Moisture Absorption and Opacity of Starch-Based Biocomposites Reinforced with Cellulose Fiber from Bengkoang

被引：32

作者：

Hafizulhaq, Fadli ^{[1
]}

Abral, Hairul ^{[1
]}

Kasim, Anwar ^{[2
]}

Arief, Syukri ^{[3
]}

Affi, Jon ^{[1
]}

机构：

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

[2] Andalas Univ, Dept Agr Technol, Padang 25163, Sumatera Barat, Indonesia

[3] Andalas Univ, Dept Chem, Padang 25163, Sumatera Barat, Indonesia

来源：

FIBERS | 2018年 / 6卷 / 03期

关键词：

biocomposite; starch; cellulose; ultrasonication; moisture absorption; opacity;

D O I：

10.3390/fib6030062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cellulose fiber was isolated from bengkoang (Pachyrhizus erosus) tuber peel. A suspension consisting of distilled water, starch, and glycerol was mixed with various cellulose loadings (0, 2, 6, and 10 g) then gelatinized using a hot plate with a magnetic stirrer. The biocomposite gel was sonicated using an ultrasonication probe (47.78 W/cm(2) for 4 min). Scanning electron microscopy (SEM) micrographs for the fracture surface of resulting biocomposite films displayed a rougher surface than starch film, indicating fiber dispersion in the matrix. The opacity and moisture resistance of biocomposite films increased with the addition of cellulose. The opacity was at a maximum value (243.05 AUnm) with 10 g fiber, which was 11.27% higher than the starch film without cellulose. Moisture absorption of this biocomposite was 16.79% lower than the starch film. Fourier transform infrared (FTIR) confirmed this more hydrophobic nature with lower transmittance at -OH stretching in the composite than the starch film. The addition of cellulose fiber into the matrix also increased the crystallinity index.

引用

页数：11

共 31 条

[1] Characterization of Tapioca Starch Biopolymer Composites Reinforced with Micro Scale Water Hyacinth Fibers [J].