| DSC Study of Thermal Properties of Biodegradable Poly （Butylene Succinate-co-terephthalate） |
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| 引用本文： | 李发学,尹灵芝,俞建勇.DSC Study of Thermal Properties of Biodegradable Poly （Butylene Succinate-co-terephthalate）[J].东华大学学报(英文版),2006,23(3):5-7. |
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| 作者姓名： | 李发学 尹灵芝 俞建勇 |
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| 作者单位： | College of Textiles, Donghua University, Shanghai 201620 |
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| 基金项目： | Supported by Shanghai Municipal Science and Technology Development Fund （No. 045211052） |
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| 摘 要： | Poly （ butylene succinate ） （ PBS ）, poly （ butylene terephthalate） （PBT） and poly （butylene succirmte-coterephthalate） （PBST）s were synthesized from dimethyl succinate and/or dimethyl terephthalate reacting with 1,4- butanediol through a process of transesterification/ polycondmsation in the presence of a high effective catalyst and characterized by means of GPC and DSC. The investigation was mainly focused on the influence of content of terephthalate units on the molecular weight and thermal properties of resulting polymers. It is revealed that the melting temperature and crystallinity of synthesized polymers decrease first with the increase of terephthalate units, then shift to rise gradually by DSC measurements. The results of Flory equation suggest sequence structure of PBSTs is random.
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| 关 键 词： | 聚乙烯 PBST 平均分子量 熔化温度 结晶度 |
| 收稿时间： | 2005-01-04 |
DSC Study of Thermal Properties of Biodegradable Poly(Butylene Succinate-Co-terephthalate) |
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| LI Fa-xue,YIN Ling-zhi,YU Jian-yong.DSC Study of Thermal Properties of Biodegradable Poly(Butylene Succinate-Co-terephthalate)[J].Journal of Donghua University,2006,23(3):5-7. |
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| Authors: | LI Fa-xue YIN Ling-zhi YU Jian-yong |
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| Abstract: | Poly(butylene succinate) (PBS),poly(butylene terephthalate) (PBT) and poly(butylene succinate-co-terephthalate) (PBST)s were synthesized from dimethyl succinate and/or dimethyl terephthalate reacting with 1,4-butanediol through a process of transesterification/polycondensation in the presence of a high effective catalyst and characterized by means of GPC and DSC. The investigation was mainly focused on the influence of content of terephthalate units on the molecular weight and thermal properties of resulting polymers. It is revealed that the melting temperature and crystallinity of synthesized polymers decrease first with the increase of terephthalate units, then shift to rise gradually by DSC measurements. The results of Flory equation suggest sequence structure of PBSTs is random. |
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| Keywords: | poly ( butylene succinate-co-terephthalate)(PBST) average molecular weight melting temperature crystallinity |
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