MICROSTRUCTURE ANALYSIS OF MOSO BAMBOO (Phyllostachys pubescens MAZEL) SURFACE AFTER UV RADIATION

Haixia Yu, Xin Pan, Weiming Yang, Wenfu Zhang and Xiaowei Zhuang
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Haixia Yu: Zhejiang Forestry Academy, Zhejiang Provincial Key Laboratory of Biological and Chemical Utilization of Forest Resources, Hangzhou, Zhejiang 310023, P. R. China
Xin Pan: Zhejiang Forestry Academy, Zhejiang Provincial Key Laboratory of Biological and Chemical Utilization of Forest Resources, Hangzhou, Zhejiang 310023, P. R. China
Weiming Yang: #x2020;Zhejiang Forestry Product Testing Station, Hangzhou, Zhejiang 310023, P. R. China
Wenfu Zhang: Zhejiang Forestry Academy, Zhejiang Provincial Key Laboratory of Biological and Chemical Utilization of Forest Resources, Hangzhou, Zhejiang 310023, P. R. China
Xiaowei Zhuang: Zhejiang Forestry Academy, Zhejiang Provincial Key Laboratory of Biological and Chemical Utilization of Forest Resources, Hangzhou, Zhejiang 310023, P. R. China

Surface Review and Letters (SRL), 2020, vol. 27, issue 01, 1-6

Abstract: Bamboo material is widely used in outdoor applications. However, they are easily degraded when exposed to sunlight, their smooth surface will gradually turn to rough, and small cracks will appear and finally develop to large cracks. The paper presents a first-time investigation on the microstructure changes in the tangential section of Moso bamboo (Phyllostachys pubescens Mazel) radiated by artificial UV light. The results showed that the cracks mainly appeared at intercellular spaces of fibers where lignin content was high, the parenchyma cell walls and neighbor pits where the cell wall was very thin and more vulnerable than the other parts. In addition, the part of raised area and pit cavity tended to absorb more UV light radiation and showed more and larger cracks than the otherwhere. Cracks at the intercellular spaces of fibers were larger and bigger than those on the parenchyma cell walls. The cracks on the pits of the parenchyma cell walls normally appeared at one pit and then extended to the several surrounding pits. Bordered pits cavity showed more and larger cracks than the pits on the thin wall cells. The simple pits on the thick wall cells and the fiber cells were unaffected by UV radiation.

Keywords: Bamboo; UV radiation; SEM; tangential section; parenchyma; pits (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19500902

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