| （3-羟基丁酸酯）-（4-羟基丁酸酯）共聚物的物理性能 |
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| 引用本文： | 张素蕴,丛川波,徐日炜,余鼎声.（3-羟基丁酸酯）-（4-羟基丁酸酯）共聚物的物理性能[J].北京化工大学学报(自然科学版),2007,34(Z2):57-60. |
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| 作者姓名： | 张素蕴 丛川波 徐日炜 余鼎声 |
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| 作者单位： | 北京化工大学 1 材料科学与工程学院;
2 新型高分子制备与加工北京市重点实验室，北京 100029) |
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| 基金项目： | 国家自然科学基金
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北京市教委重点学科建设项目 |
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| 摘 要： | 用差示扫描量热仪（DSC）、热失重分析仪(TGA)、偏光显微镜和拉力实验机表征了(3-羟基丁酸酯)-(4-羟基丁酸酯)共聚物［poly（3HB-co-4HB）］的热性能和力学性能，考察了4-羟基丁酸酯（4HB）不同含量的poly(3HB-co-4HB)的热稳定性和力学性能的影响。结果表明，poly(3HB-co-4HB)共聚物有多个熔点，并随4HB含量的增加而降低，共聚酯的热稳定性几乎不受4HB含量的影响，共聚酯的屈服强度、拉伸强度和杨氏模量均随4HB含量的增大而下降。
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| 关 键 词： | 3-羟基丁酸酯 4-羟基丁酸酯 共聚物 热性能 力学性能 羟基丁酸酯 共聚物 物理性能 copolymers Research 杨氏模量 拉伸强度 共聚酯 熔点 结果 影响 热稳定性 含量 考察 力学性能 热性能 表征 实验机 拉力 偏光显微镜 |
| 修稿时间： | 2007年4月2日 |
Research of poly (3-hydroxybutyrate-co-4-hydroxybutyrate)copolymers's physical properties |
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| ZHANG SuYun,CONG ChuanBo,XU RiWei,YU DingSheng.Research of poly (3-hydroxybutyrate-co-4-hydroxybutyrate)copolymers''''s physical properties[J].Journal of Beijing University of Chemical Technology,2007,34(Z2):57-60. |
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| Authors: | ZHANG SuYun CONG ChuanBo XU RiWei YU DingSheng |
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| Institution: | 1. College of Materials Science and Technology;
2. Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A series of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) copolymers poly(3HB-co-4HB)s] with the 4HB content from about 10 to 35 mol% were investigated, and the relationship between 4HB content and poly(3HB-co-4HB)s' thermal,crystal,mechanical properties was studied.Their thermal,crystal and mechanicalproperties were characterized by DSC,TGA,polarized light microscope and tensile test,It was found that the melt temperatures(Tm),glass transition temperatures(Tg) of all the poly(3HB-co-4HB) copolymers investigated decreased continuously with increasing the amount of 4HB;The thermal stability of the Poly(3HB-co-4HB) copolymers slightly improved with increasing 4HB contents;the yield stress and breaking stress nearly decreased with the increase of 4HB contents while the elongation at the yield and breaking point increased. |
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| Keywords: | 3-hydroxybutyrate 4-hydroxybutyrate copolymer thermal properties mechanical properties |
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