RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS（2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE）

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RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS（2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE）

Note | Updated：2021-06-21

- RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS（2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE）
- Issue 4, Pages: 427-430(2007)
- Affiliations：
  
  1. Institute of Polymer Science,Zhejiang University
  2. 2. Department of Chemisthey,Zhejiang University
- Author bio：
- Funds：
  
  This work was financially supported by the financial support of National Natural Science Foundation of China （No. 20434020）()
- DOI：
  CLC： TQ316.341
- Published：2007
- Accepted：
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[1]沈之荃,郑豪.RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS(2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE)[J].Chinese Journal of Polymer Science,2007(04):427-430.

RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS（2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE）[J]. 2007, (4): 427-430.
[1]沈之荃,郑豪.RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS(2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE)[J].Chinese Journal of Polymer Science,2007(04):427-430. DOI：

RING-OPENING POLYMERIZATION OF l,4-DIOXAN-2-ONE INITIATED BY LANTHANUM TRIS（2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE）[J]. 2007, (4): 427-430. DOI：

摘要

<正>The ring-opening polymerization of 1

4-dioxan-2-one （PDO） was carried out by lanthanum tris（2

6-di-tert-butyl-4-methylphenolate）（La（OAr）3） as novel single component initiator. The influences of polymerization reaction temperature and the molar ratio of monomer to initiator on the monomer conversion and molecular weight of poly（1

4-dioxan-2-one）（PPDO） were explored. PPDO with high viscosity average molecular weight of 1.95×105 can be prepared at 40℃when [PDO]/ [La（OAr）3] molar ratio was 800. Mechanism investigation shows that the polymerization proceeds through a "coordinationinsertion" mechanism with selective rupture of acyl-oxygen bond of PDO.

Abstract

The ring-opening polymerization of 1

4-dioxan-2-one （PDO） was carried out by lanthanum tris（2

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