Applications of Kenaf‐Lignocellulosic Fiber in Polymer Blends

Sarifuddin, Norshahida; Ismail, Hanafi

doi:10.1002/9781118773949.ch22

Cited by 2 publications

(1 citation statement)

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“…These groups have resulted from the reaction of the carboxylic acids with the OH groups of cellulose [28,29]. In addition, new small peaks were observed at 1604 and 790 cm −1 in BC-VS; they arose from the C=C stretching and show that the vinylsilane was coupled to the BC [30]. Moreover, a shoulder which appeared at 1410 cm −1 in the spectrum of BC-VS due to the grafting with VS, may be ascribed to the vinyl group (=CH2 scissors [31]).…”

Section: Ftir Analysismentioning

confidence: 98%

Surface Treatment of Bacterial Cellulose in Mild, Eco-Friendly Conditions

et al. 2018

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Bacterial cellulose (BC) with increased hydrophobicity is required for several applications including packaging. Surface functionalization of BC may provide good resistance to moisture, increased barrier properties or improved compatibility to polymer matrices. For this purpose, chemical grafting of BC in mild, eco-friendly conditions was carried out using different agents. BC membranes were surface functionalized with vinyl-triethoxy silane (VS) or 3-aminopropyl triethoxysilane (APS), by acylation and acrylation. The efficiency of the surface treatments was highlighted by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, by contact angle measurements and by dynamic mechanical analysis. The morphological investigation by atomic force microscopy and scanning electron microscopy revealed an increased compactness for surface functionalized BC, which correlated well with the different increase of the contact angle. BC treated with APS and VS showed more than a twofold increase in contact angle value. Similarly, the crystallinity degree was reduced to 69.6% and 72.9% after APS and VS treatments as compared with 84.1% for untreated BC, confirming the grafting reaction and the decrease in hydrogen bonding. All the applied treatments delayed the degradation of BC. However, the highest increase in thermal stability was observed for silanes treated membranes. Effective, eco-friendly methods for improving the surface hydrophobicity of bacterial cellulose for food packaging were proposed in this study.

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