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您的检索式：作者名="Helena Fuente"
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| 1 | Effects of floccuiants and sizing agents on bending strength of fiber cement omposites显示文摘 | Carlos Negro LuisM Saianchez Helena Fuente | 2005 | Cement and Concrete Research2005，35，： | 1 |
| 2 | Liquefaction of Kraft Lignin at Atmospheric Pressure显示文摘Kraft lignin was liquefied using polyethylene glycol#400(PEG)and glycerol(G)in a weight ratio of 80/20(w/w)and sulphuric acid(SA)as catalyst under atmospheric pressure at 160ºC.The three independent variables:reaction time(60,80 and 100 min),percentage of lignin(15,20 and 25%,w/w),and catalyst concentration(0,3 and 6%,w/w),were varied resulting in 27 experimental runs.The effect of these reaction conditions on the properties of the polyols was evaluated.The statistical analysis showed that only“the percentage of lignin”did not influence the properties of the liquefied products,however,reaction time and catalyst load were important parameters.The resulting liquefied products were characterized by FTIR analysis. | Silvia Helena Fuentes da Silva Patricia Soares Bilhalva dos Santos Darci Alberto Gatto Maria Angeles Andres Itziar Egüés | 2019 | Journal of Renewable Materials2019，7，6： | 0 |
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