Issue 19, 2017

Super impact absorbing bio-alloys from inedible plants

Abstract

Injection molded bio-alloys based on polyamide 11 (PA11), 100% bio-based plastics from inedible plants, and polypropylene (PP) mixed with the maleic anhydride-modified ethylene-butene rubber copolymer (m-EBR) were prepared using a twin-screw extruder. The mechanical properties and morphologies of the bio-alloys were investigated using flexural tests, Charpy notched impact tests, field emission-scanning electron microscopy (FE-SEM), Raman spectroscopy, and transmission electron microscopy (TEM). The bio-alloy had a flexural modulus of 1090 ± 20 MPa and a Charpy notched impact strength of 98 ± 5 kJ m−2, which is superior to that of polycarbonates. The FE-SEM observations revealed that the bio-alloy has a unique “salami-like structure in a co-continuous phase”, and the TEM observations showed that some m-EBR formed 10 to 20 nm wide continuous interphases between the PP and PA11 matrices. Continuous rubber interphases played an important role in enhancing the impact strength. The bio-alloys exhibited good rigidity and excellent impact strength, making them feasible for applications in automobiles and other industries.

Graphical abstract: Super impact absorbing bio-alloys from inedible plants

Supplementary files

Article information

Article type
Communication
Submitted
20 Jun 2017
Accepted
11 Aug 2017
First published
11 Aug 2017
This article is Open Access
Creative Commons BY-NC license

Green Chem., 2017,19, 4503-4508

Super impact absorbing bio-alloys from inedible plants

J. Kawada, M. Kitou, M. Mouri, Y. Kato, Y. Katagiri, M. Matsushita, T. Ario, O. Kitou and A. Usuki, Green Chem., 2017, 19, 4503 DOI: 10.1039/C7GC01842H

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