Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 51, Issue 7, Pages 985-996Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998316656766
Keywords
Co-grinding; biocomposite; poly(3-hydroxybutyrate-co-hydroxyvalerate); wheat straw; mechanical properties
Categories
Funding
- The European Commission through the Seventh Framework for Research & Technological Development [FP7-265669]
- National Council of Science and Technology (CONACyT) [232435]
- European Union Latin America Academic Links (EULALinks) [EULA1200264]
Ask authors/readers for more resources
The main objective of this work was to explore for the first time the potential of the co-grinding process using a high-energy vibrated ball mill to prepare poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/wheat straw fibers biocomposites. Grinding conditions of virgin PHBV pellets were examined by focusing on the evolution of particle size, morphology, crystallinity, and molecular weight. Temperature and grinding duration were demonstrated to be the key parameters affecting PHBV milling. In a second step, mechanical properties of biocomposites prepared by cryo-co-grinding were discussed in relation to the processing conditions and the resulting structure of materials. Comparing to virgin PHBV, the reinforcing effect of wheat straw fibers was very poor, regardless of the good dispersion of fibers within the polymer matrix induced by co-grinding. The increased brittleness and decreased toughness of biocomposites were attributed to (a) a poor interfacial compatibility between wheat straw fibers and PHBV and (b) the degradation of PHBV during processing, as revealed by the decrease in molecular weight.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available