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Risø-PhD-11(EN) Properties of hemp
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Contents Preface 6 1 Resumé 7 2 Li
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PhD thesis: Properties of hemp fibr
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1 Resumé Karakterisering af hampef
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2.4 Oral presentations Anders Thyge
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4 Introduction Hemp (Cannabis sativ
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4.2 The outline of the thesis The f
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The only fertilizer used was 360/48
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Temperature [ o C] 35 30 25 20 15 1
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A B Figure 7. A: Model of transvers
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Figure 8. Lignin (a), pectin (b) an
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Figure 11. Microfibril angles (MFA)
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Teleman, 1997). The crystal structu
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to the computing effort and the sub
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Figure 15. The structure of hemicel
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fibre mats, which are made by air-d
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Figure 18. From fibre filament to a
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A B C D Figure 20. Chemical structu
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water vapour and air are removed fr
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7 Defibration methods Defibration m
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Table 5. Fibre yield and cellulose
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a b c Composition [% w/w] 100 Compo
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8 Fibre strength in hemp The streng
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8.2 Effect of pre-treatment of hemp
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E-modulus [GPa] 90 80 70 60 50 40 3
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Second mode: Failure is controlled
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structure, which made much higher f
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Table 7. Porosity factors determine
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Thereby, the effective fibre streng
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- Page 65 and 66: Fibre strength σ f [MPa] Fibre sti
- Page 67 and 68: 11 References Andersen TL, Lilholt
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- Page 71 and 72: Stowell EZ, Liu TS, 1961. On the Me
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- Page 77 and 78: Appendix D: Density and mechanical
- Page 79 and 80: Paper I Changes in chemical composi
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- Page 89 and 90: Paper II Hemp fiber microstructure
- Page 91 and 92: ABSTRACT Characterization of hemp f
- Page 93 and 94: METHODS AND TECHNIQUES Treatment of
- Page 95 and 96: 2000) and their orientation gave th
- Page 97 and 98: By TEM microscopy, the single fiber
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- Page 119 and 120: Paper IV Comparison of composites m
- Page 121 and 122: ABSTRACT Aligned epoxy-matrix compo
- Page 123 and 124: the calculation of volume fractions
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- Page 127 and 128: E ⎛ dσ c ⎞ = ⎜ ⎟ ⎝ dε
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- Page 137 and 138: DISCUSSION The defibration of hemp
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- Page 141 and 142: Bos, H.L., Molenveld, K., Teunissen
- Page 143 and 144: Thygesen, A., 2006. Properties of h
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- Page 147: Risø’s research is aimed at solv