substances 030206 dentistry 02 engineering and technology Polymer Dynamic mechanical analysis 021001 nanoscience & nanotechnology Methacrylate Vinyl chloride Surfaces Coatings and Films 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Phase (matter) Ceramics and Composites Particle Polymer blend Composite material 0210 nano-technology |
Zdroj: | Composite Interfaces. 24:761-778 |
ISSN: | 1568-5543 0927-6440 |
DOI: | 10.1080/09276440.2016.1270644 |
Popis: | The interfacial layer structure of a model incompatible polymer blend system was analyzed using 1H pulse nuclear magnetic resonance (pulse NMR) spectroscopy. Non-crosslinked and crosslinked poly(n-butyl methacrylate) particles with a mean size of ca. 0.9 μm were prepared by seeded emulsion polymerization, and the degree of crosslinking was varied. The particles were powdered using a freeze-dry method and dispersed in poly(vinyl chloride) by melt blending. Dynamic mechanical analysis indicated that the non-crosslinked particles were completely compatible. In contrast, mutual diffusion of the polymer chains in the crosslinked particles was restricted within the particle/matrix interfacial layer. As a result, an incompatible phase structure in which the crosslinked particles were dispersed in the continuous phase was formed. Pulse NMR analysis indicated that the interfacial layer thickness was in the range of 17–98 nm. The thickness decreased with an increase in the degree of crosslinking in the part... |
Databáze: | OpenAIRE |
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