| A Mixed Plasticizer for the Preparation of Thermoplastic Starch |
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| 作者姓名： | Xiao Fei MA Jiu Gao YU Jin FENG School of Science Tianjin University Tianjin |
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| 作者单位： | Xiao Fei MA，Jiu Gao YU，Jin FENG School of Science，Tianjin University，Tianjin 300072 |
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| 摘 要： | In this paper, formamide was firstly used as plasticizer to prepare thermoplastic starch (TPS), which could suppress the retrogradation of TPS by X-ray diffractometry (XRD) and show a good flexibility, but was weaker than conventional glycerol-plasticized TPS (GPTPS). When urea was introduced into plasticizer, both the retrogradation and mechanical properties were ameliorated. The tensile stress, strain and energy break of TPS plasticized by urea (wt. 20%) and formamide (wt.10%), respectively, reached 4.83 MPa, 104.6 % and 2.17 N-m (Newton-meter) after it had been stored at relative humidity (RH) 30% for one week.
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| 关 键 词： | 热塑性淀粉 混合可塑剂 尿素 退减作用 甲酰胺 |
A Mixed Plasticizer for the Preparation of Thermoplastic Starch |
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| Xiao Fei MA,Jiu Gao YU,Jin FENG School of Science,Tianjin University,Tianjin .A Mixed Plasticizer for the Preparation of Thermoplastic Starch[J].Chinese Chemical Letters,2004,15(6):741-744. |
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| Authors: | Xiao Fei MA Jiu Gao YU Jin FENG School of Science Tianjin University Tianjin |
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| Institution: | Xiao Fei MA,Jiu Gao YU,Jin FENG School of Science,Tianjin University,Tianjin 300072 |
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| Abstract: | In this paper, formamide was firstly used as plasticizer to prepare thermoplastic starch (TPS), which could suppress the retrogradation of TPS by X-ray diffractometry (XRD) and show a good flexibility, but was weaker than conventional glycerol-plasticized TPS (GPTPS). When urea was introduced into plasticizer, both the retrogradation and mechanical properties were ameliorated. The tensile stress, strain and energy break of TPS plasticized by urea (wt. 20%) and formamide (wt.10%), respectively, reached 4.83 MPa, 104.6 % and 2.17 N-m (Newton-meter) after it had been stored at relative humidity (RH) 30% for one week. |
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| Keywords: | Thermoplastic starch formamide urea retrogradation |
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