The Use of Cashew Nut Shell Liquid (CNSL) in PP/HIPS Blends: Morphological, Thermal, Mechanical and Rheological Properties

The Use of Cashew Nut Shell Liquid (CNSL) in PP/HIPS Blends: Morphological, Thermal, Mechanical and Rheological Properties

Polypropylene (PP) and high impact polystyrene (HIPS) are two polymers that are frequently found in disposable waste. Both of these polymers are restricted from being separated in several ways. An easier way to reuse them in new applications, without the need for separation, would require them to be...

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Bibliographic Details
Published in:Materials Vol. 12; no. 12; p. 1904
Main Authors: Araújo, Mirna Nunes, Visconte, Leila Lea Yuan, Barreto, Daniel Weingart, Escócio, Viviane Alves, Silva, Ana Lucia Nazareth da, Sousa, Ana Maria Furtado de, Pacheco, Elen Beatriz Acordi Vasques
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 13-06-2019
MDPI
Subjects:
Consumption
Domains
Elongation
Impact resistance
Morphology
Nitrogen
Polyethylene terephthalate
Polymer blends
Polymers
Polystyrene resins
Radiation
Rheological properties
Rheology
Waste disposal
Brazil
Rio de Janeiro Brazil
compatibilization
polypropylene
cashew nut shell liquid (CNSL)
polymer mixtures
high impact polystyrene
blends
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Summary:Polypropylene (PP) and high impact polystyrene (HIPS) are two polymers that are frequently found in disposable waste. Both of these polymers are restricted from being separated in several ways. An easier way to reuse them in new applications, without the need for separation, would require them to be less immiscible. In this work, cashew nut shell liquid (CNSL), a sub-product of the cashew agroindustry, was added as a third component to PP-HIPS mixtures and its effect as a compatibilizing agent was investigated. Morphological results showed that CNSL acted as an emulsifier by promoting reduction in the domains of the dispersive phase, HIPS, thus stabilizing the blends morphology. Differential scanning calorimetry (DSC) analysis suggests that CNSL is preferably incorporated in the HIPS phase. Its plasticizing effect leads to more flexible materials, but no significant effect could be detected on impact resistance or elongation at break.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma12121904