塑料科技2011，Vol.39Issue(6)：55-59,5.
增塑剂对生物降解塑料聚乳酸结晶形态的影响
Effect of Plasticizer on Crystallization Morphology of Biodegradable Poly(lactic acid)
李铭 1焦铁果 1王亚明 1申长雨1
作者信息
- 1. 郑州大学橡塑模具国家工程研究中心,材料成型及模具技术教育部重点实验室,河南,郑州,450002
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摘要
Abstract
Poly(lactic acid) (PLA) blends with Poly(ethylene glycol) (PEG) was prepared by melt blending.The effect of PEG on the crystallization morphology and melting behavior of PLA crystallized in the crystallization temperture (Tc) range of 80-140℃ was studied by DSC and WAXD.The results show that: when Tc is higher than 100 ℃.the degree of crystallization (Xc) of PLA increases with increase of Tc; when Tc is lower than 100 ℃ , the Xc of PLA increases with an increase of PEG.The lattice spacing of PLA decreases with an increase of Tc and the content of PEG as Tc is lower than 110℃ and keeps constant as Tc is higher than 110℃.When the content of PEG is 15％, the Tc has no effect on lattice spacing of PLA and PLA crystallizes in stable α-form.关键词
聚乳酸/聚乙二醇/结晶形态/熔融行为Key words
Poly(lactic acid)/ Poly(ethylene glycol)/ Crystallization morphology/ Melt behavior分类
化学化工引用本文复制引用
李铭,焦铁果,王亚明,申长雨..增塑剂对生物降解塑料聚乳酸结晶形态的影响[J].塑料科技,2011,39(6):55-59,5.
