酸性熔盐水合物解聚木质素及其改性酚醛泡沫的性能研究

doi:10.3969/j.issn.0253-2417.2018.05.016

Abstract

Abstract: In this paper, lignin was effectively depolymerized by using inorganic ionic liquid (acidic molten salt hydrate) and applied in the research of modified phenolic foam. The results showed that lignin could be effectively degraded, the relative weight average molecular weight (M_w) decreased from 3 900 to 1 600, and the polymer dispersity index (PDI) expressed by M_w/M_n also decreased from 4.10 to 1.78 markly which will lead to improvement of the stability and reproducibility in the lignin modified products. In addition, the phenolic hydroxyl content was greatly increased after lignin depolymerization, which can enhance the reactivity of lignin and lay a foundation for improving the utilization of lignin. Moreover, phenolic foam modified by 30% depolymerized lignin exhibited a good property with a compressive strength of 235 kPa, the limited oxygen index 38.1% and the coefficient of thermal conductivity 0.028 W/(m·K). These showed that the product might be non-combustible and efficient insulation materials.

Key words: molten salt hydrate, lignin, depolymerization, phenolic resin, phenolic foam

CLC Number:

TQ35

YANG Xiaohui, SHANG Qianqian, JIA Puyou, ZHOU Yonghong. Properties of Phenolic Foam Modified by Lignin Depolymerized in Molten Salt Hydrate[J]. Chemistry and Industry of Forest Products, 2018, 38(5): 115-121.

References

[1] GUO Y J,HU L H,JIA P Y,et al. Enhancement of thermal stability and chemical reactivity of phenolic resin ameliorated by nanoSiO₂[J]. Korean Journal of Chemical Engineering,2018,35(1):298-302.
[2] LI B,WANG Y Y,MAHMOOD N,et al. Preparation of bio-based phenol formaldehyde foams using depolymerized hydrolysis lignin[J]. Industrial Crops and Products,2017,97:409-416.
[3] LACOSTE C,BASSO M C,PIZZI A,et al. Pine tannin-based rigid foams:Mechanical and thermal properties[J]. Industrial Crops and Products,2013,43:245-250.
[4] QIAO W,LI S J,GUO G W,et al. Synthesis and characterization of phenol-formaldehyde resin using enzymatic hydrolysis lignin[J]. Journal of Industrial and Engineering Chemistry,2015,21:1417-1422.
[5] WANG G H,CHEN H Z. Carbohydrate elimination of alkaline-extracted lignin liquor by steam explosion and its methylolation for substitution of phenolic adhesive[J]. Industrial Crops and Products,2014,53:93-101.
[6] ROUCHES E,HERPOËL-GIMBERT I,STEYER J P,et al. Improvement of anaerobic degradation by white-rot fungi pretreatment of lignocellulosic biomass:A review[J]. Renewable & Sustainable Energy Reviews,2016,59:179-198.
[7] SHAO Y,XIA Q E,DONG L,et al. Selective production of arenes via direct lignin upgrading over a niobium-based catalyst[J]. Nature Communications,2017,8:1-9[2017-07-24].https://www.nature.com/articles/ncomms16104.
[8] MA X L,MA R,HAO W Y,et al. Common pathways in ethanolysis of kraft lignin to platform chemicals over molybdenum-based catalysts[J]. ACS Catalysis,2015,5(8):4803-4813.
[9] HU L H,ZHOU Y H,LIU R J,et al. Synthesis of foaming resol resin modified with oxidatively degraded lignosulfonate[J]. Industrial Crops and Products,2013,44:364-366.
[10] DE GREGORIO G F,WEBER C C,GRÄSVIK J,et al. Mechanistic insights into lignin depolymerization in acidic ionic liquids[J]. Green Chemistry,2016,18:5456-5465.
[11] COX B J,EKERDT J G. Depolymerization of oak wood lignin under mild conditions using the acidic ionic liquid 1-H-3-methylimidazolium chloride as both solvent and catalyst[J]. Bioresource Technology,2012,118:584-588.
[12] LUTERBACHER J S,AZARPIRA A,MOTAGAMWALA A H,et al. Lignin monomer production integrated into the γ-valerolactone sugar platform[J]. Energy & Environmental Science,2015,8:2657-2663.
[13] LAHIVE C W,DEUSS P,LANCEFIELD C S,et al. Advanced model compounds for understanding acid-catalyzed lignin depolymerization:Identification of renewable aromatics and a lignin-derived solvent[J]. Journal of the American Chemical Society,2016,138:8900-8911.
[14] DEUSS P J,LANCEFIELD C S,NARANI A,et al. Phenolic acetals from lignins of varying compositions via iron (Ⅲ) triflate catalyzed depolymerisation[J]. Green Chemistry,2017,19:2774-2782.
[15] RAHIMI A,ULBRICH A,COON J J,et al. Formic-acid-induced depolymerization of oxidized lignin to aromatics[J]. Nature,2014,515:249-252.
[16] YANG X H,LI N,LIN X L,et al. Selective cleavage of the aryl ether bonds in lignin for depolymerization by acidic lithium bromide molten salt hydrate under mild conditions[J]. Journal of Agricultural and Food Chemistry,2016,64(44):8379-8387.
[17] WANG G H,CHEN H Z. Fractionation of alkali-extracted lignin from steam-exploded stalk by gradient acid precipitation[J]. Separation and Purification Technology,2013,105:98-105.
[18] NADA A M A,EL-SAIED H,FADL M H,et al. Infrared spectroscopic characteristics of bagasse cresol lignin[J]. Polymer Degradation and Stability,1994,43(1):55-59.

Properties of Phenolic Foam Modified by Lignin Depolymerized in Molten Salt Hydrate

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	ZHANG Qingtong, YUN Xiaojing, YAN Depeng, LI Mingfu, WANG Shuangfei, MIN Douyong. Preparation of Sliver Nanoparticles by Lignin Under Solar Light Irradiation [J]. Chemistry and Industry of Forest Products, 2019, 39(4): 35-41.
[2]	SUN Yongchang, ZHANG Bingqing, LIU Liming, LIU Xiaonan, SHI Zhengjun. Preparation of Lignin-based Carbon Material and Adsorption Mechanism of Cr(VI) from Wastewater [J]. Chemistry and Industry of Forest Products, 2019, 39(4): 120-128.
[3]	CHEN Chao, WANG Ao, SUN Kang, LU Xincheng, XU Wei, JIANG Jianchun. Graphitization of Biomass Catalyzed by Ni [J]. Chemistry and Industry of Forest Products, 2019, 39(3): 94-100.
[4]	ZHAO Cunyi, YING Wenjun, SHI Zhengjun, YANG Haiyan, ZHENG Zhifeng, YANG Jing. Preparation of Hydroxypropylated Alkali Lignin and Its Effect on Hydrolysis Efficiency of Cellulase [J]. Chemistry and Industry of Forest Products, 2019, 39(2): 109-114.
[5]	XU Lina, YANG Xiaohua, DING Haiyang, LI Mei, XIA Jianling. Synthesis and Properties of Oxidative Modified Satium Lignosulfonate/Graphene Quantum Dots Composites [J]. Chemistry and Industry of Forest Products, 2019, 39(1): 29-34.
[6]	ZHANG Na, HU Lihong, GUO Yajun, ZHOU Yonghong. Characterization of Phenolic Foam Modified by Silanized Nano-SiO₂ [J]. Chemistry and Industry of Forest Products, 2019, 39(1): 53-60.
[7]	LI Jihui, SUN Kang, SONG Yaoguang, WANG Ao, JIANG Jianchun. Preparation of Lignin-based Carbon Nanosheet and Its Electrochemical Property [J]. Chemistry and Industry of Forest Products, 2019, 39(1): 67-74.
[8]	WANG Guangbin, CHEN Jiabao, GU Limin, WANG Chunpeng, XU Yuzhi. Synthesis and Characterization of Lignin Based Chain Transfer Agent Used for RAFT Polymerization [J]. Chemistry and Industry of Forest Products, 2018, 38(6): 75-80.
[9]	ZHOU Fanglang, ZHENG Zhifeng, YANG Jing, YANG Haiyan, DENG Jia, SHI Zhengjun. Preparation and Characterization of Lignin Based Phenolic Foam [J]. Chemistry and Industry of Forest Products, 2018, 38(6): 103-109.
[10]	JIA Zhuan, WAN Guangcong, LI Mingfu, LUO Bin, WANG Shuangfei, MIN Douyong. Fractionation and Characterization of Sugarcane Bagasse Kraft Lignin [J]. Chemistry and Industry of Forest Products, 2018, 38(5): 107-114.
[11]	FENG Nianjie, WANG Jiming, XIE Yimin, YANG Xin, LIU Da'an. Regulating Effect of P-factor on Lignin Mass Concentration in Prehydrolysis Liquor of Triploid Poplar [J]. Chemistry and Industry of Forest Products, 2018, 38(4): 35-40.
[12]	YE Jiewang, JIANG Jianchun, JIN Zhenfu, ZHANG Weigang, ZHANG Xiaochun. Depolymerization of Lignin Catalyzed by Complex Metal Oxide in Supercritical Methanol [J]. Chemistry and Industry of Forest Products, 2018, 38(4): 52-60.
[13]	YANG Sheng, WANG Jun, LI Gaiyun, FAN Dongbin. Molecular Structure and Curing Characteristics of Lignin-phenol-formaldehyde Resin Prepared with the Use of Magnesian Ion as Catalyst [J]. Chemistry and Industry of Forest Products, 2018, 38(4): 74-78.
[14]	YE Jiewang, JIANG Jianchun, MA Zhongqing, ZHANG Weigang, LU Fengzhu. Directional Liquefaction of Bamboo Catalyzed by Cu Doped Porous Metal Oxide [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 48-54.
[15]	ZHANG Wen, XU Sheng, LÜ Zongze, LI Zhiguo. Synthesis of Nitrogen and Oxygen-doped Ligin-based Electrode Materials and Its Electrochemical Performance [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 55-62.