| Synthesis,Characterization and Application of Methyl 3,5-Disulfo-benzoate Dipotassium Dihydrate as Nucleating Agent for Poly（L-lactide） |
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| 作者姓名： | SUN Zhiqiang ZHANG Han PANG Xuan BIAN Xinchao CHEN Wenqi CHEN Xuesi |
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| 作者单位： | Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, P.R.China |
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| 基金项目： | Supported by the National Natural Science Foundation of China（Nos.51203155,51173183,21004061,51021003） and the National High Technology Recearch Development Program of China（No.2011AA02A202）. |
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| 摘 要： | A newly synthesized aromatic sulfonate compound,complex 2 with formula of K2H3COOC-C6H3（SO3）2]·2H2O（methyl 3,5-disulfo-benzoate dipotassium dihydrate） was synthesized and characterized by elemental analysis,infrared（IR） spectrometry,nuclear magnetic resonance（NMR） and crystal structure measurement.Single-crystal X-ray diffraction（XRD） revealed that complex 2 crystallized in the triclinic system with space group P（i）.Complex 2 was used as nucleating agent for poly（L-lactide）（PLLA）.The crystallization of PLLA with powder of complex 2 was investigated by means of differential scanning calorimetry（DSC） and polarized optical microscopy （POM）.The results prove that complex 2 was effective as nucleating agent for PLLA.It could accelerate crystallization by reducing the induction time and increasing the density of nuclei in the crystallization process.The half-time of crystallization（t0.5） for pure PLLA was about 8 times longer than that of PLLA sample with 1.0％（mass fraction） of complex 2.
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| 关 键 词： | 二水合物 苯甲酸酯 成核剂 合成 L-乳酸 磺基 单晶X-射线衍射 差示扫描量热法 |
| 收稿时间： | 2013-07-01 |
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