高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (8): 1662.

• 研究论文 • 上一篇    下一篇

新型热塑性淀粉的制备和性能

张坤玉1,2, 冉祥海1,2, 吴航1,2, 姚斌1, 韩常玉1, 张会良1, 庄宇钢1, 董丽松1   

  1. 1. 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室, 长春 130022;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2008-12-15 出版日期:2009-08-10 发布日期:2009-08-10
  • 通讯作者: 董丽松, 男, 研究员, 博士生导师, 主要从事生物降解高分子材料的研究. E-mail: dongls@ciac.jl.cn
  • 基金资助:

    中国科学院方向性项目(批准号: KTCX-YW-208)资助.

Preparation and Characterization of a Novel Thermoplastic Starch Using Dimethyl Sulfoxide as the Plasticizer

ZHANG Kun-Yu1,2, RAN Xiang-Hai1,2, WU Hang1,2, YAO Bin1, HAN Chang-Yu1, ZHANG Hui-Liang1, ZHUANG Yu-Gang1, DONG Li-Song1*   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, China;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-12-15 Online:2009-08-10 Published:2009-08-10
  • Contact: DONG Li-Song. E-mail: dongls@ciac.jl.cn
  • Supported by:

    中国科学院方向性项目(批准号: KTCX-YW-208)资助.

摘要:

以二甲基亚砜(DMSO)为增塑剂, 通过熔融共混法制备了一种新型热塑性淀粉(TPS), 研究不同增塑剂含量对材料结构和性能的影响, 并与甘油及甘油/水复合增塑淀粉体系进行了比较. FTIR结果显示, DMSO能够与淀粉产生强烈而稳定的氢键相互作用. WAXD和SEM的研究结果表明, DMSO的加入破坏了淀粉的有序结构, 实现了淀粉的塑化, 形成均一的非晶连续相. 同甘油及甘油/水增塑体系相比, DMSO与淀粉的羟基形成更为稳定的氢键, 能够有效抑制淀粉的重结晶. 动态力学和拉伸力学性能测试结果表明, 经过DMSO的增塑, 有效降低了淀粉的玻璃化转变温度, 改善了材料的韧性, 增塑效率要好于甘油及甘油/水复合增塑体系.

关键词: 热塑性淀粉; 二甲基亚砜; 氢键

Abstract:

A novel thermoplastic starch was prepared by melting processing method using dimethyl sulfoxide(DMSO) as a plasticizer. The effect of the plasticizer was investigated by a combination of FTIR, XRD, SEM, DMA and tensile testing techniques, and was compared with the more conventional plasticizers, glycerol and glycerol/water. FTIR analysis show that DMSO act as a hydrogen bond acceptor and can form stable hydrogen bonds with starch. XRD and SEM results indicate that the crystalline of starch is destructed and the starch granules transferred to a continuous amorphous phase. It was found that the DMSO could more effectively restrain the retrogradation than the plasticizers, glycerol and glycerol/water, due to the stronger hydrogen bonds. The mechanical analysis showed that the effect of the DMSO was better than glycerol and glycerol/water.

Key words: Thermoplastic starch; Dimethyl sulfoxide(DMSO); Hydrogen bond

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