PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH

JIANG Wenbo; QIAO Xiuying; TANG Zhongzhu; SUN Kang

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PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH

Research Article | 更新时间：2021-03-19

- PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH
- Acta Polymerica Sinica Issue 1, Pages: 97-101(2006)
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- Published：20 February 2006，
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JIANG Wenbo, QIAO Xiuying, TANG Zhongzhu, SUN Kang. PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH. [J]. Acta Polymerica Sinica (1):97-101(2006)
DOI：

JIANG Wenbo, QIAO Xiuying, TANG Zhongzhu, SUN Kang. PREPARATION AND PROPERTIES OF THERMOPLASTIC ACETYLATED STARCH. [J]. Acta Polymerica Sinica (1):97-101(2006) DOI：

摘要

以乙酰化改性淀粉为基体

甘油为增塑剂

利用哈克旋转流变仪密炼制备热塑性乙酰化淀粉.实验结果表明制备热塑性乙酰化淀粉的甘油/乙酰化淀粉配比应大于30/100(W/W)

且随甘油含量增加

热塑性乙酰化淀粉的脆性降低.动态机械热分析(DMTA)显示热塑性乙酰化淀粉包含富甘油和富淀粉两相

乙酰化淀粉和甘油为部分互溶.流变学分析显示淀粉分子间作用力非常强

表现为类固态行为.同时本文对材料的热稳定性进行了初步研究.

Abstract

Thermoplastic acetylated starch(TPAS)was prepared with acetylatad starch as matrix and glycerol as plasticizer by Haake Rheomix．Experimental results showed that the weight ratio of glycerol／acetylated starch should exceed 30/100 for obtaining TPAS

and the brittleness of TPAS decreased with increasing glycerol content．Dynamic mechanical thermal analysis(DMTA)indicated that acetylated starch and glycerol were partially miscible with separated aeetylated．starch—rich phase and glycerol—rich phase．The rheological properties of TPAS exhibited solid—like behavior．indicating the strong interaction among the acetylated starch molecules．In addition

the thermal stability of TPAS was also investigated in this paper．

关键词

热塑性乙酰化淀粉DMTA流变性能

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