Hydroxyalkylated xylans – Their synthesis and application in coatings for packaging and paper

Laine, Christiane; Harlin, Ali; Hartman, Jonas; Hyvärinen, Sari; Kammiovirta, Kari; Krogerus, Björn; Pajari, Heikki; Rautkoski, Hille; Setälä, Harri; Sievänen, Jenni; Uotila, Johanna; Vähä-Nissi, Mika

doi:10.1016/j.indcrop.2012.08.033

Cited by 94 publications

(81 citation statements)

References 44 publications

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“…The 1 H NMR spectrum of HPX (Fig. 2) showed a very intense signal at 1.13 ppm clearly attributed to the methyl protons of the substituent hydroxypropyl groups [21]. From the comparison of the integrated area of this signal and that of anomeric H-1, a DS of 1.07 was determined for HPX (Section 2.3.2).…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 98%

“…Hydroxypropyl xylan (HPX) synthesis was carried out according to the method used by Laine et al [21]. Briefly, 13 g of 50% aqueous sodium hydroxide was added to 3.25 g of BX dispersed in distilled water (16.3%, w/w) was added and the mixture vigorously stirred in a Scheme 1.…”

Section: Hydroxypropylationmentioning

confidence: 99%

“…4.53 ppm, of substituted AXU units at C-2 and C-3 positions, I H-1(u) is the integrated area of fitted H-1 signal at 4.49 ppm, of unsubstituted AXU units, and I H-1* is the integrated area of fitted H-1 signal at 4.63 ppm, of AXU units containing MeGlcA groups at C-2 position. For HPX [21]: DS = (I methylprotons /3)/I H-1 , where I methylprotons is the integrated area of the signal due to three methyl protons in the hydroxypropyl group (peak at 1.13 ppm) and I H-1 is the integrated area of the H-1 signal.…”

Section: Ftir-atr and 1 H Nmr Analysesmentioning

confidence: 99%

“…Gamelas) per additives and flocculation aids [19,20], antimicrobial agents [20] and coating color components [21]. In particular, they play an important role in pulping and papermaking processes as they increase the yield of the pulping process and improve the paper mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, they play an important role in pulping and papermaking processes as they increase the yield of the pulping process and improve the paper mechanical properties. However, the recent increasing demand for α-cellulose (dissolving pulp) and the production of nanocellulose open new possibilities for hemicelluloses production [21]. Moreover, the increasing demand for advanced renewable materials and green technologies has led researchers to focus their work in the plant biomass and value-added chemicals obtained from that.…”

Section: Introductionmentioning

confidence: 99%

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Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

Sousa

Pedrosa

Ramos

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Xylan (the most common hemicellulose in wood and annual plants) and xylan derivatives have a very wide field of uses for which physico-chemical surface properties play an important role (e.g. in composites or barrier materials). In the present work, for the first time, inverse gas chromatography (at infinite dilution conditions) was used to assess the surface properties of xylan and xylan derivatives. Firstly, carboxymethyl xylan (CMX) and hydroxypropyl xylan (HPX) have been synthesized from commercial xylan (BX) and the presence of substituent groups confirmed by infrared spectroscopy and 1 H NMR. Then, the modified and original xylans were analysed for their dispersive component of the surface energy (γ s d ) and Lewis acid-base properties. It was found that carboxymethylation and hydroxypropylation decreased significantly the γ s d value of xylan: from 47.6 mJ m −2 in BX to 33.0 mJ m −2 and 23.5 mJ m −2 in CMX and HPX, respectively. As for the Lewis acid-base properties, HPX showed a perfectly amphoteric behaviour while the surfaces of unmodified xylan and CMX showed a prevalence of Lewis acidic character over the Lewis basic character, being, however, the surface of CMX less acidic than that of the original xylan. These results were interpreted in terms of the effect of the presence of the new substituent groups in the xylan backbone.

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Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 98%

Section: Hydroxypropylationmentioning

confidence: 99%

Section: Ftir-atr and 1 H Nmr Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

Sousa

Pedrosa

Ramos

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Biopolymers and Their Composites for Biotechnological Applications

Hoque,

Shafoyat

2024

Applications of Biopolymers in Science, Biotechnology, and Engineering

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Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Martínez‐Abad

Ruthes

Vilaplana

2015

J of Applied Polymer Sci

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On the use of tris(nonylphenyl) phosphite as a chain extender in melt-blended poly(hydroxybutyrate-co-hydroxyvalerate)/ clay nanocomposites: Morphology, thermal stability, and mechanical properties J. González-Ausejo, E. Sánchez-Safont, J. Gámez-Pérez and L. Cabedo, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Characterization of polyhydroxyalkanoate blends incorporating unpurified biosustainably produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) A. Martínez-Abad, L. Cabedo, C. S. S. Oliveira, L. Hilliou, M. Reis and J. M. Lagarón, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Modification of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) properties by reactive blending with a monoterpene derivative L. Pilon and C. Kelly, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) films for food packaging: Physical-chemical ABSTRACT: Plant polysaccharides comprise the main renewable resource available in the biosphere for biomaterial production. However, the recalcitrant and heterogeneous structure of lignocellulosic biomass hinders the effective fractionation and exploitation of the polysaccharide components for the design of carbohydrate-based materials. Carbohydrate-active enzymes constitute a selective and versatile biotechnological tool that can assist during the biomass pretreatment steps to extract and fractionate the polysaccharide macromolecular components. Moreover, this enzymatic toolbox can be as well exploited for the tailored modification of the molecular structure of relatively pure polysaccharide components to achieve customized macroscopic properties. This review critically discusses the potential and challenges of the use of plant lignocellulosic polysaccharides and enzymatic modifications to design and prepare suitable materials for packaging applications in terms of their structure-property relations. Structural factors such as the molar mass and crystallinity of the polysaccharide fractions and functional factors such as water sensitivity and processability of the derived films are critical for the material performance. The global net primary production of carbon in the biosphere is estimated around 10 11 tonnes per year, 1 from which polysaccharides account for approximately 75% of all biomass. In this context, plant biomass represents the main renewable resource for biofuel and materials production, as a future replacement of fossil-based energy and goods. New schemes for the sustainable exploitation of biomass have emerged in the last decades (the "biorefinery" concept), which integrate chemical, mechanical, thermal, and biotechnological conversion processes for the generation of energy, platform chemicals, and bio-based polymeric materials. Different generations of biorefineries have been implemented, depending on the biomass source (e.g., agriculturederived crops and food waste, lignocellulosic biomass, marine feedstock, designer crops) and on the diversity of products that are converted (e.g., bioethanol after fermentation, syngas after thermochemical conversion, fin...

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Hydroxyalkylated xylans – Their synthesis and application in coatings for packaging and paper

Cited by 94 publications

References 44 publications

Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

Biopolymers and Their Composites for Biotechnological Applications

Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

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