Extraction and characterization of novel ultrastrong and tough natural cellulosic fiber bundles from manau rattan (Calamus manan)

Han, Xiaodong; Ding, Linhu; Tian, Zhiwei; Wu, Weijie; Jiang, Shaohua

doi:10.1016/j.indcrop.2021.114103

Cited by 46 publications

(20 citation statements)

References 47 publications

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“…The effects of HTP on the hemicellulose were located at the peaks of 1736 cm −1 and 1637 cm −1 , which greatly decreased with an increasing treatment temperature and nearly disappeared for C3 [ 34 ]. The peaks were assigned to the stretching vibration in acetyl groups and the OH bending vibration of hydration water in xylan-type polysaccharides [ 35 ]. This phenomenon strongly supported the results of xylan removal from the compositional analysis.…”

Section: Resultsmentioning

confidence: 99%

Supramolecular Deconstruction of Bamboo Holocellulose via Hydrothermal Treatment for Highly Efficient Enzymatic Conversion at Low Enzyme Dosage

Wang

et al. 2022

IJMS

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Hydrothermal pretreatment (HTP) has long been considered as an efficient and green treatment process on lignocellulosic biomass for bioconversion. However, the variations of cellulose supramolecular structures during HTP as well as their effects on subsequent enzymatic conversion are less understood. In this work, bamboo holocellulose with well-connected cellulose and hemicelluloses polysaccharides were hydrothermally treated under various temperatures. Chemical, morphological, and crystal structural determinations were performed systematically by a series of advanced characterizations. Xylan was degraded to xylooligosaccharides in the hydrolyzates accompanied by the reduced degree of polymerization for cellulose. Cellulose crystallites were found to swell anisotropically, despite the limited decrystallization by HTP. Hydrogen bond linkages between cellulose molecular chains were weakened due to above chemical and crystal variations, which therefore swelled, loosened, and separated the condensed cellulose microfibrils. Samples after HTP present notably increased surface area, favoring the adsorption and subsequent hydrolysis by cellulase enzymes. A satisfying enzymatic conversion yield (>85%) at rather low cellulase enzyme dosage (10 FPU/g glucan) was obtained, which would indicate new understandings on the green and efficient bioconversion process on lignocellulosic biomass.

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Section: Resultsmentioning

confidence: 99%

Supramolecular Deconstruction of Bamboo Holocellulose via Hydrothermal Treatment for Highly Efficient Enzymatic Conversion at Low Enzyme Dosage

Wang

et al. 2022

IJMS

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“…When developing such high-strength and tough structural materials, natural polymers should be preferred due to their renewable and sustainable characteristics [ 7 , 8 ]. Cellulose is the most abundant biopolymer on Earth, found in trees, bamboo, rattan, agricultural crops, and other biomass, even bacteria [ 9 , 10 , 11 , 12 , 13 , 14 ]. Cellulose possesses attractive intrinsic mechanical properties with tensile strength of about 3.0−4.7 GPa g −1 cm 3 and a theoretical modulus of about 63−125 GPa g −1 cm 3 in its crystal region [ 15 , 16 ], both of which are higher than most metals, alloys, and some ceramics, which makes it an ideal building block for a series of strong and tough materials, such as nanopaper, films, and superstrong wood [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Strengthening Mechanism of Ultrastrong and Tough Cellulosic Materials

Han

Wang

et al. 2022

Polymers

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Superior strong and tough structural materials are highly desirable in engineering applications. However, it remains a big challenge to combine these two mutually exclusive mechanical properties into one body. In the work, an ultrastrong and tough cellulosic material was fabricated by a two-step process of delignification and water molecule-induced hydrogen bonding under compression. The strong and tough cellulosic material showed enhanced tensile strength (352 MPa vs. 56 MPa for natural wood) and toughness (4.1 MJ m−3 vs. 0.42 MJ m−3 for natural wood). The mechanical behaviors of ultrastrong and tough bulk material in a tensile state were simulated by finite element analysis (FEA) using mechanical parameters measured in the experiment. FEA results showed that the tensile strength and toughness gradually simultaneously improved with the increase in moisture content, demonstrating that water molecules played an active role in fabricating strong and tough materials, by plasticizing and forming hydrogen bonding among cellulose nanofibrils.

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“…The unique properties which exist in natural fibers are their low density, low cost, availability, recyclability, non-toxicity, considerable strength, good thermal stability, bio-degradability etc. compared to their counterpart synthetic fibers [ 1 , 2 , 3 , 4 ]. Hence, it is very important to explore new natural sources of cellulosic fiber because of their huge demand in fibrous applications.…”

Section: Introductionmentioning

confidence: 99%

A low-density cellulose rich new natural fiber extracted from the bark of jack tree branches and its characterizations

Hossain

Jalil

Islam³

et al. 2022

Heliyon

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Extraction and characterization of novel ultrastrong and tough natural cellulosic fiber bundles from manau rattan (Calamus manan)

Cited by 46 publications

References 47 publications

Supramolecular Deconstruction of Bamboo Holocellulose via Hydrothermal Treatment for Highly Efficient Enzymatic Conversion at Low Enzyme Dosage

Supramolecular Deconstruction of Bamboo Holocellulose via Hydrothermal Treatment for Highly Efficient Enzymatic Conversion at Low Enzyme Dosage

Finite Element Analysis of Strengthening Mechanism of Ultrastrong and Tough Cellulosic Materials

A low-density cellulose rich new natural fiber extracted from the bark of jack tree branches and its characterizations

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