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篇目详细内容 |
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【篇名】 |
Direct melting polycondensation and characterization of poly(ε-caprolactone-co-lactic acid) |
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【刊名】 |
Frontiers of Chemistry in China |
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【刊名缩写】 |
Front. Chem. China |
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【ISSN】 |
1673-3495 |
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【EISSN】 |
1673-3614 |
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【DOI】 |
10.1007/s11458-007-0036-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
2
卷2期 |
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【页码】 |
178-182
页,共
5
页 |
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【作者】 |
ZHAO Yaoming;
ZHOU Ling;
WANG Zhaoyang;
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【关键词】 |
poly(ε-caprolactone-co-lactic acid); direct melting polycondensation; biodegradability |
【摘要】 |
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A kind of biodegradable material, poly(ε-caprolactone-co-lactic acid) [P(CL-co-LA)] was synthesized via the direct melting polycondensation of lactic acid (LA) and ε-caprolactone (CL). The influences of the polycondensation time, and the catalyst type on the intrinsic viscosity of P(CL-co-LA) were also investigated. The results indicate that P(CL-co-dl-LA), with an intrinsic viscosity of 0.4733 dL/g, can be prepared by direct melting polycondensation with the molar ratio LA/CL = 3:7 at 180°C and 70 Pa for 12 h, using 0.5% (mass fraction) of SnCl2 as the catalyst. Compared with lactide ring-opening polycondensation (ROP), the direct melting polycondensation of LA and CL is more practicable and simple. |
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