Combined infrared and electron diffraction study of the polymorphism of native celluloses

Sugiyama, Junji; Persson, Jan; Chanzy, H.

doi:10.1021/ma00009a050

Cited by 512 publications

(352 citation statements)

References 4 publications

Supporting

Mentioning

329

Contrasting

Unclassified

Order By: Relevance

“…The existence of two different crystalline forms in native cellulose, I α and I β , was first demonstrated by Attala and VanderHart [30] from nuclear magnetic resonance (NMR) experiments with cross polarization/magic angle spinning (CP-MAS). The existence of such forms was also confirmed by electron diffraction and Fourier transform infrared spectroscopy (FTIR) analyses performed on algal cellulose during the study of the polymorphism of native cellulose by Sugiyama et al [26]. Attala and VanderHart [30] proposed that most native celluloses are mixtures of cellulose I α and I β , solving a long time problem in the scientific community.…”

Section: Cellulosementioning

confidence: 84%

“…These represent the two main polymorphs of cellulose. The current knowledge on the crystallography and biosynthesis of cellulose strongly suggests that the structure of cellulose is made up of parallel chains [25,26], whereas the crystalline structure of cellulose II is described as antiparallel [26][27][28]. Cellulose I is not the most stable form of cellulose.…”

Section: Cellulosementioning

confidence: 99%

See 1 more Smart Citation

Cellulosic Bionanocomposites: A Review of Preparation, Properties and Applications

2010

View full text Add to dashboard Cite

Cellulose is the most abundant biomass material in nature. Extracted from natural fibers, its hierarchical and multi-level organization allows different kinds of nanoscaled cellulosic fillers-called cellulose nanocrystals or microfibrillated cellulose (MFC)-to be obtained. Recently, such cellulose nanoparticles have been the focus of an exponentially increasing number of works or reviews devoted to understanding such materials and their applications. Major studies over the last decades have shown that cellulose nanoparticles could be used as fillers to improve mechanical and barrier properties of biocomposites. Their use for industrial packaging is being investigated, with continuous studies to find innovative solutions for efficient and sustainable systems. Processing is more and more important and different systems are detailed in this paper depending on the polymer solubility, i.e., (i) hydrosoluble systems, (ii) non-hydrosoluble systems, and (iii) emulsion systems. This paper intends to give a clear overview of cellulose nanoparticles reinforced composites with more than 150 references by describing their preparation, characterization, properties and applications. OPEN ACCESSPolymers 2010, 2 729

show abstract

Section: Cellulosementioning

confidence: 84%

Section: Cellulosementioning

confidence: 99%

Cellulosic Bionanocomposites: A Review of Preparation, Properties and Applications

2010

View full text Add to dashboard Cite

show abstract

“…These two crystalline phases of native cellulose were differentiated based on different hydrogen bonding patterns of inter-and intra-molecular bonding within cellulose molecules 37 . Cellulose I α phase is metastable form and converts to more stable I β phase by heat treatment or annealing at 260-280°C 19,20 . As illustrated in Fig.…”

Section: Influence Of Oxidative Reaction On Chemical Composition Changesmentioning

confidence: 99%

“…Native cellulose fibrils orientation (cellulose I) is categorized into the I α and I β phases on the basis of the appearance of the OH stretching region of their infrared spectra 17,18 . It has been suggested that hydrogen bonding patterns within the crystalline domains partially caused the differences between these two phases of native cellulose I. Metastable crystalline cellulose I α form became allomorph cellulose I β after heat treatment at 260-280°C in alkali solution 19,20 . The present work aimed to investigate the influence of non-enzymatic oxidative reaction that mimics wood decay in nature on lignocellulose degradation or modification.…”

Section: Introductionmentioning

confidence: 99%

Rice straw and sugarcane bagasse degradation mimicking lignocellulose decay in nature: An alternative approach to biorefinery

Sakdaronnarong

Jonglertjunya²

2012

ScienceAsia

View full text Add to dashboard Cite

Rice straw (Oryza sativa) and sugarcane bagasse (Saccharum spp.) were subjected to catalytic oxidation. An oxidative cleavage of lignocellulose agro-residues was based on ferric ions and hydrogen peroxide driven by 2,5-dihydroxybenzoic acid (DHB) in weak acidic condition at room temperature. Alteration of inter-and intra-molecular bonding of cellulose and change in cellulose crystallinity which led to influence enzymatic susceptibility were investigated. By means of Fourier transform infrared spectroscopy, functional groups and chemical bonding modification in cellulosic, non-cellulosic, and lignin constituents of rice straw and sugarcane bagasse were characterized. Transformation of crystalline cellulose Iα and I β forms was observed after the oxidative reaction. The catalytic oxidative reaction by the Fe 3+ /DHB/H 2 O 2 system accelerated the modification of cellulose Iα to cellulose I β phase of sugarcane bagasse. However, the addition of DHB barely affected the oxidative degradation of rice straw. In addition, the crystallinity index of rice straw and sugarcane bagasse that decreased after oxidative reaction caused increases of hydrolytic enzyme accessibilities of treated samples.

show abstract

“…This result is consistent with the composition analysis and SEM observation. After pretreatment, the transmittance of bands, like 3,412 cm -1 (H-bonded O-H stretching) and 990 cm -1 (C-H deformation) have some increase because the content of these groups in substrate increased, reflecting the depolymerization of lignocellulose polymers and disruption of the crystalline structure [28][29].…”

Section: Resultsmentioning

confidence: 99%

NaOH Pretreatment of Wheat Straw at a Mesophilic Temperature: Effect on Hydrolysis and Loss of Organic Carbon

Jiang¹,

Zeng²,

Nie³

et al. 2016

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Combined infrared and electron diffraction study of the polymorphism of native celluloses

Cited by 512 publications

References 4 publications

Cellulosic Bionanocomposites: A Review of Preparation, Properties and Applications

Cellulosic Bionanocomposites: A Review of Preparation, Properties and Applications

Rice straw and sugarcane bagasse degradation mimicking lignocellulose decay in nature: An alternative approach to biorefinery

NaOH Pretreatment of Wheat Straw at a Mesophilic Temperature: Effect on Hydrolysis and Loss of Organic Carbon

Contact Info

Product

Resources

About