Influence of Surface Modification on the Microstructure and Thermo-Mechanical Properties of Bamboo Fibers

Xiao-ping, Zhang; Wang, Fang; Keer, Leon M.

doi:10.3390/ma8105327

Cited by 138 publications

(89 citation statements)

References 36 publications

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“…It is anticipated therefore that fiber surface modification is needed to decrease fiber polarity and improve interfacial compatibility . Indeed, alkaline treatment has been justified as the most popular and lowest cost candidate for surface modification . This method can eliminate those non‐cellulosic components, such as wax, hemicellulose, and other inorganic impurities, and then it results in an effective surface area increment available for superior adhesion with the matrix .…”

Section: Introductionmentioning

confidence: 99%

Changes in the morphological–mechanical properties and thermal stability of bamboo fibers during the processing of alkaline treatment

Wang

Zhou

et al. 2017

Polymer Composites

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The aim of this study is to perform an intensive investigation of the influence of alkali concentrations on the microstructure and thermomechanical properties of bamboo fibers. The fibers were alkalized with 1, 4, and 7 wt% NaOH solution at room temperature for 1 h, respectively, and then they were examined by using scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, X‐ray diffraction, and tensile tests. The changes in morphology and chemical composition demonstrate that hemicellulose and lignin are likely removed by the alkalization with high concentration of NaOH. Compared with untreated fibers, there is an improvement in the average tensile strength of the fibers with the use of alkali treatment at 4 wt% concentration, which can be attributed to the formation of an effective contact area available for superior bonding with the matrix after treatment, whereas higher concentration used in the treatment induces a decrease of tensile strength. The analysis indicates that the elimination of binding materials with alkali treatment by higher concentration leading to partial removal of cellulose may be responsible for such changes. It is further verified by thermogravimetric analysis and X‐ray diffraction that the increase of alkali concentration helps facilitate an improvement of thermal stability. The overall results suggest that an appropriate alkali treatment is a key technology for enhancing the properties of natural fibers. POLYM. COMPOS., 39:E1421–E1428, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Changes in the morphological–mechanical properties and thermal stability of bamboo fibers during the processing of alkaline treatment

Wang

Zhou

et al. 2017

Polymer Composites

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“…A similar effect was observed in another study and was described as a result of the increase in the length-to-diameter ratio during the performed modification. Therefore, according to the authors, the evaporation of moisture was facilitated [60] which contributed to the fall in enthalpy values.…”

Section: Dsc Investigationmentioning

confidence: 99%

“…Ionic liquids have been used as a reaction medium for modifying cellulose using urea, phthalic anhydride (PA), maleic anhydride (MA) and butyl glycidyl ether (BGE). Previous experiments have shown that the hydrogen bonding interactions decrease and that anhydride groups have a higher reaction activity with hydroxyl groups [20].…”

Section: Introductionmentioning

confidence: 99%

Universal approach of cellulose fibres chemical modification result analysis via commonly used techniques

2018

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This article considers the modification of cellulose fibres with the use of vinyltrimethoxysilane and maleic anhydride as substances to improve the wettability of the additive in the hydrophobic polymer matrix. The stress is put on the possible ways of modification impact investigation and its description. Effects of the treatment are analysed using Fourier transform infrared spectroscopy, which reveal the presence of new moieties on the cellulose surface, e.g. C=C bonds, C=O and Si-C groups, while dynamic light scattering investigation revealed an increase in the hydrodynamic radii of the molecules which was maximized in the case of modification with the use of maleic anhydride. Furthermore, thermal properties were defined with differential scanning calorimetry and thermogravimetric analysis. Some variations within the process of samples thermal degradation are observed-thermal stability of the specimen modified with maleic anhydride is the highest. The presented approach of combined fibre modification analysis techniques, being a scientific novelty, allows to confirm the treatment impact on cellulose properties at many levels. Graphical abstractKeywords Cellulose · Maleic anhydride · Vinyltrimethoxysilane

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“…The first stage involved moisture evaporation at around 150 o C, measured at 4wt% loading. This is followed by the decomposition of the hemicellulose at around 300 o C [28,29]. Hemicellulose can be categorized as the most reactive and easily degrade constituent compared to cellulose and lignin.…”

Section: Fig 1 Tga For [Cneim][br]mentioning

confidence: 99%

Synthesis and application of dual functionalized task specific ionic liquid for bamboo dissolution

et al. 2017

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Abstract.A new class of dual functionalized imidazolium based ionic liquid (IL) namely 3-(2-cyano-ethyl)-1-(2-ethoxy-ethyl)-3-imidazolium bromide [CNEIM][Br], was synthesized and characterized to study their potential in bamboo dissolution. The chemical structure for the IL was characterized using NMR ( 1 H and 13 C). Thermal properties, surface morphology and functional group of the native bamboo and IL treated bamboo were analyzed by Thermal Gravimetric Anaylysis (TGA), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) respectively. The new IL was able to dissolve up to 5wt% of bamboo biomass within 48 hours and 100 o C.

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Influence of Surface Modification on the Microstructure and Thermo-Mechanical Properties of Bamboo Fibers

Cited by 138 publications

References 36 publications

Changes in the morphological–mechanical properties and thermal stability of bamboo fibers during the processing of alkaline treatment

Changes in the morphological–mechanical properties and thermal stability of bamboo fibers during the processing of alkaline treatment

Universal approach of cellulose fibres chemical modification result analysis via commonly used techniques

Synthesis and application of dual functionalized task specific ionic liquid for bamboo dissolution

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