Liquefaction of Wood in the Presence of Phenol Using Sodium Hydroxide as a Catalyst and Some of Its Characterizations

Maldas, D.; Shiraishi, Nobuo

doi:10.1080/03602559608000607

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…Resilience rate, tensile strength, apparent density, elongation and water absorption of PUF are determined according to ISO 8307-1990, ISO 1798-1997, ISO 845-1988, ISO 1798-1997and ISO 2896 2.2.6. Biodegradability of PUF based on liquefied wheat straw Prepared PUF was cut into small pieces of equal weight and placed in a carton with many holes.…”

Section: Measurement Of Mechanical Properties Of Pufmentioning

confidence: 99%

“…Researches on it were started from the liquefaction of wood mill. Since Appell et al (1971Appell et al ( , 1975 studied the liquefaction of wood mill, there had been many reports about it (Bestue et al, 1985;Maldas and Shiraishi, 1997;Vuori and Niemela, 1988;Yamada and Ono, 1999). However, most of the reaction conditions are rigor and consume lots of energy.…”

Section: Introductionmentioning

confidence: 95%

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A novel method of utilizing the biomass resource: Rapid liquefaction of wheat straw and preparation of biodegradable polyurethane foam (PUF)

Wang

Chen

2007

Journal of the Chinese Institute of Chemical Engineers

111

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Section: Measurement Of Mechanical Properties Of Pufmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

A novel method of utilizing the biomass resource: Rapid liquefaction of wheat straw and preparation of biodegradable polyurethane foam (PUF)

Wang

Chen

2007

Journal of the Chinese Institute of Chemical Engineers

111

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“…Therefore, methods to increase the economic efficiency of paper recycling are needed. The liquefaction technique, which was developed for the utilization of waste biomass,5–9 may be useful for the development of new techniques for the use of WP. In this study, we attempted to liquefy some kinds of WP in the presence of phenol, and the obtained liquefied products were applied to Novolak‐type phenolic resins.…”

Section: Introductionmentioning

confidence: 99%

Acid‐catalyzed liquefaction of waste paper in the presence of phenol and its application to Novolak‐type phenolic resin

Lee¹,

Teramoto

Shiraishi

2001

J of Applied Polymer Sci

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Liquefaction of waste paper (WP) was performed in the presence of phenol with an acid catalyst. Newspaper (NP) was liquefied more easily than box paper (BP) or business paper (BNP). Differences in the degree of liquefaction were due to different chemical compositions. That is, NP had a relatively high lignin content, which is known to be easily liquefied, whereas BP and BNP were mainly composed of cellulose with a crystalline structure, which is difficult to liquefy. The acid concentration and phenol/WP ratio were more important factors in the regulation of liquefaction than reaction temperature. The changes in the apparent molecular weight depending on the reaction time were more significant for phenolated NP, with high lignin content, than for phenolated BP. The obtained phenolated products showed thermal flow properties and reactivity as good as those of phenolated wood and commercial Novolak resin. Thermosetting moldings were obtained from phenolated products, and their flexural properties and thermal stability were comparable to those of phenolated wood and commercial Novolak resin. Flexural properties were further improved by the cocondensation reaction between the unreacted phenol of phenolated products and formaldehyde.

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“…The utilization of biomass has recently attracted considerable attention because of its biodegradability, availability, and renewable nature. It has been found that liquefaction is one of the useful methods for utilizing biomass 1–10. The liquefaction of lignocellulosic biomass and the properties of the resulting liquefied materials have been intensively investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The liquefaction of lignocellulosic biomass and the properties of the resulting liquefied materials have been intensively investigated. Shiraishi and coworkers found that the lignocellulosic biomass, such as wood, can be liquefied in the presence of phenol or alcohols using acid catalysts at temperatures of 120–180°C or without catalysts at temperatures around 250°C1–10 and that the obtained liquefied products are successfully used to prepare novolak‐type phenolic resins,11–15 polyurethane foams,16–18 and adhesives 19…”

Section: Introductionmentioning

confidence: 99%

Liquefaction and product identification of corn bran (CB) in phenol

Lee

Yoshioka

Shiraishi

2000

J. Appl. Polym. Sci.

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The liquefaction of corn bran (CB) was successfully conducted by using three different liquefaction conditions. Among them, catalyzed liquefaction at high pressure and temperature (180–220°C) using phenol was the most effective for the liquefaction of CB. Both the phenol/CB ratio and the catalyst content affected the extent of the liquefaction. The decomposed components of CB did not show high reactivity toward phenol when liquefied without a catalyst. Thermal‐flow properties of the phenolated CB and flexural properties of the phenolated CB‐based moldings were influenced by the amount of combined phenol and were comparable to those of the commercial novolak or phenolated wood. The effect of molding time and filler content on the flexural properties is also presented. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 311–318, 2000

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Liquefaction of Wood in the Presence of Phenol Using Sodium Hydroxide as a Catalyst and Some of Its Characterizations

Cited by 11 publications

References 11 publications

A novel method of utilizing the biomass resource: Rapid liquefaction of wheat straw and preparation of biodegradable polyurethane foam (PUF)

A novel method of utilizing the biomass resource: Rapid liquefaction of wheat straw and preparation of biodegradable polyurethane foam (PUF)

Acid‐catalyzed liquefaction of waste paper in the presence of phenol and its application to Novolak‐type phenolic resin

Liquefaction and product identification of corn bran (CB) in phenol

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