| 枝状PBS基脂肪族聚酯的合成和降解研究 |
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| 引用本文： | 寇莹,张昌辉.枝状PBS基脂肪族聚酯的合成和降解研究[J].安康学院学报,2012,24(1):91-93. |
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| 作者姓名： | 寇莹 张昌辉 |
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| 作者单位： | 1. 安康学院化学化工系,陕西安康,725000
2. 陕西科技大学化学与化工学院,陕西西安,710021 |
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| 摘 要： | 合成了枝状PBS基脂肪族聚酯——聚丁二酸丁二醇酯-共-聚丁二酸1,2丙二醇酯P(BS-co-1,2-PS),并用土壤培养液法对P(BS-co-1,2-PS)及PBS进行降解,用X射线衍射对材料的结晶度进行了测定,通过失重率的变化和表面形貌观察对降解程度进行表征分析。结果表明,结晶度的变化顺序为PBSP(BS-co-1,2-PS)-10%P(BS-co-1,2-P S)-20%P(BS-co-1,2-P S)-30%,降解性能的变化顺序为P(BS-co-1,2-P S)-30%P(BS-co-1,2-PS)-20%P(BS-co-1,2-PS)-10%PBS,由此得出,随着1,2丙二醇添加量的增大,P(BS-co-1,2-PS)共聚酯主链结构对称性降低,结晶性能减弱,结晶度减小,降解性能增大。
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| 关 键 词： | 枝状PBS基脂肪族聚酯 降解 结晶度 结构 性能 |
Study on the Synthesis and Degradation of Branch Shape PBS-based Polyesters |
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| KOU Ying,ZHANG Changhui.Study on the Synthesis and Degradation of Branch Shape PBS-based Polyesters[J].Journal of Ankang Teachers College,2012,24(1):91-93. |
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| Authors: | KOU Ying ZHANG Changhui |
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| Institution: | 1.Department of Chemistry-Chemical Engineering,Ankang University,Ankang725000,Shaanxi,China; 2.College of Chemistry and Chemical Engineering,Shaanxi University of Science & Technology,Xi’an 710021,Shaanxi,China) |
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| Abstract: | A series of biodegradable Poly(butylene succinate-co-1,2-propanediol succinates)(P(BS-co-1,2-PS)and Poly(butylene succinate)(PBS)was synthesized and degraded under soil suspension.The crystallization of products was characterized by X-ray.The experimental results were characterized by degradation rate and surface morphology.The outcome showed that the crystallization reduced as follows:PBS>P(BS-co-1,2-PS)-10%>P(BS-co-1,2-PS)-20%>P(BS-co-1,2-PS)-30%,the degradation rate decreased as follows:P(BS-co-1,2-PS)-30% >P(BS-co-1,2-PS)-20%>P(BS-co-1,2-PS)-10%>PBS.The sequence of degradation rate change was opposite with the crystallization.The results indicated that the symmetric properties of P(BS-co-1,2-PS)decreased with the addition of 1,2 propanediol.The connection of crystallization behavior and the degradation of polyesters can be included:the degradation increased with the decreased of the crystallization. |
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| Keywords: | branch shape PBS-based polyesters degradation crystallization structure properties |
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