Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of L-lactide

Chuang Wan-Jung; Huang Yen-Tzu; Chen Yu-Hsieh; Lin Yu-Shan; Lu Wei-Yi; Lai Yi-Chun; Chiang Michael Y.; Hsu Sodio C. N.; Chen Hsuan-Ying

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Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of L-lactide

机译：酮酮络合物朝向L-丙交酯的开环聚合的合成，表征和催化活性

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Studies of the ring-opening polymerization of L-lactide (LA) using Na complexes with Schiff base ligands as catalysts have revealed high catalytic activity but poor controllability of the polymer molecular weight. In this study, Na complexes bearing ketiminate ligands instead of Schiff base ligands were synthesized and their application in LA polymerization was tested. The polymerization results revealed that the catalytic activity of Na complexes bearing ketiminate ligands was higher than that of Na complexes bearing Schiff base ligands, but the poor controllability of polymer molecular weight was still a drawback. However, the poor controllability could be improved by means of using a high concentration of initiators in the polymerization system at 0 degrees C for 1 min. L-Py-Na revealed the excellent controllability of polymer molecular weight depending on the ratio of [LA]/[initiator] (the molar averages of the number from 4500 to 35 000) with narrow polydispersity indexes, ranging from 1.29 to 1.35.

机译：用辛夫碱配体与辛酸盐碱配合物作为催化剂的Na络合物的开环聚合的研究表明了高催化活性，但聚合物分子量的可控制性差。在该研究中，合成了轴承酮酸盐配体而不是席克碱配体的Na络合物，并测试其在La聚合中的应用。聚合结果表明，轴复合物的催化活性轴承酮亚酸盐配体高于亚络合物的亚络合物轴复合物，但聚合物分子量的可稳定性仍然是缺点。然而，通过在0℃下在0℃下使用聚合体系中的高浓度引发剂可以提高可差的可控性。 L-Py-Na根据[la] / [引发剂]（从4500-35000倍率的摩尔平均值）的比例揭示了聚合物分子量的优异可控性，从1.29〜1.35范围为1.29至1.35。

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《RSC Advances》 |2016年第39期|共8页
作者
Chuang Wan-Jung; Huang Yen-Tzu; Chen Yu-Hsieh; Lin Yu-Shan; Lu Wei-Yi; Lai Yi-Chun; Chiang Michael Y.; Hsu Sodio C. N.; Chen Hsuan-Ying;
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Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

Kaohsiung Med Univ Dept Med &

Appl Chem Kaohsiung 80708 Taiwan;

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中图分类化学;
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1. Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of L-lactide [J] . Chuang Wan-Jung, Huang Yen-Tzu, Chen Yu-Hsieh, RSC Advances . 2016,第39期

机译：酮酮络合物朝向L-丙交酯的开环聚合的合成，表征和催化活性
2. Synthesis, characterization and catalytic activity of lithium and sodium iminophenoxide complexes towards ring-opening polymerization of L-lactide [J] . Lu W.-Y., Hsiao M.-W., Hsu S.C.N., Dalton transactions: An international journal of inorganic chemistry . 2012,第13期

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3. Synthesis, characterization, and catalytic activity of lithium complexes bearing NNO-tridentate Schiff base ligands toward ring-opening polymerization of L-lactide [J] . Lu Wei-Yi, Ou Hsiu-Wei, Lee Chieh-Ning, Polymer: The International Journal for the Science and Technology of Polymers . 2018,第期

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机译：新的钛配合物轴承O，N，N，O-四晶体配体：D，L-丙交酯的开环聚合的合成，表征和催化
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Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of L-lactide

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