Effect of vibration duration of high ultrasound applied to bio-composite while gelatinized on its properties

被引：42

作者：

Abral, Hairul ^{[1
]}

Putra, Genda J. ^{[1
]}

Asrofi, Mohammad ^{[1
]}

Park, Ji-Won ^{[2
]}

Kim, Hyun-Joong ^{[2
]}

机构：

[1] Andalas Univ, Dept Mech Engn, Padang 25163, Sumatera Barg, Indonesia

[2] Seoul Natl Univ, Lab Adhes & Biocomposites, Program Environm Mat Sci, Res Inst Agr & Life Sci, Seoul 151921, South Korea

来源：

ULTRASONICS SONOCHEMISTRY | 2018年 / 40卷

关键词：

OPEFB fibers; Tapioca starch bio-composite; Mechanical properties; Moisture absorption; Vibration duration; MECHANICAL-PROPERTIES; STARCH; FIBERS; MORPHOLOGY;

D O I：

10.1016/j.ultsonch.2017.08.019

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This article reports effect of vibration duration of high ultrasound applied to bio-composite while gelatinized on its properties. The bio-composite consists of mixing of both the tapioca starch based bioplastic and oil palm empty fruit bunch (OPEFB) fibers with high volume fraction. Gelatinization of the bio-composite sample was poured into a rectangular glass mold placed then in an ultrasonic bath with 40 kHz, and 250 watt in different duration for 0, 15, 30, 60 min respectively. The results show that vibration during gelatinization has changed the characterisation of the bio-composite. SEM photograph displayed different fracture surface of tensile sample. For vibration duration of 60 min, tensile strength (TM), and tensile modulus (TM) was improved to 64.4, 277.4%, respectively, meanwhile strain was decreased to 35.1% in comparison without vibration. Fourier Transform Infrared Spectroscopy (FTIR), and XRD diffraction of the bio-composite has changed due to various vibration duration. Moisture absorption of the vibrated bio-composite was lower than that of the untreated one.

引用

页码：697 / 702

页数：6

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