Functional Properties and Molecular Degradation of Schizostachyum Brachycladum Bamboo Cellulose Nanofibre in PLA-Chitosan Bionanocomposites

被引：25

作者：

Rizal, Samsul ^{[1
]}

Saharudin, N. I. ^{[2
]}

Olaiya, N. G. ^{[2
]}

Khalil, H. P. S. Abdul ^{[2
]}

Haafiz, M. K. Mohamad ^{[2
]}

Ikramullah, Ikramullah ^{[1
]}

Muksin, Umar ^{[3
]}

Olaiya, Funmilayo G. ^{[2
]}

Abdullah, C. K. ^{[2
]}

Yahya, Esam Bashir ^{[2
]}

机构：

[1] Univ Syiah Kuala, Dept Mech Engn, Banda Aceh 23111, Indonesia

[2] Univ Sains Malaysia, Sch Ind Technol, George Town 11800, Malaysia

[3] Univ Syiah Kuala, Dept Phys, Banda Aceh 23111, Indonesia

来源：

MOLECULES | 2021年 / 26卷 / 07期

关键词：

molecular degradation; miscibility; reinforcement; sustainable; biocomposite;

D O I：

10.3390/molecules26072008

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The degradation and mechanical properties of potential polymeric materials used for green manufacturing are significant determinants. In this study, cellulose nanofibre was prepared from Schizostachyum brachycladum bamboo and used as reinforcement in the PLA/chitosan matrix using melt extrusion and compression moulding method. The cellulose nanofibre(CNF) was isolated using supercritical carbon dioxide and high-pressure homogenisation. The isolated CNF was characterised with transmission electron microscopy (TEM), FT-IR, zeta potential and particle size analysis. The mechanical, physical, and degradation properties of the resulting biocomposite were studied with moisture content, density, thickness swelling, tensile, flexural, scanning electron microscopy, thermogravimetry, and biodegradability analysis. The TEM, FT-IR, and particle size results showed successful isolation of cellulose nanofibre using this method. The result showed that the physical, mechanical, and degradation properties of PLA/chitosan/CNF biocomposite were significantly enhanced with cellulose nanofibre. The density, thickness swelling, and moisture content increased with the addition of CNF. Also, tensile strength and modulus; flexural strength and modulus increased; while the elongation reduced. The carbon residue from the thermal degradation and the glass transition temperature of the PLA/chitosan/CNF biocomposite was observed to increase with the addition of CNF. The result showed that the biocomposite has potential for green and sustainable industrial application.

引用

页数：20