[1] Jiao Zhen, Song Junying, Fan Wenjing, et al. Synthesis of poly(vinyl acetate)oligomersand their phase behavior in supercritical carbon dioxide [J]. Journal of Southeast University (English Edition), 2019, 35 (2): 264-268. [doi:10.3969/j.issn.1003-7985.2019.02.018]

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Synthesis of poly(vinyl acetate)oligomersand their phase behavior in supercritical carbon dioxide()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

35

Issue:

2019 2

Page:

264-268

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2019-06-30

Info

Title:

Synthesis of poly(vinyl acetate)oligomersand their phase behavior in supercritical carbon dioxide

Author(s):

Jiao Zhen¹;  2;  Song Junying¹;  Fan Wenjing¹;  Wang Xiudong¹;  Wang Ziyi¹

¹School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
²Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China

Keywords:

poly(vinyl acetate);  polymerization;  supercritical carbon dioxide;  cloud point pressure;  CO₂-philic polymer

PACS:

O632.1;TQ013.1

DOI:

10.3969/j.issn.1003-7985.2019.02.018

Abstract:

Three poly(vinyl acetate)(PVAc)oligomers with controlled molecular weight and narrow molecular distribution are synthesized by reversible addition-fragmentation chain transfer(RAFT)polymerization. The effects of the reaction temperature and the added amount of initiator of the PVAc polymerization are discussed. In addition, the phase behavior of the prepared PVAc in pressured CO₂ is determined via the cloud point method. The results indicate that the cloud point of PVAc increases with the increase in the molecular weight, the PVAc concentration, and the temperature. The cloud point pressures for the PVAc mass concentration of 0.12 % with the molecular weight of 1 550, 2 120, and 2 960 g/mol are 13.48, 13.83 and 15.43 MPa, respectively, at the temperature of 35 ℃. It reveals that the solubility of PVAc in ScCO₂ at relatively low pressure is remarkably limited.

References:

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Memo

Memo:

Biography: Jiao Zhen(1979—), male, doctor, associate professor, jiaozhen@seu.edu.cn.
Foundation items: The Natural Science Foundation of Jiangsu Province(No.BK20130602), the Applied Basic Research Program of Suzhou(No.SYG201836), the Project of the Collaborative Innovation Center of Suzhou Nano Science and Technology.
Citation: Jiao Zhen, Song Junying, Fan Wenjing, et al.Synthesis of poly(vinyl acetate)oligomers and their phase behavior in supercritical carbon dioxide[J].Journal of Southeast University(English Edition), 2019, 35(2):264-268.DOI:10.3969/j.issn.1003-7985.2019.02.018.

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