2019
DOI: 10.32604/jrm.2019.00034
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Abstract: In this study, nanocrystalline celluloses were used to enhance physical, mechanical and water vapor barrier properties of chitosan films for potential food packaging applications. Two different mineral acids (sulfuric and phosphoric) were used to extract nanocrystalline cellulose from date palm sheath fibers. The influence of cellulose I and cellulose II on the properties of the isolated nanocrystalline celluloses (e.g., yield, energy and length of intra-and intermolecular hydrogen bonds, and degree of substit… Show more

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Cited by 28 publications
(11 citation statements)
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References 50 publications
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“…Furthermore, as shown in the FT‐IR spectra, the OH stretching vibration band at 3405 cm −1 of L‐PR xerogel was shifted to 3343 cm −1 after water treatment (Figure S16, Supporting Information), suggesting the formation of stronger hydrogen bonds between hydroxyl groups in polymer network. [ 42,43 ] These results jointly revealed that the water‐induced self‐assembly of α ‐CDs, driven by hydrogen bonds, resulted in the aggregation of PR with pronounced morphology change. In the case of H‐PR , slight aggregation was found in its DMSO gel, which was remarkably enhanced after soaking in water.…”
Section: Resultsmentioning
confidence: 82%
“…Furthermore, as shown in the FT‐IR spectra, the OH stretching vibration band at 3405 cm −1 of L‐PR xerogel was shifted to 3343 cm −1 after water treatment (Figure S16, Supporting Information), suggesting the formation of stronger hydrogen bonds between hydroxyl groups in polymer network. [ 42,43 ] These results jointly revealed that the water‐induced self‐assembly of α ‐CDs, driven by hydrogen bonds, resulted in the aggregation of PR with pronounced morphology change. In the case of H‐PR , slight aggregation was found in its DMSO gel, which was remarkably enhanced after soaking in water.…”
Section: Resultsmentioning
confidence: 82%
“…33 The Fourier transform infrared (FTIR) spectra of lignocellulosic materials were determined by the spectra of the functional group profiles. 34 The FTIR spectra of native CS and pretreated CS are illustrated in Figure 5. The absorbance of the functional group in solid residues was assigned the peak from 3432 to 465 cm −1 .…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…The XRD data reveals that CRM amorphicity is higher, when the [Amim][Cl] reuse grade increases. 48 This tendency may be a consequence of both dissolution and the regeneration efficiency step, involving the regeneration of more amorphous CRM when the dissolving efficacy decreases (increase of the reuse grade).…”
Section: ■ Results and Discussionmentioning
confidence: 99%