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Start Over Author "Chen, Wenqi" Publisher springer science and business media llc
20 results on '"Chen, Wenqi"'

12. Synthesis, characterization and application of methyl 3,5-disulfo-benzoate dipotassium dihydrate as nucleating agent for poly(L-lactide)

Author

Xinchao Bian, Chen Wenqi, Xuesi Chen, Han Zhang, Xuan Pang, and Zhiqiang Sun

Subjects
chemistry.chemical_classification, Materials science, General Chemistry, Polymer, Crystal structure, Triclinic crystal system, law.invention, chemistry.chemical_compound, Sulfonate, Differential scanning calorimetry, chemistry, law, Polymer chemistry, Copolymer, Crystallization, Mass fraction, Nuclear chemistry
Abstract

A newly synthesized aromatic sulfonate compound, complex 2 with formula of K2[H3COOC-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 $$P_{\bar 1}$$ . 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(t 0.5) for pure PLLA was about 8 times longer than that of PLLA sample with 1.0%(mass fraction) of complex 2.

Published
2013

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