Lignocellulosic Materials as Reinforcement of Polyhydroxybutyrate and its Copolymer with Hydroxyvalerate: A Review

The biodegradable nature of polyhydroxyalkanoates (PHAs) is an outstanding feature for the replacement of petroleum-based polymers. The most studied PHAs are polyhydroxybutyrate and its copolymer with hydroxyvalerate. However, PHAs have a considerably higher cost than conventional polymers, which is...

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Bibliographic Details
Published in:Journal of polymers and the environment 2021-05, Vol.29 (5), p.1350-1364
Main Authors: Robledo-Ortíz, Jorge R., González-López, Martín E., Martín del Campo, Alan S., Pérez-Fonseca, Aida A.
Format: Article
Language:English
Subjects:
Biodegradability
Biodegradation
Biomedical materials
Chemistry
Chemistry and Materials Science
Compatibilizers
Composite materials
Copolymers
Environmental Chemistry
Environmental Engineering/Biotechnology
Fiber-matrix adhesion
Fibers
Impact strength
Industrial Chemistry/Chemical Engineering
Lignocellulose
Literature reviews
Materials Science
Polyhydroxyalkanoates
Polyhydroxybutyrate
Polyhydroxybutyric acid
Polymer Sciences
Polymers
Review
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Summary:The biodegradable nature of polyhydroxyalkanoates (PHAs) is an outstanding feature for the replacement of petroleum-based polymers. The most studied PHAs are polyhydroxybutyrate and its copolymer with hydroxyvalerate. However, PHAs have a considerably higher cost than conventional polymers, which is one of the main obstacles to their growth in the polymers market. Also, its high brittleness, low impact strength, and high processing temperature must be improved. In this sense, incorporating natural fibers to PHAs does not compromise their eco-friendly nature; conversely, they could even enhance the biodegradation rate while bringing significant cost reduction and a reinforcement effect. Moreover, natural fibers are usually wasted from industrial processes without any added-value. This review summarizes the published literature and the state-of-the-art of PHAs-based biocomposites. An extensive discussion is presented about lignocellulosic fibers’ effect on the thermal, mechanical, and biodegradation properties, and fiber-matrix adhesion, as well as the use of compatibilizers, plasticizers, and processing methods.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-020-01979-2