Effects of reactive compatibilization on the morphological, thermal, mechanical and rheological properties of intumescent flame retarded polypropylene
Article
Article Title | Effects of reactive compatibilization on the morphological, thermal, mechanical and rheological properties of intumescent flame retarded polypropylene |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Song, Pingan (Author), Shen, Yu (Author), Du, Baoxian (Author), Peng, Mao (Author), Shen, Lie (Author) and Fang, Zhengping (Author) |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 1 (2), pp. 452-459 |
Number of Pages | 7 |
Year | 2009 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/am8001204 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/am8001204 |
Abstract | Flame-retardant polypropylene (PP) samples were in situ compatibilized with maleic anhydride grafted PP. Compatibilization reaction was verified by an IR spectrum and gel content measurements. Electron microscopy images showed that compatibilization could considerably reduce the size of the flame-retardant domains, control the phase morphology, and improve the interfacial adhesion between PP and intumescent flame retardant (IFR) with different IFR loading levels. The limiting oxygen index (LOI) of flame-retardant PP increased to different extents after compatibilization, indicating an improvement in the flame retardancy. Compatibilization enhanced the thermal stability to some extent and remarkably delayed thermal oxidative degradation of flame-retardant PP. For PP containing 20 wt % flame retardant, the temperature at which the maximum weight loss rate occurred was enhanced by about 99 °C after compatibilization. The storage modulus and glass transition temperatures were elevated to different extents. Tensile strengths of samples reduced in the presence of flame retardant alone but in the additional presence of compatibilizer were restored to levels similar to those of pure PP. Elongation-at-break values, however, showed IFR concentration-dependent reductions that were less for compatibilized samples. Furthermore, the complex viscosity of a compatibilized PP melt turned slightly smaller, which is favorable to melt processing. |
Keywords | mechanical property, morphology, polypropylene, reactive compatibilization, rheological properties, thermal properties |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Zhejiang A & F University, China |
Zhejiang University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q50x2/effects-of-reactive-compatibilization-on-the-morphological-thermal-mechanical-and-rheological-properties-of-intumescent-flame-retarded-polypropylene
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