کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
594969 | 1453995 | 2011 | 6 صفحه PDF | دانلود رایگان |

The study was based on the yield of ligninphenol and the resins, morphology, temperature stability, water and ultraviolet resistance of the formulated resins, to describe a route to improve the potential for partially replacing phenol with rice hull acid-insoluble lignin in phenol–formaldehyde (PF) resin. In this route, phenolation and three-step polymerization were combined to increase the reactivity of rice hull acid-insoluble lignin. The formulated resin exhibited a better morphology and temperature stability compared with rice hull acid-insoluble lignin/PF (RPF) resin, and a better water and ultraviolet resistance compared with ligninphenol/PF resin prepared by phenolation and one-step polymerization (LPF1). The good properties of the product were attributed to the increased covalent interaction between PF resin and lignin. The strategy showed low-cost, simple operation, no pollution and high value.
It was found that phenolation of rice hull acid-insoluble lignin was combined with three-step polymerization of the resin to improve the reactivity of rice hull acid-insoluble lignin. Compared with rice hull acid-insoluble lignin/PF (RPF) resin, the formulated resin exhibited a better morphology and temperature stability. Compared with ligninphenol/PF resin prepared by phenolation and one-step polymerization (LPF1), the formulated resin showed better water and ultraviolet resistance.Figure optionsDownload as PowerPoint slideResearch highlights
► Phenolation and three-step polymerization were combined to increase the reactivity of rice hull acid-insoluble lignin.
► The yield of ligninphenol and the resins, morphology, temperature stability, water and ultraviolet resistance of the resins.
► Compared with rice hull acid-insoluble lignin/PF (RPF) resin, the formulated resin exhibited a better morphology and temperature stability.
► Compared with ligninphenol/PF resin prepared by phenolation and one-step polymerization (LPF1), the formulated resin showed better water and ultraviolet resistance.
► This research provides a new way to convert lignin into the value-added products.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 377, Issues 1–3, 5 March 2011, Pages 284–289