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Influence of Modification Conditions for Attapulgite on Properties of Modified Attapulgite-Konjac Glucomannan Composites

HU Sheng1,2,3, YANG Mei4, ZHOU Hongyan2, YANG Yan2, TIAN Dating1,2, ZHANG Shenghui1,2   

  1. 1. Key Laboratory of Biological Resources Protection and Utilization of Hubei Province, Hubei University for Nationalities,
    Enshi 445000, China; 2. School of Chemical and Environment Engineering, Hubei University for Nationalities, Enshi 445000, China;
    3. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology,
    Wuhan 430070, China; 4. Engineering Research Center of Nano-Geomaterials of Ministry of Education,
    China University of Geosciences, Wuhan 430074, China
  • Online:2015-11-15 Published:2015-12-03

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Abstract:

Attapulgite (AT) modified with KH-570 was dispersed into konjac glucomannan (KGM) matrix to obtain
modified AT-KGM composites through a blending method. Effects of modified attapulgite amount, modifying agent KH-570
amount, modification time and modification temperature on the properties of composites were investigated. The mechanical
properties of the modified AT-KGM composites were noticeably improved by combining modified AT with KGM and
optimized by incorporating 6% (by weight) of the attapulgite modified with 2% (by weight) KH-570 at 60 ℃ for 35 min to
KGM. KGM composites with native or modified AT were characterized by Fourier transform infrared (FT-IR) spectroscopy
and scanning electron microscopy (SEM). The results indicated that the FT-IR characteristic peaks of the modified AT-KGM
composite was observed, and the mechanical performance of composites was improved due to the strong interaction between
konjac glucomannan and modified attapulgite.

Key words: konjac glucomannan, attapulgite, modification, composites

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