乙二醇/碳酸乙烯酯预处理对椰壳纤维成分及结构的影响

doi:10.3969/j.issn.0253-2417.2017.01.016

Abstract

Abstract: The component separation of coconut fiber by different mole ratio of ethylene glycol (EG) and ethylene carbonate (EC) with coconut fiber as raw material was studied at a low temperature of 90℃ in present study. Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction(XRD), gel permeation chromatography(GPC) and thermogravimetry(TG) were used to analyze the isolated pretreated coconut fiber and regenerated lignin. The results showed the delignification rate was negative as the ethylene carbonate was individually applied; when the mole ratio of EG and EC was used by 4:1, the maximal delignification rate was realized, represented 49.87%. It meant that the EG/EC could achieve the delignification pretreatment at a lower temperature. It was found that the isolated cellulose content by EG and EG/EC was increased and meanwhile, the corresponding hemicellulose and lignin contents decreased. Besides, the cellulose crystalline structure was not destroyed, and the lignin was typical p-hydroxy-guaiacyl-syringyl(HGS) lignin.

Key words: pretreatment, coconut fibers, ethylene glycol, ethylene carbonate

CLC Number:

TQ35

ZHU Wanying, LI Lifen, HU Yingcheng. Effect of Ethylene Glycol/Ethylene Carbonate Pretreatment on Components and Structure of Coconut Fiber[J]. Chemistry and Industry of Forest Products, 2017, 37(1): 123-128.

References

[1] 许凤,钟新春,孙润仓.沙柳与柠条混合原料碱性过氧化氢法分离的纤维素特性研究[J].林产化学与工业,2006,26(2):19-22. XU F,ZHONG X C,SUN R C.Celluloses of Salix psammophila and Caragana korshinskii Kom.obtained by alkaline hydrogen peroxide process[J].Chemistry and Industry of Forest Products,2006,26(2):19-22.
[2] 罗渊,李云雁,甘济勇.从稻草中分离乙二醇木质素的研究[J].湖北农业科学,2009,48(1):168-171. LUO Y,LI Y Y,GAN J Y.Isolation of lignin from rice straw by glycol[J].Hubei Agricultural Sciences,2009,48(1):168-171.
[3] 姚嘉.椰纤维增韧复合材料的设计及其性能评价[D].哈尔滨:东北林业大学博士学位论文,2013. YAO J.Design and performance evaluation of coir toughened composite[D].Harbin:Doctoral Dissertation of Northeast Forestry University,2013.
[4] ESMERALDO M A,BARRETO A C H,FREITAS J E B,et al.Dwarf-green coconut fibers:A versatile natural renewable raw bioresource.Treatment,morphology,and physicochemical properties[J].Bioresources,2010,5(4):2478-2501.
[5] 张军伟.木质纤维素酸水解研究[D].无锡:江南大学硕士学位论文,2008. ZHANG J W.Study on acid-hydrolysis of lignocelluloses[D].Wuxi:Master Degree Thesis of Jiangnan University,2008.
[6] 李坚.木材波谱学[M].北京:科学出版社,2003. LI J.Wood Spectroscopy Science[M].Beijing:Science Press,2003.
[7] 马晓娟,黄六莲,陈礼辉,等.纤维素结晶度的测定方法[J].造纸科学与技术,2012(2):75-78. MA X J,HUANG L L,CHEN L H,et al.Determination methods for crystallinity of cellulose[J].Paper Science & Technology,2012(2):75-78.
[8] PINKERT A,GOEKE D F,MARSH K N,et al.Extracting wood lignin without dissolving or degrading cellulose:Investigations on the use of food additive-derived ionic liquids[J].Green Chemistry,2011,13(11):3124-3136.
[9] 金显春.离子液体提取稻草木质素可有效促进纤维素酶解[J].江苏农业科学,2011,39(2):422-424. JIN X C.Study on extraction of straw lignin by ionic liquids to remarkably enhanced cellulose enzymatic hydrolysis[J].Jiangsu Agricultural Sciences,2011,39(2):422-424.
[10] KIM J Y,HWANG H,OH S,et al.Investigation of structural modification and thermal characteristics of lignin after heat treatment[J].International Journal of Biologic Macromolecules,2014,66:57-65.
[11] 姚燕,王树荣,郑赟,等.基于热红联用分析的木质素热裂解动力学研究[J].燃烧科学与技术,2007,13(1):50-54. YAO Y,WANG S R,ZHENG Y,et al.Kinetic research of lignin pyrolysis by TGA-FTIR analysis[J].Journal of Combustion Science and Technology,2007,13(1):50-54.

[1]	QIAO Hui, OUYANG Shuiping, LIU Lei, OUYANG Jia. Pretreatment of Corncob by Dilute Acetic Acid [J]. Chemistry and Industry of Forest Products, 2019, 39(1): 81-87.
[2]	FENG Yanhong, WANG Duan, XIAO Heping, HE Hezhi, QU Jinping. Effect of Screw-extrusion Steam Explosion on the Structure of Rice Straw and the Performance of Binderless Board [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 69-74.
[3]	HUANG Jing, XIAO Zhuanquan, WANG Zongde, FAN Guorong. Synthesis and Antifungal Activity of Ethylene Glycol Mono Hydronopol Ether and Its Carboxylic Ester [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 103-108.
[4]	DONG Yifan, LIU Zhijia, LAN Tianqing. Effect of Pretreatment Methods on Cellulase Adsorption Profiles of Sugarcane Bagasse [J]. Chemistry and Industry of Forest Products, 2018, 38(2): 75-79.
[5]	LI Jiaoyang, HUANG Jizhen, LIU Yuxin, SUN Bing, LIANG Xing, ZHANG Bao. Effect of Laccase Pretreatment on Extract of Bagasse Hemicellulose [J]. Chemistry and Industry of Forest Products, 2018, 38(1): 121-126.
[6]	ZHOU Jing, SHEN Kuizhong, FANG Guigan, LIANG Long, TIAN Qingwen, LI Man. Effects of Different Pretreatment Methods on Chemical Composition and Enzymatic Hydrolysis of Wheat Straw [J]. Chemistry and Industry of Forest Products, 2017, 37(5): 53-60.
[7]	HE Shicheng, SUN Manyu, SUN Zhongyan, SHU Yueli, JIA Shiru, ZHONG Cheng. The Effect of Integrated Processes of Steam Explosion and Alkaline Pretreatment on the Structure of Wheat Straw and Its Enzymatic Hydrolysis [J]. Chemistry and Industry of Forest Products, 2017, 37(5): 126-132.
[8]	LI Shiwei, YANG Jingling, LI Hui, TAN Mengjiao, HUANG Zhongliang, LI Changzhu. Effect of Hydrothermal Pretreatment on Pelletization of Cinnamomum camphora (L.) Presl [J]. Chemistry and Industry of Forest Products, 2017, 37(4): 129-136.
[9]	WU Boshi, ZHANG Xun, YANG Jun, XU Feng. Dissolution Mechanism of Lignin in Chinese-fir Cell Walls During Chlorite Pretreatment [J]. Chemistry and Industry of Forest Products, 2017, 37(3): 38-44.
[10]	ZHU Jinghang, LI Xinping, WANG Zhuan, DU Min, CHEN Lihong. Effects of Enzymatic Hydrolysis on Cell Wall Structure of Masson Pine and Preparation of Microfibrillated Cellulose [J]. Chemistry and Industry of Forest Products, 2017, 37(3): 82-88.
[11]	YAN Xinyan, RAO Xiaoping, SONG Zhanqian, SHANG Shibin. Synthesis and Properties of Polymerized Terpene Maleic Anhydride Polyethelene Glycol Ester Polymer Surfactants [J]. Chemistry and Industry of Forest Products, 2017, 37(2): 129-134.
[12]	PAN Cheng, LIU Zhong, HUI Lan-feng. Effect of Steam Explosion and Ethanol Pulping Pretreatment on Structure of Wheat Straw [J]. Chemistry and Industry of Forest Products, 2016, 36(6): 76-80.
[13]	LAI Chen-huan, YANG Lei, GAO Zi-qi, YU Shi-yuan, YONG Qiang. Evaluation of the Factors Contributing to Declining Enzymatic Hydrolysis Rates of Steam Pretreated Corn Stover [J]. Chemistry and Industry of Forest Products, 2016, 36(4): 7-13.
[14]	ZHANG Zhong-tao, WANG Wen-liang, GENG Jing, CHANG Jian-min. Pyrolysis Characteristics, Kinetics and Product Components of Extracted Salix cheilophila Schneid. [J]. Chemistry and Industry of Forest Products, 2016, 36(3): 107-113.
[15]	ZHU Yuan-yuan, YANG Jin-long, ZHU Jun-jun, ZHANG Lu, XU Yong, YONG Qiang, YU Shi-yuan. Ethanol Production from Dilute Sulfuric Acid-calciumHydroxide Co-pretreated Corn Stover [J]. Chemistry and Industry of Forest Products, 2015, 35(6): 89-95.

Effect of Ethylene Glycol/Ethylene Carbonate Pretreatment on Components and Structure of Coconut Fiber

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments