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Microstructure and Properties of Woodceramics Prepared from Lignin-modified Phenol-formaldehyde Resin

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Journal of Wuhan University of Technology(Materials Science) 2012年第6期27卷 1077-1080页

作者：靳艳巧 ZHANG Yizhuan ZHAO Xiaoxiao cheng xiansu College of Materials Science and Engineering Fuzhou University

Novel woodceramics were successfully fabricated by enzymatic hydrolysis lignin （EHL） modified phenol-formaldehyde resin and woodpowders. The microstructure of woodceramics was investigated by FT-IR, X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The effects of EHL-modified PF resin on the properties of woodceramics, such as the weight loss ratio, volume shrinkage ratio, open porosity, bending strength and compressive strength, were studied. The experimental results showed that EHL modified woodceramics had a uniform porous structure. EHL-modified PF resin played an important role in the properties of woodceramics. With the increase of EHL-modified PF resin content, the open porosity, weight loss ratio and volume shrinkage ratio of woodceramics increased, but the bending strength and compressive strength decreased.

关键词： biopolymers composites woodceramics porous materials renewable resources

Preparation of Bio-polyols by Liquefaction of Hardwood Residue and Their Application in the Modification of Polyurethane Foams

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Journal of Wuhan University of Technology(Materials Science) 2016年第4期31卷 918-924页

作者：鹿现哲 WANG Yingchun ZHANG Yizhuan cheng xiansu 于岩靳艳巧 College of Materials Science and Engineering Fuzhou University Key Laboratory of Ecomaterials Advanced Technology(Fuzhou University)

Hardwood residue（HR）,a byproduct of paper industry,was liquefied by using polyethylene glycol 400（PEG400） and ethylene carbonate（EC） as the liquefaction solvents,and concentrated sulfuric acid as the catalyst to produce bio-polyols（HRLP）,which were used to synthesize polyurethane（PU） *** effects of conditions on the properties of HRLP and modified PU foams were investigated and the mechanism of biomass liquefaction was *** optimum conditions of liquefaction were obtained as follows： reaction temperature of 160 °C,reaction time of 60 min,ratio of PEG400/EC of 8：2（w/w）,and ratio of liquid/solid of 5：1（w/w）.The characterization of HRLP modified PU foams suggested that HRLP could partially replace the petroleum polyols to synthesize PU *** the increase of the replacement percentage of HRLP,the apparent density and compressive strength of the foams increased firstly,and then ***,the thermal stability was improved slightly.

关键词： Residue polyurethane glycol synthesize polyethylene lignin hydroxyl Modification compressive slightly

Optimisation of Bio-polyol Production from Cassava Residue Using Ethylene Glycol as the Liquefaction Reagent

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Journal of Wuhan University of Technology(Materials Science) 2019年第4期34卷 945-949页

作者： KANG Jiaqing JIN Yanqiao Key Laboratory of Eco-materials Advanced Technology College of Materials Science and Engineering Fuzhou University

Cassava residue was liquefied by using ethylene glycol(EG), ethylene carbonate, propylene carbonate and polyethylene glycol(molecular weight: 400 g/mol) as the liquefaction reagent respectively at the temperature of 130-170 ℃ with sulfuric acid as the catalyst. The influences of liquefaction parameters, such as the type of liquefaction reagents, mass ratio of EG/cassava residue, liquefaction temperature and time on the properties of the products were discussed. The optimum liquefaction conditions were obtained when the mass ratio of EG/cassava residue was 6:1(w/w), the liquefaction temperature was 150 ℃, the liquefaction time was3 h and the mass fraction of concentrated sulfuric acid/EG was 2.5 wt%. The hydroxyl numbers and residue content of the liquefied products at optimal conditions were 1 137 mgKOH/g and 0.43%, respectively. FT-IR spectrum showed that the liquefaction product of cassava residue was polyether polyol and could be used to prepare polyurethane material or alkyd resins.

关键词： cassava residue liquefaction bio-polyol ethylene glycol

Research on Enzymatic Hydrolysis Lignin Modified Petroleum Asphalt

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Research on Enzymatic Hydrolysis Lignin Modified Petroleum A...

The 1st International Congress on Advanced Materials 2011

作者： Zhidong Zhao Yanqiao Jin Yao Xie xiansu cheng Mingyang Xu College of Materials Science and Engineering Fuzhou University

In this paper,a series of enzymatic hydrolysis lignin modified petroleum asphalts were *** physical properties such as softening point,ductility at low temperature and penetration of the modified asphalt were *** penetration index of asphalt modified with EHL was higher than that of unmodified asphalt,equivalent softening point increased and equivalent brittle point decreased with the increase of EHL amount,which showed that the addition of EHL was favorable to reduce the temperature susceptivity of *** the EHL was 4%,the ductility was 39.0 ***,low temperature performance of asphalt could be further improved by adding EHL and a small amount of SBS.

关键词： Enzymatic Hydrolysis Lignin Polymers modified Asphalt Penetration Softening Point Ductility

来源： cnki会议评论

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复合添加剂在优质松香酯生产中的应用研究

林产工业 2000年第5期27卷 16-18,38页

作者：程贤甦关怀民福建师范大学高分子研究所福州350007

采用添加复合添加剂的方法改进松香酯的工业生产。测试结果表明，该产品的色泽比国家标准为浅，在耐热和抗氧化性等方面也有所提高，产品的综合性能达到国际同类产品的水平。

关键词：松香酯复合添加剂产品质量生产方法设备

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γ射线对木质素的辐射效应研究

辐射研究与辐射工艺学报 2008年第5期26卷 275-279页

作者：蔡玉婷程贤甦福州大学材料科学与工程学院福州350002 闽江学院化学与化学工程系福州350011

利用γ射线具有低能耗、洁净、环保等优点,对木质素进行辐射处理,并对辐射后的木质素的分子量及分子量分布和主要结构基团进行分析。实验结果表明,木质素经过γ射线照射后,分子量及分子量分布增大,辐射效应主要以辐射交联为主。辐射前... 详细信息

利用γ射线具有低能耗、洁净、环保等优点,对木质素进行辐射处理,并对辐射后的木质素的分子量及分子量分布和主要结构基团进行分析。实验结果表明,木质素经过γ射线照射后,分子量及分子量分布增大,辐射效应主要以辐射交联为主。辐射前后的木质素的红外光谱相似,表明辐射并没有改变木质素的主要结构基团,并且木质素中的羟基不仅数量增多而且能更稳定存在。由^(13)C-NMR图谱解析可知,碱木质素经过γ射线照射后,主要结构并没有受到破坏。

关键词： γ射线木质素辐射效应

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盐酸掺杂微／纳米结构聚苯胺的制备

石油化工 2008年第1期37卷 85-89页

作者：吕秋丰程贤甦谢琼琳黄美荣李新贵福州大学材料科学与工程学院福建福州350108 同济大学材料科学与工程学院上海200092

以盐酸为掺杂剂,采用无模板化学氧化聚合法,制备了高聚合回收产率(90%)的微/纳米结构导电聚苯胺。通过场发射扣描电子显微镜、透射电子显微镜、傅里叶变换红外光谱、紫外-可见光谱和四探针技术对聚苯胺的形貌、结构和性能进行了表征。... 详细信息

以盐酸为掺杂剂,采用无模板化学氧化聚合法,制备了高聚合回收产率(90%)的微/纳米结构导电聚苯胺。通过场发射扣描电子显微镜、透射电子显微镜、傅里叶变换红外光谱、紫外-可见光谱和四探针技术对聚苯胺的形貌、结构和性能进行了表征。实验结果表明,苯胺在1.0 mol/L盐酸水溶液中0℃反应24 h(无搅拌),可制得直径为30～43 nm、长度为186～600nm的聚苯胺纳米纤维;当聚合反应时间为72h时,可得到直径为43～57nm、长度为0.86～1.43μm的聚苯胺纳米纤维和外直径为1.2～2.2μm的纳米纤维自组装聚苯胺微球。盐酸掺杂微/纳米结构聚苯胺的导电性良好,室温电导率可达5.0 S/cm,且在不同溶剂中表现出明显的溶致变色性能。

关键词：聚苯胺盐酸无模板化学氧化聚合微/纳米结构自组装

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催化剂在木质纤维素液化中应用的研究进展

高分子材料科学与工程 2017年第3期33卷 174-179页

作者：王莹春曾超敏鹿现哲程贤甦靳艳巧福州大学材料科学与工程学院福建福州350116

木质纤维素是最丰富的可再生资源之一,具有低污染,广泛分布等优点,在化石资源日益枯竭的背景下,将其转化为高附加值化学品,为工业原料和能源油料提供可替代的资源是当前研究的一个热点,具有广阔的发展前景。文中详细综述了近年来国内外... 详细信息

木质纤维素是最丰富的可再生资源之一,具有低污染,广泛分布等优点,在化石资源日益枯竭的背景下,将其转化为高附加值化学品,为工业原料和能源油料提供可替代的资源是当前研究的一个热点,具有广阔的发展前景。文中详细综述了近年来国内外在木质纤维素液化中使用的催化剂类型、作用和研究进展,主要介绍了以浓硫酸为代表的液体无机酸,以NaOH为代表的固体无机碱,以草酸为代表的有机酸,以AlCl_3为代表的盐类和以Cl-/Fe_2O_3为代表的固体杂多酸;同时,分析、对比了不同类型催化剂的优点和缺点,预测了未来木质纤维素液化催化剂的发展趋势和前景。

关键词：木质纤维素液化催化剂可再生资源

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ABS/木质素复合材料的性能研究

化学工程与装备 2010年第9期 6-9页

作者：方润程贤甦福州大学材料科学与工程学院闽江学院化学化工系

采用熔融共混的方法分别制备了ABS/酶解木质素以及ABS/氯化改性酶解木质素复合材料,研究了酶解木质素及氯化改性酶解木质素用量对复合材料力学性能和热性能的影响,利用扫描电镜对复合材料相容性进行了分析。结果表明,随着酶解木质素用... 详细信息

采用熔融共混的方法分别制备了ABS/酶解木质素以及ABS/氯化改性酶解木质素复合材料,研究了酶解木质素及氯化改性酶解木质素用量对复合材料力学性能和热性能的影响,利用扫描电镜对复合材料相容性进行了分析。结果表明,随着酶解木质素用量的增大,ABS/酶解木质素复合材料的拉伸强度有所降低,冲击强度下降则十分明显。而经过改性处理的氯化改性酶解木质素与ABS间的相容性得到显著改善,有效地提高了复合材料的力学性能。另外,酶解木质素和氯化改性酶解木质素的添加均可提高ABS树脂的热稳定性和成炭量。

关键词： ABS 酶解木质素氯化改性酶解木质素力学性能热性能