当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Enhanced mechanical and hydrophobic properties of composite cassava starch films with stearic acid modified MCC (microcrystalline cellulose)/NCC (nanocellulose) as strength agent.

Enhanced mechanical and hydrophobic properties of composite cassava starch films with stearic acid modified MCC (microcrystalline cellulose)/NCC (nanocellulose) as strength agent.

Abstract：

:The green composite cassava starch films were prepared using stearic acid modified microcrystalline cellulose (M-MCC)/nanocellulose (M-NCC) as strength agent, which shows good mechanical and hydrophobic properties and is a candidate for food package in this work. Microcrystalline cellulose (MCC) was prepared with 98% phosphoric acid hydrolysis and mechanical stirring at 600 r/min and nanocellulose (NCC) was prepared with 65% sulfuric acid hydrolysis. After using stearic acid to modify MCC and NCC, the casting method was used to prepare the M-MCC/cassava starch composite films and M-NCC/cassava starch films. Physical, mechanical, hydrophobic and thermal properties were characterized using SEM, electronic universal testing machine, contact angle meter and TGA. The results showed that: M-MCC and M-NCC can lead to the enhancement of mechanical and hydrophobic properties of composite films; 0.5% M-MCC and 1.5% M-NCC had the highest enhancement effect on mechanical properties, leading the tensile strength of cassava starch film increased by 484.5% and 327.7% respectively; As to hydrophobic property, when 2% M-MCC and 0.5% M-NCC added, the hydrophobicity of the film increased by 65.0% and 30.3% respectively. Overall, the enhancement effect of M-MCC was better than M-NCC. But when M-MCC/M-NCC was added, the thermal stability of films reduced.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Chen Q,Shi Y,Chen G,Cai M

doi

10.1016/j.ijbiomac.2019.10.024

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

846-854

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(19)35406-6

journal_volume

142

pub_type

杂志文章

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