The effect of drying method on the properties and nanoscale structure of cellulose whiskers

Rämänen, Pirita; Penttilä, Paavo A.; Svedström, Kirsi; Maunu, Sirkka Liisa; Serimaa, Ritva

doi:10.1007/s10570-012-9695-3

Cited by 41 publications

(17 citation statements)

References 24 publications

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“…As previously reported272829, cellulose nanocrystals could be distinguished on the film surface with no particular orientation; however, the long axis of the nanocrystals appeared to be parallel to the film surface. AFM observation of the hemicellulose films revealed long filaments on the surface of the GM films.…”

Section: Resultssupporting

confidence: 77%

Bioinspired lignocellulosic films to understand the mechanical properties of lignified plant cell walls at nanoscale

Muraille

Aguié‐Béghin

Chabbert

et al. 2017

Sci Rep

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The physicochemical properties of plant fibres are determined by the fibre morphology and structural features of the cell wall, which is composed of three main layers that differ in chemical composition and architecture. This composition and hierarchical structure are responsible for many of the mechanical properties that are desirable for industrial applications. As interactions between the lignocellulosic polymers at the molecular level are the main factor governing the final cohesion and mechanical properties of plant fibres, atomic force microscopy (AFM) is well suited for the observation and measurement of their physical properties at nanoscale levels. Given the complexity of plant cell walls, we have developed a strategy based on lignocellulosic assemblies with increasing complexity to understand the influence of the different polymers on the nanomechanical properties. Measurements of the indentation moduli performed on one type of lignified cell wall compared with those performed on the corresponding lignocellulosic films clearly show the importance of the lignin in the mechanical properties of cell walls. Through this strategy, we envision a wide application of bioinspired systems in future studies of the physical properties of fibres.

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Section: Resultssupporting

confidence: 77%

Bioinspired lignocellulosic films to understand the mechanical properties of lignified plant cell walls at nanoscale

Muraille

Aguié‐Béghin

Chabbert

et al. 2017

Sci Rep

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“…It is known that the packing of cellulose microfibrils could be affected by rehydration in water (Rämänen et al 2012) (Zimmerley et al 2010). The comparison Cellulose of SFG spectra of AWD (Fig.…”

Section: Discussionmentioning

confidence: 99%

Comprehensive analysis of cellulose content, crystallinity, and lateral packing in Gossypium hirsutum and Gossypium barbadense cotton fibers using sum frequency generation, infrared and Raman spectroscopy, and X-ray diffraction

et al. 2015

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The mesoscale packing and crystal structure of cellulose microfibrils as well as temporal changes in cell wall composition and hydration during the development of cotton fibers from two species, Gossypium hirsutum and G. barbadense were studied using vibrational sum frequency generation (SFG), attenuated total refection infrared (ATR-IR), Fourier transform Raman (FT-Raman) spectroscopy and X-ray diffraction (XRD). The developmental stages analyzed (13-60 days post anthesis) included primary wall synthesis, transitional cell wall remodeling, secondary wall thickening via synthesis of nearly pure cellulose, and fiber maturation. ATR-IR and FT-Raman combined with principle component analysis revealed that fibers of both species undergo abrupt changes in the cellulose and matrix polymer contents during the transition to secondary cell wall synthesis. XRD revealed that cellulose crystal size and crystallinity increase similarly over time in both species. SFG analysis of fibers from un-opened bolls, which were stored in water then air dried, showed subtle differences between two species in the mesoscale ordering of cellulose microfibrils in the maturing secondary walls. In the samples of mature fibers dried on the plant after the boll split opened naturally, the difference in SFG spectra between species was negligible. Collectively, the results show that (a) SFG can uniquely reveal differences in cellulose fibril ordering in maturing cotton fibers before boll opening; and (b) illustrate the comparative usefulness of other commonly used spectroscopic analytical methods for cotton fiber analysis.

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“…These drying processes are well described in the literature (Maloney et al 1998;Ping et al 2001;Park et al 2007;Eyholzer et al 2010;Quiévy et al 2010;Peng et al 2012;Rämänen et al 2012;Voronova et al 2012). Peng et al (2012) reported about the high potential of spray drying for production of powdered particles of cellulose nanocrystal (CNC) and NFC.…”

Section: Morphologymentioning

confidence: 91%

“…There is a large body of literature concerning freeze drying of cellulose particles in near nanodimensions (Helbert et al 1997;Jin et al 2004;Viet et al 2007;AgodaTandjawa et al 2010;Lu and Hsieh 2010;Quiévy et al 2010;Rämänen et al 2012;Voronova et al 2012). On the contrary, there are a limited number of reports on spray drying in the context of NFC (Quiévy et al 2010;Vartiainen et al 2011;Kolakovic et al 2012;Peng et al 2012), and only a few studies are dealing with the redispersibility of dried MFC or NFC (Beck et al 2012;Missoum et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Morphological, thermal, and structural aspects of dried and redispersed nanofibrillated cellulose (NFC)

et al. 2014

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The effects of various drying techniques, such as air, oven, freeze, and spray drying, on the morphological, thermal, and structural behaviors of two different nanofibrillated cellulose (NFC) materials were investigated. Field emission scanning electron microscopy (FE-SEM) observations indicated an interlaced network formation of predominantly in-plane fibrillar orientation for air-and oven-dried samples, while freeze and spray drying resulted in the formation of coarse and fine powder fractions. Comparison of redispersed powders obtained by freeze and spray drying indicated that aggregation phenomena are significantly reduced in freeze-dried specimens. Rheological and sedimentation analysis revealed that the freeze-dried NFC powders are more stable than spray-dried NFC powders when redispersed in water. Aggressive dehydration processes, such as freezing or heating, significantly influence the thermal stability of the dried cellulose samples. On the contrary, the crystallinity properties of dried NFC materials are very similar regardless of the drying treatment.

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The effect of drying method on the properties and nanoscale structure of cellulose whiskers

Cited by 41 publications

References 24 publications

Bioinspired lignocellulosic films to understand the mechanical properties of lignified plant cell walls at nanoscale

Bioinspired lignocellulosic films to understand the mechanical properties of lignified plant cell walls at nanoscale

Comprehensive analysis of cellulose content, crystallinity, and lateral packing in Gossypium hirsutum and Gossypium barbadense cotton fibers using sum frequency generation, infrared and Raman spectroscopy, and X-ray diffraction

Morphological, thermal, and structural aspects of dried and redispersed nanofibrillated cellulose (NFC)

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