Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (8): 82-86.doi: 10.3969/j.issn.1000-565X.2011.08.015

• Chemistry,Chemical & Energy Engineering • Previous Articles     Next Articles

Investigation into Physicochemical Properties of Xylan Derivatives with High Degree of Substitution

Peng Xin-wen1  Ren Jun-li1  Sun Run-cang1,2   

  1. 1. State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. Institute of Biomass Chemistry and Technology,Beijing Forestry University,Beijing 100083,China
  • Received:2010-12-06 Revised:2011-04-18 Online:2011-08-25 Published:2011-07-06
  • Contact: 任俊莉(1978-)，女，副研究员，主要从事植物资源化学研究．E-mail: renjunli@scut．edu．cn E-mail:wenwenpeng1229@163.com
  • About author:彭新文(1982-) ，女，博士生，主要从事植物资源化学研究．
  • Supported by:

    国家“973”计划项目( 2010CB732201 /4) ; 国家自然科学基金资助项目( 31070530) ; 广东省教育厅学科建设专项资金资助项目( N9100230) ; 华南理工大学基本科研业务费( 2009ZM0153)

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Abstract:

Bifunctional xylan derivatives ( XDs) with high degree of substitution were prepared from native xylan in wheat straw,with acrylamide as the etherifying agent,alkali as the catalyst,and butanol /water mixture as the reaction system. Then,the structure of the products was characterized by means of 13C NMR. Moreover,the dynamic rheological behaviors and thermal stability of XDs and the native xylan were tested by using a parallel-plate rheometer
and a simultaneous thermal analyzer, respectively. The results show that,as compared with the native xylan,the shear-thinning phenomenon of XDs solution is significant,with relatively lower viscosity,storage modulus and loss modulus,that the storage modulus is higher than the loss modulus,and that the thermal stability of the xylan declines after the modification.

Key words: xylan, derivative, bifunctional groups, butanol, rheological property

CLC Number: