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聚乳酸立构复合物的合成与表征 被引量：4

Synthesis and Characterization of Poly(lactic acid) Stereocomplex
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摘要 采用直接熔融缩聚法制备不同分子量特征的聚乳酸预聚物,将分子量相近的PLLA和PDLA预聚物等量混合,经过熔融共混后再进行固相聚合,制备得到聚乳酸立构复合物。结果表明:sc-PLA与两种PLA预聚物相比,熔点提高50℃左右,通过固相聚合PLA的分子量也得到显著提高。该方法工艺简单,产物纯净,是改善聚乳酸耐热性的一种有效途径。 PLA prepolymcrs with different molecular weight were prepared by direct melt polycondensation. Then PLLA and PDLA prepolymers with a similar molecular weight were mixed equally, after melt blending and solid-state polycondensation, the stereocomplex structure of PLA was prepared. The result showed that the melt point of sc-PLA was increased by nearly 50℃ compared with PLLA and PDLA prepolymers, the molecular weight of PLA was increased by solid- state polycondensation. An effective way to improve the heat resistance of PLA was offered.
作者 李菁 陈大凯 任杰
机构地区 同济大学材料科学与工程学院纳米与生物高分子材料研究所 同济大学先进土木工程材料教育部重点实验室
出处 《塑料》 CAS CSCD 北大核心 2011年第3期73-75,共3页 Plastics
基金 上海市优秀学科带头人计划(07XD14029) 上海市国际科技合作基金项目(075207046)
关键词 聚乳酸立构复合物 熔融共混 耐热性 直接缩聚 固相聚合 sc-PLA melt blending heat resistance direct melt polycondensation solid-state polycondensation
分类号 Q946.816 [生物学—植物学]
  • 相关文献

参考文献14

  • 1L T Lim, R Auras, M Rubino. Processing technologies for poly ( lactic acid) [J]. Prog Polym Sci,2008,33:820.
  • 2齐建瑾,任杰.聚乳酸立构复合物的研究现状与进展[J].塑料,2009,38(1):32-34. 被引量：3
  • 3Y Ikada, K Jamshidi, H Tsuji, et al. Stereocomplex formation between enantiomeric poly(Lactides) [ J]. Macromolecules, 1987,20:904.
  • 4H Tsuji. Poly (lactide) stereocomplexes: formation, structure, properties, degradation, and applications [ J ]. Macromol Biosci, 2005 (5) :569.
  • 5D Brizzolara, H J Cantow, K Diederichs, et al. Mechanism of the stereocomplex formation between enantiomeric poly (lactide) s [ J ]. Macromolecules, 1996,29 : 191.
  • 6K Fukushima,Y Furuhashi. A novel synthetic approach to stereo-block poly ( lactic acid) [ J ]. M acromol Symp,2005,224 : 133.
  • 7K Fukushima, Y Furuhashi. Stereocomplexed polylaetides (Neo-PLA) as high-performance bio-based polymers: Their formation, properties, and application [J]. Polym Int,2006,55:626.
  • 8K Fukushima, M Hirata, Y Kimura. Synthesis and characterization of stereoblock poly (lactic acid)s with nonequivalent D/L sequence ratios [J]. Macromolecules,2007,40 : 3 049.
  • 9K Fukushima, Y H Chang, Y Kimura. Enhanced stereocomplex formation of poly ( L-lactic acid ) and poly ( D-lactic acid) in the presence of stereoblock poly (lactic acid) [ J ]. Macromol Biosci, 2007(7) :829.
  • 10H Tsuji, S H Hyon, Y Ikada. Stereocomplex formation between enantiomeric poly ( 1 actic acid) s:3. Calorimetric studies on blend films cast from dilute solution[J]. Macromolecules, 1991,24:5 651.

二级参考文献22

  • 1Yoshito I, Khosrow J, Hideto T,et al. Stereocomplex formation between enantiomefic poly (lactides) [J]. Macromolecules,1987 ,20 :906 -908.
  • 2Hideto T, Fumitaka H, Suong-Hyu H, et al. Stereocomplex formation between enantiomeric poly ( 1 actic acid) s :2. Stereocomplex formation in concentrated solutions [ J ]. Macromolecules, 1991,24 : 2719 - 2724.
  • 3Hideto T,Suong-Hyu H, Yoshito I. Stereocomplex formation between enantiomeric poly ( 1 actic acid) s :3. Calorimetric studies on blend films cast from dilute solution [ J ]. Macromo|ecules, 1991,24:5651 - 5656.
  • 4Hideto T,Suong-Hyu H, Yoshito I. Stereocomplex formation between enantiomeric poly (1 actic acid)s :4. Differential scanning calorimetric studies on precipitates from mixed solutions of poly (D-lactic acid)
  • 5Hideto T, Suong-Hyu H, Yoshito enantiomeric poly (lactic acid)s I. Stereocomplex formation between 5. Calorimetric and morphological studies on the stereocomplex formed in acetonitfile solution [ J ] Macromolecules, 1992,25:2940 - 2946.
  • 6Hideto T, Yoshito I. Stereocomplex formation between enantiomeric poly (lactic acid)s :6. Binary blends from copolymers[ J]. Macromolecules, 1992,25:5719 -5723
  • 7Hideto T,Fumitaka H,Masaru N,et al. Stereocomplex formation between enantiomeric poly (lactic acid)s :7. Phase structure of the stereocomplex crystallized from a dilute acetonitrile solution as studied by high-resolution solid-state ^13C NMR spectroscopy[ J]. Macromolecules, 1992,25: 4114 -4118.
  • 8Hideto T, Yoshito I,Suong-Hyu H, et al. Stereoeomplex formation between enantiomeric poly (lactic acid) :8. Complex fibers spun from mixed solution of poly( D-lactic acid) and poly (L-lactic acid)[J]. Journal of Applied Polymer Science, 1994,51 (2) :337 - 344.
  • 9Hideto T, Yoshito I. Stereocomplex formation between enantiomerie poly ( 1 aerie acid ) s :9. Stereocomplexation from the melt [ J ]. Maeromoleeules, 1993,26:6918 - 6926.
  • 10Hideto T,Yoshito I. Stereocomplex formation between enantiomeric poly ( lactic acid) s : 10. Binary blends from poly (D-lactide-CO-glyeolide) and poly (L-lactide-CO-glycolide) [ J ]. Journal of Applied Polymer Science, 1994,53 ( 8 ) :1061 - 1071.

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2011年 第3期

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