International Bamboo and Rattan Organization

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MICROFIBRIL AGGREGATES IN PRETREATED BAMBOO FIBERS ANALYZED WITH ATOMIC FORCE MICROSCOPY

Articles

Journal/Conference:

WOOD AND FIBER SCIENCE

Language:

English

Year:

2016

Volume:

48

Issue:

2

Pages:

104-116

Keywords:

Bamboo fiber; microfibril aggregate; atomic force microscope

Fibers of primary cell walls of Ci bamboo (Neosinocalamus affinis) were analyzed with an atomic force microscope (AFM) to determine the arrangement of microfibril aggregates and the effect of pretreatments (ultrasonic treatment and different drying methods) on the arrangement and diameter of microfibril aggregates and the cell wall topography. The microfibril aggregates in primary cell walls of bamboo fiber showed a randomly interwoven structure. Differences in the spacing between microfibril aggregates observed from the AFM phase images and the diameters of microfibril aggregates determined from the AFM height topography of the nanostructure of primary cell walls of bamboo fiber were found relevant to the pretreatments during the sample preparation. The microfibril aggregates in primary cell walls of bamboo were actually the aggregations of different numbers of cellulose fibrils. Also, the ultrasonic treatment could have increased the roughness of bamboo fiber and exposure of microfibril aggregates. The data suggest that sample preparation and pretreatments should be considered relevant to the arrangement and diameter of microfibril aggregates as well as the topography in studying the nanostructure of cell walls with AFM.