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首页> 外文期刊>Journal of Applied Polymer Science >Formamide as the plasticizer for thermoplastic starch
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Formamide as the plasticizer for thermoplastic starch

机译：甲酰胺作为热塑性淀粉的增塑剂

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As a novel plasticizer, formamide was tested in thermoplastic starch (TPS), in which native cornstarch granules were proved to transfer to a continuous phase by scanning electron microscope (SEM) and the hydrogen bond interaction between plasticizer and starch was proved by Fourier transform infrared (FTIR) spectroscopy. Mechanical tests showed that tensile strength and Young's modulus of forma mide-plasticized TPS (FPTPS) were lower than glycerol-plasticized TPS (GPTPS) and elongation at break and energy break were higher. The effect of formamide and glycerol on the retrogradation of TPS was studied using X-ray diffractometry. Formamide could effectively restrain the starch retrogradation at three different relative humidity (RH) environments, because it could form the more stable hydrogen bonds with the starch hydroxy group than glycerol. From these results, we found that the elongation at break, energy break, and the retrogradation of TPS were ameliorated by formamide. (C) 2004 Wiley Periodicals, Inc.
机译：作为一种新型的增塑剂，在热塑性淀粉（TPS）中测试了甲酰胺，其中通过扫描电子显微镜（SEM）证明了天然玉米淀粉颗粒可以转移到连续相中，并且通过傅立叶变换红外光谱证明了增塑剂与淀粉之间的氢键相互作用（FTIR）光谱。力学测试表明，甲醛中塑TPS（FPTPS）的拉伸强度和杨氏模量低于甘油塑化TPS（GPTPS），断裂伸长率和能量断裂率更高。使用X射线衍射仪研究了甲酰胺和甘油对TPS降解的影响。甲酰胺可以在三种不同的相对湿度（RH）环境下有效地抑制淀粉的凝结，因为它可以与淀粉羟基形成比甘油更稳定的氢键。从这些结果，我们发现甲酰胺改善了断裂伸长率，能量断裂和TPS的回生。 （C）2004年Wiley Periodicals，Inc.

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