RING-OPENING POLYMERIZAION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE INITIATED BY IN SITU GENERATED, TETRAHYDROSALEN STABLIZED YTTRIUM BOROHYDRIDE COMPLEX AND RANDOM COPOLYMERIZATION WITH e-CAPROLACTONE

Jing Huang; Jian-fang Yu; Han-jian Yu; Wei-lin Sun; Zhi-quan Shen

doi:10.1007/s10118-011-1044-8

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RING-OPENING POLYMERIZAION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE INITIATED BY IN SITU GENERATED, TETRAHYDROSALEN STABLIZED YTTRIUM BOROHYDRIDE COMPLEX AND RANDOM COPOLYMERIZATION WITH e-CAPROLACTONE

Paper | Updated：2021-06-21

- RING-OPENING POLYMERIZAION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE INITIATED BY IN SITU GENERATED, TETRAHYDROSALEN STABLIZED YTTRIUM BOROHYDRIDE COMPLEX AND RANDOM COPOLYMERIZATION WITH e-CAPROLACTONE
- Chinese Journal of Polymer Science Vol. 29, Issue 3, Pages: 390-396(2011)
- Affiliations：
  
  Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of EducationDepartment of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **Wei-lin Sun (孙维林), E-mail: opl_sunwl@emb.zju.edu.cn
- Funds：
- DOI：10.1007/s10118-011-1044-8
  CLC：
- Received：28 April 2010，
  
  Revised：2010-05-25，
  
  Accepted：09 June 2010，
  
  Published：2011
- Accepted：
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Jing Huang, Jian-fang Yu, Han-jian Yu, et al. RING-OPENING POLYMERIZAION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE INITIATED BY IN SITU GENERATED, TETRAHYDROSALEN STABLIZED YTTRIUM BOROHYDRIDE COMPLEX AND RANDOM COPOLYMERIZATION WITH e-CAPROLACTONE[J]. Chinese Journal of Polymer Science, 2011, 29(3): 390-396.
DOI：

Jing Huang, Jian-fang Yu, Han-jian Yu, et al. RING-OPENING POLYMERIZAION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE INITIATED BY IN SITU GENERATED, TETRAHYDROSALEN STABLIZED YTTRIUM BOROHYDRIDE COMPLEX AND RANDOM COPOLYMERIZATION WITH e-CAPROLACTONE[J]. Chinese Journal of Polymer Science, 2011, 29(3): 390-396. DOI： 10.1007/s10118-011-1044-8.

摘要

Abstract

The poly(2

2-dimethyltrimethylene carbonate) (PDTC) with one hydroxyl and one formate terminal functions was synthesized by

in situ

generated

tetrahydrosalen stabilized yttrium borohydride complex. The influences of monomer/initiator molar ratio

temperature and reaction time on polymerization of DTC were investigated. Under the condition: [DTC]/[I]

= 500

55℃

toluene: 0.5 mL

DTC: 0.6 g

PDTC with

= 15600 and PDI = 2.15 was obtained. Through

H-NMR and

C-NMR analyses

the structure of PDTC was characterized and a coordination-insertion mechanism was proposed. In addition

the random copolymerization of DTC and caprolactone (CL) initiated by rare-earth borohydride compound was studied. The microstructure of PDTC-

-PCL includes four diads: DTC-CL

CL-CL

DTC-DTC and CL-DTC

which were determined by the specific signals in

H-NMR spectra. Based on the typical signals of the formate (

= 8.08) and hydroxyl (

= 3.34) end groups of PDTC-

-PCL

a mechanism involving DTC monomer inserts before CL during the initiation process was presumed. Furthermore

the thermal properties of amorphous copolymer were characterized by differential scanning calorimetry (DSC). The results support the random structure of PDTC-

-PCL.

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