The effect of gelation sequence on the mechanical properties of plasticized polyurethane-poly(glycidyl methacrylate) simultaneous interpenetrating network

SummaryThe simultaneous interpenetrating network samples with different gelation sequences based on plasticized polyurethane(PU) and poly(glycidyl mechacrylate)(PGMA) were prepared by changing the PU catalyst. The kinetics of network formation was monitored by FTIR. The obtained samples with differe...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 1999-01, Vol.42 (1), p.93-99
Main Authors: Liu, Yiqun, Zhu, Zhengmao, Gao, Tongzhai, Tan, Huimin
Format: Article
Language:English
Subjects:
Applied sciences
Dynamic mechanical analysis
Exact sciences and technology
Gelation
Interpenetrating networks
Mechanical properties
Network formation
Organic polymers
Physical properties
Physicochemistry of polymers
Polymerization
Polyurethane resins
Preparation, kinetics, thermodynamics, mechanism and catalysts
Reaction kinetics
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Summary:SummaryThe simultaneous interpenetrating network samples with different gelation sequences based on plasticized polyurethane(PU) and poly(glycidyl mechacrylate)(PGMA) were prepared by changing the PU catalyst. The kinetics of network formation was monitored by FTIR. The obtained samples with different gelation sequences show opposite physical and mechanical properties. The sample with PU gelling first is transparent and brittle, while the sample with PGMA gelling first is opaque and highly elastic. The transmission electron microscopy(TEM) and dynamic mechanical analysis(DMA) methods were used to investigate the microstructures of these samples from different aspects to explain their completely different properties.
ISSN:0170-0839
1436-2449
DOI:10.1007/s002890050439