Effect of cellulose nanocrystals derived from Dunaliella tertiolecta marine green algae residue on crystallization behaviour of poly(lactic acid)

被引：45

作者：

Mondal, Kona ^{[1
]}

Sakurai, Shinichi ^{[1
,2
]}

Okahisa, Yoko ^{[2
]}

Goud, Vaibhav V. ^{[1
]}

Katiyar, Vimal ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati IITG, Dept Chem Engn, Gauhati 781039, Assam, India

[2] Kyoto Inst Technol KIT, Dept Biobased Mat Sci, Kyoto 6068585, Japan

来源：

CARBOHYDRATE POLYMERS | 2021年 / 261卷

关键词：

Algae biomass residue; Poly(lactic acid); Cellulose nanocrystals; Bio-composites; Crystallization;

D O I：

10.1016/j.carbpol.2021.117881

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Marine green algae biomass residue (ABR), a waste by-product of Dunaliella tertiolecta, left behind after the extraction of oil from the algal biomass, was utilized for the fabrication of cellulose nanocrystals (CNCs). The fabricated sulphuric acid hydrolysed CNCs had needle-like morphology, with dominant cellulose type I polymorph and a high crystallinity index of 89 %. ICP-MS elemental analysis confirmed the presence of a variety of minerals in the ABR. Washed ABR (WABR)/PLA and CNC/PLA bio-composite films were developed via solvent casting technique with varying bio-filler loadings for comparing their effectiveness on the crystallization behaviour of PLA. FESEM, FTIR, XRD and TGA were used to characterize the bio-fillers. The nucleating and crystallization behaviour of the bio-composite films were confirmed using DSC, SAXS and POM analysis which indicated better effectiveness of CNCs with a significant reduction in cold crystallization temperature, and noteworthy increment in crystallinity and spherulite growth rate.

引用

页数：9

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